diff options
| author | Arnd Bergmann <arnd@arndb.de> | 2022-05-05 15:59:27 +0200 |
|---|---|---|
| committer | Arnd Bergmann <arnd@arndb.de> | 2022-05-05 15:59:28 +0200 |
| commit | 91f92d70387bbb116d3401666d8bffe4b9f98845 (patch) | |
| tree | 60218a9781ac1b347dd234e6acb83e466bdde6bc /drivers/firmware | |
| parent | a37de2ad8e2d0982329fdb8ec1021abf040ac53f (diff) | |
| parent | f3f3bdbd58cea4fdd088075fdc8864fc47ecd419 (diff) | |
Merge tag 'ffa-updates-5.19' of git://git.kernel.org/pub/scm/linux/kernel/git/sudeep.holla/linux into arm/drivers
Arm FF-A firmware driver updates/fixes for v5.19
Couple of fixes to handle fragmented memory descriptors and incorrect
UUID parameter passed to ffa_partition_probe. Another fix deals with
the incorrect use of ffa_device's driver_data by the core driver.
Apart from these fixes, there is an addition of ffa_dev_get_drvdata helper
function and its use in optee driver.
* tag 'ffa-updates-5.19' of git://git.kernel.org/pub/scm/linux/kernel/git/sudeep.holla/linux:
tee: optee: Use ffa_dev_get_drvdata to fetch driver_data
firmware: arm_ffa: Add ffa_dev_get_drvdata helper function
firmware: arm_ffa: Remove incorrect assignment of driver_data
firmware: arm_ffa: Fix uuid parameter to ffa_partition_probe
firmware: arm_ffa: Fix handling of fragmented memory descriptors
Link: https://lore.kernel.org/r/20220504112853.3491961-1-sudeep.holla@arm.com
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'drivers/firmware')
| -rw-r--r-- | drivers/firmware/arm_ffa/driver.c | 24 |
1 files changed, 14 insertions, 10 deletions
diff --git a/drivers/firmware/arm_ffa/driver.c b/drivers/firmware/arm_ffa/driver.c index 14f900047ac0..ec731e9e942b 100644 --- a/drivers/firmware/arm_ffa/driver.c +++ b/drivers/firmware/arm_ffa/driver.c @@ -398,11 +398,15 @@ static int ffa_mem_first_frag(u32 func_id, phys_addr_t buf, u32 buf_sz, if (ret.a0 == FFA_ERROR) return ffa_to_linux_errno((int)ret.a2); - if (ret.a0 != FFA_SUCCESS) + if (ret.a0 == FFA_SUCCESS) { + if (handle) + *handle = PACK_HANDLE(ret.a2, ret.a3); + } else if (ret.a0 == FFA_MEM_FRAG_RX) { + if (handle) + *handle = PACK_HANDLE(ret.a1, ret.a2); + } else { return -EOPNOTSUPP; - - if (handle) - *handle = PACK_HANDLE(ret.a2, ret.a3); + } return frag_len; } @@ -426,10 +430,12 @@ static int ffa_mem_next_frag(u64 handle, u32 frag_len) if (ret.a0 == FFA_ERROR) return ffa_to_linux_errno((int)ret.a2); - if (ret.a0 != FFA_MEM_FRAG_RX) - return -EOPNOTSUPP; + if (ret.a0 == FFA_MEM_FRAG_RX) + return ret.a3; + else if (ret.a0 == FFA_SUCCESS) + return 0; - return ret.a3; + return -EOPNOTSUPP; } static int @@ -582,7 +588,7 @@ static int ffa_partition_info_get(const char *uuid_str, return -ENODEV; } - count = ffa_partition_probe(&uuid_null, &pbuf); + count = ffa_partition_probe(&uuid, &pbuf); if (count <= 0) return -ENOENT; @@ -688,8 +694,6 @@ static void ffa_setup_partitions(void) __func__, tpbuf->id); continue; } - - ffa_dev_set_drvdata(ffa_dev, drv_info); } kfree(pbuf); } |