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2018-06-15docs: fix broken references with multiple hintsMauro Carvalho Chehab
The script: ./scripts/documentation-file-ref-check --fix Gives multiple hints for broken references on some files. Manually use the one that applies for some files. Acked-by: Steven Rostedt (VMware) <rostedt@goodmis.org> Acked-by: James Morris <james.morris@microsoft.com> Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Acked-by: Jonathan Corbet <corbet@lwn.net>
2018-06-12treewide: devm_kzalloc() -> devm_kcalloc()Kees Cook
The devm_kzalloc() function has a 2-factor argument form, devm_kcalloc(). This patch replaces cases of: devm_kzalloc(handle, a * b, gfp) with: devm_kcalloc(handle, a * b, gfp) as well as handling cases of: devm_kzalloc(handle, a * b * c, gfp) with: devm_kzalloc(handle, array3_size(a, b, c), gfp) as it's slightly less ugly than: devm_kcalloc(handle, array_size(a, b), c, gfp) This does, however, attempt to ignore constant size factors like: devm_kzalloc(handle, 4 * 1024, gfp) though any constants defined via macros get caught up in the conversion. Any factors with a sizeof() of "unsigned char", "char", and "u8" were dropped, since they're redundant. Some manual whitespace fixes were needed in this patch, as Coccinelle really liked to write "=devm_kcalloc..." instead of "= devm_kcalloc...". The Coccinelle script used for this was: // Fix redundant parens around sizeof(). @@ expression HANDLE; type TYPE; expression THING, E; @@ ( devm_kzalloc(HANDLE, - (sizeof(TYPE)) * E + sizeof(TYPE) * E , ...) | devm_kzalloc(HANDLE, - (sizeof(THING)) * E + sizeof(THING) * E , ...) ) // Drop single-byte sizes and redundant parens. @@ expression HANDLE; expression COUNT; typedef u8; typedef __u8; @@ ( devm_kzalloc(HANDLE, - sizeof(u8) * (COUNT) + COUNT , ...) | devm_kzalloc(HANDLE, - sizeof(__u8) * (COUNT) + COUNT , ...) | devm_kzalloc(HANDLE, - sizeof(char) * (COUNT) + COUNT , ...) | devm_kzalloc(HANDLE, - sizeof(unsigned char) * (COUNT) + COUNT , ...) | devm_kzalloc(HANDLE, - sizeof(u8) * COUNT + COUNT , ...) | devm_kzalloc(HANDLE, - sizeof(__u8) * COUNT + COUNT , ...) | devm_kzalloc(HANDLE, - sizeof(char) * COUNT + COUNT , ...) | devm_kzalloc(HANDLE, - sizeof(unsigned char) * COUNT + COUNT , ...) ) // 2-factor product with sizeof(type/expression) and identifier or constant. @@ expression HANDLE; type TYPE; expression THING; identifier COUNT_ID; constant COUNT_CONST; @@ ( - devm_kzalloc + devm_kcalloc (HANDLE, - sizeof(TYPE) * (COUNT_ID) + COUNT_ID, sizeof(TYPE) , ...) | - devm_kzalloc + devm_kcalloc (HANDLE, - sizeof(TYPE) * COUNT_ID + COUNT_ID, sizeof(TYPE) , ...) | - devm_kzalloc + devm_kcalloc (HANDLE, - sizeof(TYPE) * (COUNT_CONST) + COUNT_CONST, sizeof(TYPE) , ...) | - devm_kzalloc + devm_kcalloc (HANDLE, - sizeof(TYPE) * COUNT_CONST + COUNT_CONST, sizeof(TYPE) , ...) | - devm_kzalloc + devm_kcalloc (HANDLE, - sizeof(THING) * (COUNT_ID) + COUNT_ID, sizeof(THING) , ...) | - devm_kzalloc + devm_kcalloc (HANDLE, - sizeof(THING) * COUNT_ID + COUNT_ID, sizeof(THING) , ...) | - devm_kzalloc + devm_kcalloc (HANDLE, - sizeof(THING) * (COUNT_CONST) + COUNT_CONST, sizeof(THING) , ...) | - devm_kzalloc + devm_kcalloc (HANDLE, - sizeof(THING) * COUNT_CONST + COUNT_CONST, sizeof(THING) , ...) ) // 2-factor product, only identifiers. @@ expression HANDLE; identifier SIZE, COUNT; @@ - devm_kzalloc + devm_kcalloc (HANDLE, - SIZE * COUNT + COUNT, SIZE , ...) // 3-factor product with 1 sizeof(type) or sizeof(expression), with // redundant parens removed. @@ expression HANDLE; expression THING; identifier STRIDE, COUNT; type TYPE; @@ ( devm_kzalloc(HANDLE, - sizeof(TYPE) * (COUNT) * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | devm_kzalloc(HANDLE, - sizeof(TYPE) * (COUNT) * STRIDE + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | devm_kzalloc(HANDLE, - sizeof(TYPE) * COUNT * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | devm_kzalloc(HANDLE, - sizeof(TYPE) * COUNT * STRIDE + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | devm_kzalloc(HANDLE, - sizeof(THING) * (COUNT) * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) | devm_kzalloc(HANDLE, - sizeof(THING) * (COUNT) * STRIDE + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) | devm_kzalloc(HANDLE, - sizeof(THING) * COUNT * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) | devm_kzalloc(HANDLE, - sizeof(THING) * COUNT * STRIDE + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) ) // 3-factor product with 2 sizeof(variable), with redundant parens removed. @@ expression HANDLE; expression THING1, THING2; identifier COUNT; type TYPE1, TYPE2; @@ ( devm_kzalloc(HANDLE, - sizeof(TYPE1) * sizeof(TYPE2) * COUNT + array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2)) , ...) | devm_kzalloc(HANDLE, - sizeof(TYPE1) * sizeof(THING2) * (COUNT) + array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2)) , ...) | devm_kzalloc(HANDLE, - sizeof(THING1) * sizeof(THING2) * COUNT + array3_size(COUNT, sizeof(THING1), sizeof(THING2)) , ...) | devm_kzalloc(HANDLE, - sizeof(THING1) * sizeof(THING2) * (COUNT) + array3_size(COUNT, sizeof(THING1), sizeof(THING2)) , ...) | devm_kzalloc(HANDLE, - sizeof(TYPE1) * sizeof(THING2) * COUNT + array3_size(COUNT, sizeof(TYPE1), sizeof(THING2)) , ...) | devm_kzalloc(HANDLE, - sizeof(TYPE1) * sizeof(THING2) * (COUNT) + array3_size(COUNT, sizeof(TYPE1), sizeof(THING2)) , ...) ) // 3-factor product, only identifiers, with redundant parens removed. @@ expression HANDLE; identifier STRIDE, SIZE, COUNT; @@ ( devm_kzalloc(HANDLE, - (COUNT) * STRIDE * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) | devm_kzalloc(HANDLE, - COUNT * (STRIDE) * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) | devm_kzalloc(HANDLE, - COUNT * STRIDE * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | devm_kzalloc(HANDLE, - (COUNT) * (STRIDE) * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) | devm_kzalloc(HANDLE, - COUNT * (STRIDE) * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | devm_kzalloc(HANDLE, - (COUNT) * STRIDE * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | devm_kzalloc(HANDLE, - (COUNT) * (STRIDE) * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | devm_kzalloc(HANDLE, - COUNT * STRIDE * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) ) // Any remaining multi-factor products, first at least 3-factor products, // when they're not all constants... @@ expression HANDLE; expression E1, E2, E3; constant C1, C2, C3; @@ ( devm_kzalloc(HANDLE, C1 * C2 * C3, ...) | devm_kzalloc(HANDLE, - (E1) * E2 * E3 + array3_size(E1, E2, E3) , ...) | devm_kzalloc(HANDLE, - (E1) * (E2) * E3 + array3_size(E1, E2, E3) , ...) | devm_kzalloc(HANDLE, - (E1) * (E2) * (E3) + array3_size(E1, E2, E3) , ...) | devm_kzalloc(HANDLE, - E1 * E2 * E3 + array3_size(E1, E2, E3) , ...) ) // And then all remaining 2 factors products when they're not all constants, // keeping sizeof() as the second factor argument. @@ expression HANDLE; expression THING, E1, E2; type TYPE; constant C1, C2, C3; @@ ( devm_kzalloc(HANDLE, sizeof(THING) * C2, ...) | devm_kzalloc(HANDLE, sizeof(TYPE) * C2, ...) | devm_kzalloc(HANDLE, C1 * C2 * C3, ...) | devm_kzalloc(HANDLE, C1 * C2, ...) | - devm_kzalloc + devm_kcalloc (HANDLE, - sizeof(TYPE) * (E2) + E2, sizeof(TYPE) , ...) | - devm_kzalloc + devm_kcalloc (HANDLE, - sizeof(TYPE) * E2 + E2, sizeof(TYPE) , ...) | - devm_kzalloc + devm_kcalloc (HANDLE, - sizeof(THING) * (E2) + E2, sizeof(THING) , ...) | - devm_kzalloc + devm_kcalloc (HANDLE, - sizeof(THING) * E2 + E2, sizeof(THING) , ...) | - devm_kzalloc + devm_kcalloc (HANDLE, - (E1) * E2 + E1, E2 , ...) | - devm_kzalloc + devm_kcalloc (HANDLE, - (E1) * (E2) + E1, E2 , ...) | - devm_kzalloc + devm_kcalloc (HANDLE, - E1 * E2 + E1, E2 , ...) ) Signed-off-by: Kees Cook <keescook@chromium.org>
2018-06-12treewide: kzalloc() -> kcalloc()Kees Cook
The kzalloc() function has a 2-factor argument form, kcalloc(). This patch replaces cases of: kzalloc(a * b, gfp) with: kcalloc(a * b, gfp) as well as handling cases of: kzalloc(a * b * c, gfp) with: kzalloc(array3_size(a, b, c), gfp) as it's slightly less ugly than: kzalloc_array(array_size(a, b), c, gfp) This does, however, attempt to ignore constant size factors like: kzalloc(4 * 1024, gfp) though any constants defined via macros get caught up in the conversion. Any factors with a sizeof() of "unsigned char", "char", and "u8" were dropped, since they're redundant. The Coccinelle script used for this was: // Fix redundant parens around sizeof(). @@ type TYPE; expression THING, E; @@ ( kzalloc( - (sizeof(TYPE)) * E + sizeof(TYPE) * E , ...) | kzalloc( - (sizeof(THING)) * E + sizeof(THING) * E , ...) ) // Drop single-byte sizes and redundant parens. @@ expression COUNT; typedef u8; typedef __u8; @@ ( kzalloc( - sizeof(u8) * (COUNT) + COUNT , ...) | kzalloc( - sizeof(__u8) * (COUNT) + COUNT , ...) | kzalloc( - sizeof(char) * (COUNT) + COUNT , ...) | kzalloc( - sizeof(unsigned char) * (COUNT) + COUNT , ...) | kzalloc( - sizeof(u8) * COUNT + COUNT , ...) | kzalloc( - sizeof(__u8) * COUNT + COUNT , ...) | kzalloc( - sizeof(char) * COUNT + COUNT , ...) | kzalloc( - sizeof(unsigned char) * COUNT + COUNT , ...) ) // 2-factor product with sizeof(type/expression) and identifier or constant. @@ type TYPE; expression THING; identifier COUNT_ID; constant COUNT_CONST; @@ ( - kzalloc + kcalloc ( - sizeof(TYPE) * (COUNT_ID) + COUNT_ID, sizeof(TYPE) , ...) | - kzalloc + kcalloc ( - sizeof(TYPE) * COUNT_ID + COUNT_ID, sizeof(TYPE) , ...) | - kzalloc + kcalloc ( - sizeof(TYPE) * (COUNT_CONST) + COUNT_CONST, sizeof(TYPE) , ...) | - kzalloc + kcalloc ( - sizeof(TYPE) * COUNT_CONST + COUNT_CONST, sizeof(TYPE) , ...) | - kzalloc + kcalloc ( - sizeof(THING) * (COUNT_ID) + COUNT_ID, sizeof(THING) , ...) | - kzalloc + kcalloc ( - sizeof(THING) * COUNT_ID + COUNT_ID, sizeof(THING) , ...) | - kzalloc + kcalloc ( - sizeof(THING) * (COUNT_CONST) + COUNT_CONST, sizeof(THING) , ...) | - kzalloc + kcalloc ( - sizeof(THING) * COUNT_CONST + COUNT_CONST, sizeof(THING) , ...) ) // 2-factor product, only identifiers. @@ identifier SIZE, COUNT; @@ - kzalloc + kcalloc ( - SIZE * COUNT + COUNT, SIZE , ...) // 3-factor product with 1 sizeof(type) or sizeof(expression), with // redundant parens removed. @@ expression THING; identifier STRIDE, COUNT; type TYPE; @@ ( kzalloc( - sizeof(TYPE) * (COUNT) * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | kzalloc( - sizeof(TYPE) * (COUNT) * STRIDE + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | kzalloc( - sizeof(TYPE) * COUNT * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | kzalloc( - sizeof(TYPE) * COUNT * STRIDE + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | kzalloc( - sizeof(THING) * (COUNT) * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) | kzalloc( - sizeof(THING) * (COUNT) * STRIDE + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) | kzalloc( - sizeof(THING) * COUNT * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) | kzalloc( - sizeof(THING) * COUNT * STRIDE + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) ) // 3-factor product with 2 sizeof(variable), with redundant parens removed. @@ expression THING1, THING2; identifier COUNT; type TYPE1, TYPE2; @@ ( kzalloc( - sizeof(TYPE1) * sizeof(TYPE2) * COUNT + array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2)) , ...) | kzalloc( - sizeof(TYPE1) * sizeof(THING2) * (COUNT) + array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2)) , ...) | kzalloc( - sizeof(THING1) * sizeof(THING2) * COUNT + array3_size(COUNT, sizeof(THING1), sizeof(THING2)) , ...) | kzalloc( - sizeof(THING1) * sizeof(THING2) * (COUNT) + array3_size(COUNT, sizeof(THING1), sizeof(THING2)) , ...) | kzalloc( - sizeof(TYPE1) * sizeof(THING2) * COUNT + array3_size(COUNT, sizeof(TYPE1), sizeof(THING2)) , ...) | kzalloc( - sizeof(TYPE1) * sizeof(THING2) * (COUNT) + array3_size(COUNT, sizeof(TYPE1), sizeof(THING2)) , ...) ) // 3-factor product, only identifiers, with redundant parens removed. @@ identifier STRIDE, SIZE, COUNT; @@ ( kzalloc( - (COUNT) * STRIDE * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) | kzalloc( - COUNT * (STRIDE) * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) | kzalloc( - COUNT * STRIDE * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | kzalloc( - (COUNT) * (STRIDE) * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) | kzalloc( - COUNT * (STRIDE) * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | kzalloc( - (COUNT) * STRIDE * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | kzalloc( - (COUNT) * (STRIDE) * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | kzalloc( - COUNT * STRIDE * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) ) // Any remaining multi-factor products, first at least 3-factor products, // when they're not all constants... @@ expression E1, E2, E3; constant C1, C2, C3; @@ ( kzalloc(C1 * C2 * C3, ...) | kzalloc( - (E1) * E2 * E3 + array3_size(E1, E2, E3) , ...) | kzalloc( - (E1) * (E2) * E3 + array3_size(E1, E2, E3) , ...) | kzalloc( - (E1) * (E2) * (E3) + array3_size(E1, E2, E3) , ...) | kzalloc( - E1 * E2 * E3 + array3_size(E1, E2, E3) , ...) ) // And then all remaining 2 factors products when they're not all constants, // keeping sizeof() as the second factor argument. @@ expression THING, E1, E2; type TYPE; constant C1, C2, C3; @@ ( kzalloc(sizeof(THING) * C2, ...) | kzalloc(sizeof(TYPE) * C2, ...) | kzalloc(C1 * C2 * C3, ...) | kzalloc(C1 * C2, ...) | - kzalloc + kcalloc ( - sizeof(TYPE) * (E2) + E2, sizeof(TYPE) , ...) | - kzalloc + kcalloc ( - sizeof(TYPE) * E2 + E2, sizeof(TYPE) , ...) | - kzalloc + kcalloc ( - sizeof(THING) * (E2) + E2, sizeof(THING) , ...) | - kzalloc + kcalloc ( - sizeof(THING) * E2 + E2, sizeof(THING) , ...) | - kzalloc + kcalloc ( - (E1) * E2 + E1, E2 , ...) | - kzalloc + kcalloc ( - (E1) * (E2) + E1, E2 , ...) | - kzalloc + kcalloc ( - E1 * E2 + E1, E2 , ...) ) Signed-off-by: Kees Cook <keescook@chromium.org>
2018-06-12treewide: kmalloc() -> kmalloc_array()Kees Cook
The kmalloc() function has a 2-factor argument form, kmalloc_array(). This patch replaces cases of: kmalloc(a * b, gfp) with: kmalloc_array(a * b, gfp) as well as handling cases of: kmalloc(a * b * c, gfp) with: kmalloc(array3_size(a, b, c), gfp) as it's slightly less ugly than: kmalloc_array(array_size(a, b), c, gfp) This does, however, attempt to ignore constant size factors like: kmalloc(4 * 1024, gfp) though any constants defined via macros get caught up in the conversion. Any factors with a sizeof() of "unsigned char", "char", and "u8" were dropped, since they're redundant. The tools/ directory was manually excluded, since it has its own implementation of kmalloc(). The Coccinelle script used for this was: // Fix redundant parens around sizeof(). @@ type TYPE; expression THING, E; @@ ( kmalloc( - (sizeof(TYPE)) * E + sizeof(TYPE) * E , ...) | kmalloc( - (sizeof(THING)) * E + sizeof(THING) * E , ...) ) // Drop single-byte sizes and redundant parens. @@ expression COUNT; typedef u8; typedef __u8; @@ ( kmalloc( - sizeof(u8) * (COUNT) + COUNT , ...) | kmalloc( - sizeof(__u8) * (COUNT) + COUNT , ...) | kmalloc( - sizeof(char) * (COUNT) + COUNT , ...) | kmalloc( - sizeof(unsigned char) * (COUNT) + COUNT , ...) | kmalloc( - sizeof(u8) * COUNT + COUNT , ...) | kmalloc( - sizeof(__u8) * COUNT + COUNT , ...) | kmalloc( - sizeof(char) * COUNT + COUNT , ...) | kmalloc( - sizeof(unsigned char) * COUNT + COUNT , ...) ) // 2-factor product with sizeof(type/expression) and identifier or constant. @@ type TYPE; expression THING; identifier COUNT_ID; constant COUNT_CONST; @@ ( - kmalloc + kmalloc_array ( - sizeof(TYPE) * (COUNT_ID) + COUNT_ID, sizeof(TYPE) , ...) | - kmalloc + kmalloc_array ( - sizeof(TYPE) * COUNT_ID + COUNT_ID, sizeof(TYPE) , ...) | - kmalloc + kmalloc_array ( - sizeof(TYPE) * (COUNT_CONST) + COUNT_CONST, sizeof(TYPE) , ...) | - kmalloc + kmalloc_array ( - sizeof(TYPE) * COUNT_CONST + COUNT_CONST, sizeof(TYPE) , ...) | - kmalloc + kmalloc_array ( - sizeof(THING) * (COUNT_ID) + COUNT_ID, sizeof(THING) , ...) | - kmalloc + kmalloc_array ( - sizeof(THING) * COUNT_ID + COUNT_ID, sizeof(THING) , ...) | - kmalloc + kmalloc_array ( - sizeof(THING) * (COUNT_CONST) + COUNT_CONST, sizeof(THING) , ...) | - kmalloc + kmalloc_array ( - sizeof(THING) * COUNT_CONST + COUNT_CONST, sizeof(THING) , ...) ) // 2-factor product, only identifiers. @@ identifier SIZE, COUNT; @@ - kmalloc + kmalloc_array ( - SIZE * COUNT + COUNT, SIZE , ...) // 3-factor product with 1 sizeof(type) or sizeof(expression), with // redundant parens removed. @@ expression THING; identifier STRIDE, COUNT; type TYPE; @@ ( kmalloc( - sizeof(TYPE) * (COUNT) * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | kmalloc( - sizeof(TYPE) * (COUNT) * STRIDE + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | kmalloc( - sizeof(TYPE) * COUNT * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | kmalloc( - sizeof(TYPE) * COUNT * STRIDE + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | kmalloc( - sizeof(THING) * (COUNT) * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) | kmalloc( - sizeof(THING) * (COUNT) * STRIDE + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) | kmalloc( - sizeof(THING) * COUNT * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) | kmalloc( - sizeof(THING) * COUNT * STRIDE + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) ) // 3-factor product with 2 sizeof(variable), with redundant parens removed. @@ expression THING1, THING2; identifier COUNT; type TYPE1, TYPE2; @@ ( kmalloc( - sizeof(TYPE1) * sizeof(TYPE2) * COUNT + array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2)) , ...) | kmalloc( - sizeof(TYPE1) * sizeof(THING2) * (COUNT) + array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2)) , ...) | kmalloc( - sizeof(THING1) * sizeof(THING2) * COUNT + array3_size(COUNT, sizeof(THING1), sizeof(THING2)) , ...) | kmalloc( - sizeof(THING1) * sizeof(THING2) * (COUNT) + array3_size(COUNT, sizeof(THING1), sizeof(THING2)) , ...) | kmalloc( - sizeof(TYPE1) * sizeof(THING2) * COUNT + array3_size(COUNT, sizeof(TYPE1), sizeof(THING2)) , ...) | kmalloc( - sizeof(TYPE1) * sizeof(THING2) * (COUNT) + array3_size(COUNT, sizeof(TYPE1), sizeof(THING2)) , ...) ) // 3-factor product, only identifiers, with redundant parens removed. @@ identifier STRIDE, SIZE, COUNT; @@ ( kmalloc( - (COUNT) * STRIDE * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) | kmalloc( - COUNT * (STRIDE) * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) | kmalloc( - COUNT * STRIDE * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | kmalloc( - (COUNT) * (STRIDE) * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) | kmalloc( - COUNT * (STRIDE) * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | kmalloc( - (COUNT) * STRIDE * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | kmalloc( - (COUNT) * (STRIDE) * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | kmalloc( - COUNT * STRIDE * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) ) // Any remaining multi-factor products, first at least 3-factor products, // when they're not all constants... @@ expression E1, E2, E3; constant C1, C2, C3; @@ ( kmalloc(C1 * C2 * C3, ...) | kmalloc( - (E1) * E2 * E3 + array3_size(E1, E2, E3) , ...) | kmalloc( - (E1) * (E2) * E3 + array3_size(E1, E2, E3) , ...) | kmalloc( - (E1) * (E2) * (E3) + array3_size(E1, E2, E3) , ...) | kmalloc( - E1 * E2 * E3 + array3_size(E1, E2, E3) , ...) ) // And then all remaining 2 factors products when they're not all constants, // keeping sizeof() as the second factor argument. @@ expression THING, E1, E2; type TYPE; constant C1, C2, C3; @@ ( kmalloc(sizeof(THING) * C2, ...) | kmalloc(sizeof(TYPE) * C2, ...) | kmalloc(C1 * C2 * C3, ...) | kmalloc(C1 * C2, ...) | - kmalloc + kmalloc_array ( - sizeof(TYPE) * (E2) + E2, sizeof(TYPE) , ...) | - kmalloc + kmalloc_array ( - sizeof(TYPE) * E2 + E2, sizeof(TYPE) , ...) | - kmalloc + kmalloc_array ( - sizeof(THING) * (E2) + E2, sizeof(THING) , ...) | - kmalloc + kmalloc_array ( - sizeof(THING) * E2 + E2, sizeof(THING) , ...) | - kmalloc + kmalloc_array ( - (E1) * E2 + E1, E2 , ...) | - kmalloc + kmalloc_array ( - (E1) * (E2) + E1, E2 , ...) | - kmalloc + kmalloc_array ( - E1 * E2 + E1, E2 , ...) ) Signed-off-by: Kees Cook <keescook@chromium.org>
2018-06-08Merge branch 'for-4.18/wacom' into for-linusJiri Kosina
Support for "In Range" flag for Wacom Intuos/Bamboo devices from Jason Gerecke
2018-06-08Merge branch 'for-4.18/upstream' into for-linusJiri Kosina
2018-06-08Merge branch 'for-4.18/rmi' into for-linusJiri Kosina
RMI4 correct split report handling from Benjamin Tissoires
2018-06-08Merge branch 'for-4.18/plantronics' into for-linusJiri Kosina
2018-06-08Merge branch 'for-4.18/multitouch' into for-linusJiri Kosina
- improvement of duplicate usage handling in hid-input from Benjamin Tissoires - Win 8.1 precisioun touchpad spec implementation from Benjamin Tissoires
2018-06-08Merge branch 'for-4.18/i2c-hid' into for-linusJiri Kosina
Assorted smaller fixes to i2c-hid driver
2018-06-08Merge branch 'for-4.18/hid-steam' into for-linusJiri Kosina
Valve Steam Controller support from Rodrigo Rivas Costa
2018-06-08Merge branch 'for-4.18/hid-redragon' into for-linusJiri Kosina
Redragon Asura support from Robert Munteanu
2018-06-08Merge branch 'for-4.18/alps' into for-linusJiri Kosina
hid-alps driver cleanups wrt. t4_read_write_register() handling from Christophe Jaillet
2018-05-30HID: rmi: use HID_QUIRK_NO_INPUT_SYNCBenjamin Tissoires
When we receive a RMI4 report, we should not unconditionally send an input_sync event. Instead, we should let the rmi4 transport layer do it for us. This fixes a situation where we might receive X in a report and the rest in a subsequent one. And this messes up user space. Link: https://bugs.freedesktop.org/show_bug.cgi?id=100436 Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Acked-by: Peter Hutterer <peter.hutterer@who-t.net> Tested-by: Oscar Morante <spacepluk@gmail.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2018-05-30HID: multitouch: fix calculation of last slot field in multi-touch reportsBen Chan
According to [1] and also seemingly agreed by [2], the Scan Time usage (0x0D 0x56) is a report level usage, not a contact level usage. However, the hid-multitouch driver currently includes HID_DG_SCANTIME when calculating `td->last_slot_field', which may lead to mt_complete_slot() being prematurely called in certain cases (e.g. when each touch input report includes more than one contact and the Scan Time usage appears before any contact logical collection). This patch fixes the issue by skipping mt_store_field() on HID_DG_SCANTIME, similar to how HID_DG_CONTACTCOUNT and HID_DG_CONTACTMAX are handled. [1] https://docs.microsoft.com/en-us/windows-hardware/design/component-guidelines/windows-precision-touchpad-required-hid-top-level-collections#windows-precision-touchpad-input-reports [2] https://patchwork.kernel.org/patch/1742181/ Fixes: 29cc309d8bf19 ("HID: hid-multitouch: forward MSC_TIMESTAMP") Signed-off-by: Ben Chan <benchan@chromium.org> Reviewed-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2018-05-30HID: quirks: remove Delcom Visual Signal Indicator from ↵Heiner Kallweit
hid_have_special_driver[] Delcom offers different types of products sharing the same USB VID/PID as the Visual Signal Indicator. Other products need to be handled by HID Generic what's not possible currently because USB VID/PID are listed in hid_have_special_driver[]. After e04a0442d33b ("HID: core: remove the absolute need of hid_have_special_driver[]") we can now remove the Delcom entry. If a Visual Signal Indicator device is plugged-in, HID core will start a reprobe if hid-led driver is available. If another device with same USB VID/PID is plugged-in, then hid-led can be blacklisted and HID Generic handles the device. Thanks to Delcom for providing test devices. Reported-by: Douglas Lovett <dlovett@delcomproducts.com> Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com> Acked-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2018-05-30HID: steam: select CONFIG_POWER_SUPPLYArnd Bergmann
Using the power supply APIs requires selecting the appropriate Kconfig symbol, otherwise we get this build failure: drivers/hid/hid-steam.o: In function `steam_unregister': hid-steam.c:(.text+0x1cc): undefined reference to `power_supply_unregister' drivers/hid/hid-steam.o: In function `steam_battery_get_property': hid-steam.c:(.text+0x2d2): undefined reference to `power_supply_get_drvdata' drivers/hid/hid-steam.o: In function `steam_raw_event': hid-steam.c:(.text+0xcba): undefined reference to `power_supply_changed' drivers/hid/hid-steam.o: In function `steam_register': hid-steam.c:(.text+0x13e3): undefined reference to `power_supply_register' hid-steam.c:(.text+0x13fe): undefined reference to `power_supply_powers' Fixes: f82719790751 ("HID: steam: add battery device.") Signed-off-by: Arnd Bergmann <arnd@arndb.de> Reviewed-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2018-05-30HID: i2c-hid: remove i2c_hid_open_mutSebastian Andrzej Siewior
Since commit 85ae91133152 ("HID: i2c-hid: remove custom locking from i2c_hid_open/close") there are no more users of i2c_hid_open_mut. Remove the unused mutex. Cc: Dmitry Torokhov <dmitry.torokhov@gmail.com> Cc: Jiri Kosina <jikos@kernel.org> Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Reviewed-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2018-05-22HID: wacom: Support "in range" for Intuos/Bamboo tablets where possibleJason Gerecke
The 1st-generation Intuos tablets (CTL-X80) include an "in range" flag like some professional tablets. To ensure the pen remains usable at as large as distance as possible (and to preemptively disable touch when it is nearby) we need to ensure that we handle these "in range" events. Handling of tool type identification has been moved to occur only when the pen is fully in prox rather than any time the "stylus_in_proximity" flag changes (which is controlled by the further-out "in range" flag). Link: https://sourceforge.net/p/linuxwacom/bugs/358/ Link: https://github.com/linuxwacom/xf86-input-wacom/issues/14 Link: https://github.com/linuxwacom/xf86-input-wacom/issues/17 Signed-off-by: Jason Gerecke <jason.gerecke@wacom.com> Tested-by: Ping Cheng <ping.cheng@wacom.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2018-05-16HID: core: fix hid_hw_open() commentHisao Tanabe
Fix comment typo for hid_hw_open(). [jkosina@suse.cz: write at least some changelog] Signed-off-by: Hisao Tanabe <xtanabe@gmail.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2018-05-16HID: hid-plantronics: Re-resend Update to map button for PTT productsTerry Junge
Add a mapping for Push-To-Talk joystick trigger button. Tested on ChromeBox/ChromeBook with various Plantronics devices. Signed-off-by: Terry Junge <terry.junge@plantronics.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2018-05-16HID: multitouch: fix types returned from mt_need_to_apply_feature()Jiri Kosina
Some exit paths from mt_need_to_apply_feature() returned int instead of bool; fix that up. Reported-by: kbuild test robot <lkp@intel.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2018-05-15HID: i2c-hid: check if device is there before really probingDmitry Torokhov
On many Chromebooks touch devices are multi-sourced; the components are electrically compatible and one can be freely swapped for another without changing the OS image or firmware. To avoid bunch of scary messages when device is not actually present in the system let's try testing basic communication with it and if there is no response terminate probe early with -ENXIO. Signed-off-by: Dmitry Torokhov <dtor@chromium.org> Reviewed-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2018-05-15HID: steam: add missing fields in client initializationJiri Kosina
->product, ->version and ->type fields in the client struct were left out unitialized from the hid device fields; fix that. Reported-by: Rodrigo Rivas Costa <rodrigorivascosta@gmail.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2018-05-15HID: steam: add battery device.Rodrigo Rivas Costa
The wireless Steam Controller is battery operated, so add the battery device and power information. Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2018-05-15HID: add driver for Valve Steam ControllerRodrigo Rivas Costa
There are two ways to connect the Steam Controller: directly to the USB or with the USB wireless adapter. Both methods are similar, but the wireless adapter can connect up to 4 devices at the same time. The wired device will appear as 3 interfaces: a virtual mouse, a virtual keyboard and a custom HID device. The wireless device will appear as 5 interfaces: a virtual keyboard and 4 custom HID devices, that will remain silent until a device is actually connected. The custom HID device has a report descriptor with all vendor specific usages, so the hid-generic is not very useful. In a PC/SteamBox Valve Steam Client provices a software translation by using hidraw and a creates a uinput virtual gamepad and XTest keyboard/mouse. This driver intercepts the hidraw usage, so it can get out of the way when the Steam Client is in use. Signed-off-by: Rodrigo Rivas Costa <rodrigorivascosta@gmail.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2018-05-09HID: i2c-hid: Add RESEND_REPORT_DESCR quirk for Toshiba Click Mini L9W-BHans de Goede
The 0457:10fb touchscreen found on the Toshiba Click Mini L9W-B needs to have a report-decriptors command send to it on resume in order for the touchscreen to start generating events again on resume. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Acked-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2018-04-26HID: intel-ish-hid: use put_device() instead of kfree()Arvind Yadav
Never directly free @dev after calling device_register(), even if it returned an error. Always use put_device() to give up the reference initialized. Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2018-04-26HID: alps: Fix some style in 't4_read_write_register()'Christophe JAILLET
Better indent the code to improve readability. Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2018-04-26HID: alps: Check errors returned by 't4_read_write_register()'Christophe JAILLET
If only the first 't4_read_write_register()' call fails, the error code will be overwritten and lost. Directly report the error instead. While at it, log some errors if 't4_read_write_register()' fails, as done in the rest of the driver. Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2018-04-26HID: alps: Save a memory allocation in 't4_read_write_register()' when ↵Christophe JAILLET
writing data if 'read_flag' is false, there is no need to allocate and free memory. We can simply avoid the memory allocation and pass NULL to kfree. Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2018-04-26HID: alps: Report an error if we receive invalid data in ↵Christophe JAILLET
't4_read_write_register()' If the data received is not what is expected, we should return an error. Otherwise, we return 0 or a positive value which will be interpreted as success, but '*read_val' has not been updated. Fixes: 73196ebe134d ("HID: alps: add support for Alps T4 Touchpad device") Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2018-04-26HID: multitouch: implement precision touchpad latency and switchesBenjamin Tissoires
The Win 8.1 precision touchpad spec introduce new modes for touchpads that can come in handy[1]. Implement the settings of these modes, so we are not taken off-guard if a firmware decides to enforce them. [1] https://docs.microsoft.com/en-us/windows-hardware/design/component-guidelines/windows-precision-touchpad-required-hid-top-level-collections Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2018-04-26HID: multitouch: simplify the settings of the various featuresBenjamin Tissoires
The Win8 spec also declare other features we want to support: latency and surface and button switches. Though it doesn't seem we need to activate those by default, we have been proved in the past that manufacturers rely on the Windows driver behavior so we better mimic it to prevent further issues. The current way of setting the features is cumbersome. It avoids iterating over the list of features, but the way we store/retrieve the data just doesn't scale with more than two values. So iterate over the features when we decide to switch on the device and make it simpler to extend. Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2018-04-26HID: multitouch: make use of HID_QUIRK_INPUT_PER_APPBenjamin Tissoires
We now have HID_QUIRK_INPUT_PER_APPLICATION that splits the devices into several devices. This helps us as we can now rely on hid-input to set the names for us. Also, this helps removing some magical numbers '0' when calling .input_configured(). The only thing to take care of is that the field .report in struct hid_input is now null. We need to iterate over the full list of reports attached to a hid_input. This is required for some Advanced Silicon touchscreen to correctly apply the HID_QUIRK_INPUT_PER_APPLICATION as they have 2 reports associated with the hidinput node. One contains the Input data, the other one contains the Output data. Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2018-04-26HID: input: append a suffix matching the applicationBenjamin Tissoires
Given that we create one input node per application, we should name the input node accordingly to not lose userspace. Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2018-04-26HID: generic: create one input report per application typeBenjamin Tissoires
It is not a good idea to try to fit all types of applications in the same input report. There are a lot of devices that are needing the quirk HID_MULTI_INPUT but this quirk doesn't match the actual HID description as it is based on the report ID. Given that most devices with MULTI_INPUT I can think of split nicely the devices inputs into application, it is a good thing to split the devices by default based on this assumption. Also make hid-multitouch following this rule, to not have to deal with too many input created. While we are at it, fix some checkpatch complaints about converting 'unsigned' to 'unsigned int'. Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2018-04-26HID: store the full list of reports in the hidinputBenjamin Tissoires
We were only storing the report in case of QUIRK_MULTI_INPUT. It is interesting for the upcoming HID_QUIRK_INPUT_PER_APP to also store the full list of reports that are attached to it. We need the full list because a device (Advanced Silicon has some) might want to use a different report ID for the Input reports and the Output reports. Storing the full list allows the drivers to have all the data. Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2018-04-25HID: intel_ish-hid: Stop using a static local buffer in get_report()Hans de Goede
hid_ishtp_get_report() may be called by multiple callers at the same time, causing trouble with the static local buffer used. Also there is no reason to use a non stack buffer, the buffer is tiny and ishtp_cl_send() copies its contents so the lifetime is not an issue either. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Reviewed-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2018-04-25HID: intel_ish-hid: Move header size check to inside the loopHans de Goede
With the headersize check outside of the loop, the second time through the loop the: "payload_len = recv_msg->hdr.size;" statement may deref recv_msg while it is pointing outside of our input buffer. Move the headersize check to inside the loop to fix this. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Reviewed-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2018-04-25HID: wacom: Release device resource data obtained by devres_alloc()Arvind Yadav
Free device resource data, if __wacom_devm_sysfs_create_group is not successful. Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com> Reviewed-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2018-04-25HID: lenovo: Add support for IBM/Lenovo Scrollpoint micepgzh
The IBM/Lenovo Scrollpoint mice feature a trackpoint-like stick instead of a scrolling wheel capable of 2-D (vertical+horizontal) scrolling. hid-generic does only expose 1-D (vertical) scrolling functionality for these mice. This patch adds support for horizontal scrolling for the IBM/Lenovo Scrollpoint mice to hid-lenovo. [jkosina@suse.cz: remove change versioning from git changelog] Signed-off-by: Peter Ganzhorn <peter.ganzhorn@gmail.com> Reviewed-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Signed-off-by: Peter De Wachter <pdewacht@gmail.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2018-04-19HID: i2c-hid: fix inverted return value from i2c_hid_command()Jiri Kosina
i2c_hid_command() returns non-zero in error cases (the actual errno). Error handling in for I2C_HID_QUIRK_RESEND_REPORT_DESCR case in i2c_hid_resume() had the check inverted; fix that. Fixes: 3e83eda467 ("HID: i2c-hid: Fix resume issue on Raydium touchscreen device") Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2018-04-17HID: input: do not increment usages when a duplicate is foundBenjamin Tissoires
This is something that bothered us from a long time. When hid-input doesn't know how to map a usage, it uses *_MISC. But there is something else which increments the usage if the evdev code is already used. This leads to few issues: - some devices may have their ABS_X mapped to ABS_Y if they export a bad set of usages (see the DragonRise joysticks IIRC -> fixed in a specific HID driver) - *_MISC + N might (will) conflict with other defined axes (my Logitech H800 exports some multitouch axes because of that) - this prevents to freely add some new evdev usages, because "hey, my headset will now report ABS_COFFEE, and it's not coffee capable". So let's try to kill this nonsense, and hope we won't break too many devices. I my headset case, the ABS_MISC axes are created because of some proprietary usages, so we might not break that many devices. For backward compatibility, a quirk HID_QUIRK_INCREMENT_USAGE_ON_DUPLICATE is created and can be applied to any device that needs this behavior. Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Acked-by: Peter Hutterer <peter.hutterer@who-t.net> Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2018-04-17HID: redragon: Fix modifier keys for Redragon Asura KeyboardRobert Munteanu
This adds a new driver for the Redragon Asura keyboard. The Asura keyboard contains an error in the HID descriptor which causes all modifier keys to be mapped to left shift. Additionally, we suppress the creation of a second, not working, keyboard device. Signed-off-by: Robert Munteanu <rombert@apache.org> Reviewed-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2018-04-16HID: i2c-hid: Silently fail probe for CHPN0001 touchscreenHans de Goede
The CHPN0001 ACPI device has a _CID of PNP0C50 and even has the _DSM to get the HID descriptor address, but it is not a HID device at all. It uses its own protocol which is handled by the (still being upstreamed) chipone_icn8505 driver. I guess the _CID and the _DSM are the result of a copy and paste job when the vendor was building the ACPI tables. Before this patch the i2c_hid_driver's probe function will fail with a "hid_descr_cmd failed" error. This commit makes the i2c_hid_driver's probe function instead silently ignored devices with an ACPI id of CHPN0001. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2018-04-16HID: i2c-hid: Move i2c_hid_acpi_pdata error reporting to inside the functionHans de Goede
Log an error in all error paths of i2c_hid_acpi_pdata() instead of having the caller log a generic error. This is a preparation patch for allowing i2c_hid_acpi_pdata() to fail silently under certain conditions. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2018-04-12HID: i2c-hid: Fix resume issue on Raydium touchscreen deviceAaron Ma
When Rayd touchscreen resumed from S3, it issues too many errors like: i2c_hid i2c-RAYD0001:00: i2c_hid_get_input: incomplete report (58/5442) And all the report data are corrupted, touchscreen is unresponsive. Fix this by re-sending report description command after resume. Add device ID as a quirk. Cc: stable@vger.kernel.org Signed-off-by: Aaron Ma <aaron.ma@canonical.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2018-04-12HID: wacom: bluetooth: send exit report for recent Bluetooth devicesAaron Armstrong Skomra
The code path for recent Bluetooth devices omits an exit report which resets all the values of the device. Fixes: 4922cd26f0 ("HID: wacom: Support 2nd-gen Intuos Pro's Bluetooth classic interface") Cc: <stable@vger.kernel.org> # 4.11 Signed-off-by: Aaron Armstrong Skomra <aaron.skomra@wacom.com> Reviewed-by: Ping Cheng <ping.cheng@wacom.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2018-04-09HID: hidraw: Fix crash on HIDIOCGFEATURE with a destroyed deviceRodrigo Rivas Costa
Doing `ioctl(HIDIOCGFEATURE)` in a tight loop on a hidraw device and then disconnecting the device, or unloading the driver, can cause a NULL pointer dereference. When a hidraw device is destroyed it sets 0 to `dev->exist`. Most functions check 'dev->exist' before doing its work, but `hidraw_get_report()` was missing that check. Cc: stable@vger.kernel.org Signed-off-by: Rodrigo Rivas Costa <rodrigorivascosta@gmail.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
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