diff options
| -rw-r--r-- | drivers/firmware/efivars.c | 17 | ||||
| -rw-r--r-- | drivers/firmware/google/gsmi.c | 19 | ||||
| -rw-r--r-- | include/linux/efi.h | 17 |
3 files changed, 21 insertions, 32 deletions
diff --git a/drivers/firmware/efivars.c b/drivers/firmware/efivars.c index 7acafb80fd4c..34c8783a2aa8 100644 --- a/drivers/firmware/efivars.c +++ b/drivers/firmware/efivars.c @@ -172,23 +172,6 @@ static void efivar_update_sysfs_entries(struct work_struct *); static DECLARE_WORK(efivar_work, efivar_update_sysfs_entries); static bool efivar_wq_enabled = true; -/* Return the number of unicode characters in data */ -static unsigned long -utf16_strnlen(efi_char16_t *s, size_t maxlength) -{ - unsigned long length = 0; - - while (*s++ != 0 && length < maxlength) - length++; - return length; -} - -static inline unsigned long -utf16_strlen(efi_char16_t *s) -{ - return utf16_strnlen(s, ~0UL); -} - /* * Return the number of bytes is the length of this string * Note: this is NOT the same as the number of unicode characters diff --git a/drivers/firmware/google/gsmi.c b/drivers/firmware/google/gsmi.c index 91ddf0f7a1b9..c409a7577afc 100644 --- a/drivers/firmware/google/gsmi.c +++ b/drivers/firmware/google/gsmi.c @@ -288,17 +288,6 @@ static int gsmi_exec(u8 func, u8 sub) return rc; } -/* Return the number of unicode characters in data */ -static size_t -utf16_strlen(efi_char16_t *data, unsigned long maxlength) -{ - unsigned long length = 0; - - while (*data++ != 0 && length < maxlength) - length++; - return length; -} - static efi_status_t gsmi_get_variable(efi_char16_t *name, efi_guid_t *vendor, u32 *attr, unsigned long *data_size, @@ -311,7 +300,7 @@ static efi_status_t gsmi_get_variable(efi_char16_t *name, }; efi_status_t ret = EFI_SUCCESS; unsigned long flags; - size_t name_len = utf16_strlen(name, GSMI_BUF_SIZE / 2); + size_t name_len = utf16_strnlen(name, GSMI_BUF_SIZE / 2); int rc; if (name_len >= GSMI_BUF_SIZE / 2) @@ -380,7 +369,7 @@ static efi_status_t gsmi_get_next_variable(unsigned long *name_size, return EFI_BAD_BUFFER_SIZE; /* Let's make sure the thing is at least null-terminated */ - if (utf16_strlen(name, GSMI_BUF_SIZE / 2) == GSMI_BUF_SIZE / 2) + if (utf16_strnlen(name, GSMI_BUF_SIZE / 2) == GSMI_BUF_SIZE / 2) return EFI_INVALID_PARAMETER; spin_lock_irqsave(&gsmi_dev.lock, flags); @@ -408,7 +397,7 @@ static efi_status_t gsmi_get_next_variable(unsigned long *name_size, /* Copy the name back */ memcpy(name, gsmi_dev.name_buf->start, GSMI_BUF_SIZE); - *name_size = utf16_strlen(name, GSMI_BUF_SIZE / 2) * 2; + *name_size = utf16_strnlen(name, GSMI_BUF_SIZE / 2) * 2; /* copy guid to return buffer */ memcpy(vendor, ¶m.guid, sizeof(param.guid)); @@ -434,7 +423,7 @@ static efi_status_t gsmi_set_variable(efi_char16_t *name, EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS, }; - size_t name_len = utf16_strlen(name, GSMI_BUF_SIZE / 2); + size_t name_len = utf16_strnlen(name, GSMI_BUF_SIZE / 2); efi_status_t ret = EFI_SUCCESS; int rc; unsigned long flags; diff --git a/include/linux/efi.h b/include/linux/efi.h index 9bf2f1fcae27..d1d782a6d34c 100644 --- a/include/linux/efi.h +++ b/include/linux/efi.h @@ -719,6 +719,23 @@ static inline void memrange_efi_to_native(u64 *addr, u64 *npages) *addr &= PAGE_MASK; } +/* Return the number of unicode characters in data */ +static inline unsigned long +utf16_strnlen(efi_char16_t *s, size_t maxlength) +{ + unsigned long length = 0; + + while (*s++ != 0 && length < maxlength) + length++; + return length; +} + +static inline unsigned long +utf16_strlen(efi_char16_t *s) +{ + return utf16_strnlen(s, ~0UL); +} + #if defined(CONFIG_EFI_VARS) || defined(CONFIG_EFI_VARS_MODULE) /* * EFI Variable support. |