diff options
| author | Nicolas Iooss <nicolas.iooss_linux@m4x.org> | 2016-08-25 15:17:00 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2016-08-26 17:39:35 -0700 |
| commit | ae6c33ba6e37eea3012fe2640b22400ef3f2d0f3 (patch) | |
| tree | 1b9b32d65ef7db7a0078f31a5f325bc108ba6dd2 /kernel | |
| parent | 804dd150468cfd920d92d4b3cf00536fedef3902 (diff) | |
| download | lwn-ae6c33ba6e37eea3012fe2640b22400ef3f2d0f3.tar.gz lwn-ae6c33ba6e37eea3012fe2640b22400ef3f2d0f3.zip | |
printk: fix parsing of "brl=" option
Commit bbeddf52adc1 ("printk: move braille console support into separate
braille.[ch] files") moved the parsing of braille-related options into
_braille_console_setup(), changing the type of variable str from char*
to char**. In this commit, memcmp(str, "brl,", 4) was correctly updated
to memcmp(*str, "brl,", 4) but not memcmp(str, "brl=", 4).
Update the code to make "brl=" option work again and replace memcmp()
with strncmp() to make the compiler able to detect such an issue.
Fixes: bbeddf52adc1 ("printk: move braille console support into separate braille.[ch] files")
Link: http://lkml.kernel.org/r/20160823165700.28952-1-nicolas.iooss_linux@m4x.org
Signed-off-by: Nicolas Iooss <nicolas.iooss_linux@m4x.org>
Cc: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/printk/braille.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/kernel/printk/braille.c b/kernel/printk/braille.c index 276762f3a460..d5760c42f042 100644 --- a/kernel/printk/braille.c +++ b/kernel/printk/braille.c @@ -9,10 +9,10 @@ char *_braille_console_setup(char **str, char **brl_options) { - if (!memcmp(*str, "brl,", 4)) { + if (!strncmp(*str, "brl,", 4)) { *brl_options = ""; *str += 4; - } else if (!memcmp(str, "brl=", 4)) { + } else if (!strncmp(*str, "brl=", 4)) { *brl_options = *str + 4; *str = strchr(*brl_options, ','); if (!*str) |