| Message ID | 1370267943-13297-1-git-send-email-shawn.guo@linaro.org (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
Shawn, On 03-06-2013 09:59, Shawn Guo wrote: > When function __find_governor() gets called from policy_store(), the > argument 'buf' has a '\n' character at the end. This causes strnicmp() > mismatches all the time. Consequently, policy_store() will always > return -EINVAL, and hence the policy store via sysfs will always fail > even when users store a correct policy name. > > Fix the problem by using strncasecmp() for policy name matching in > __find_governor(). > Thanks for your patch, but Andy has fixed this issue already here: http://git.kernel.org/cgit/linux/kernel/git/rzhang/linux.git/commit/?h=next&id=42a5bf507d7f7ecbf606eb392dd9d2e4d009c36b Patch is present in thermal/next. > Signed-off-by: Shawn Guo <shawn.guo@linaro.org> > --- > drivers/thermal/thermal_core.c | 5 +++-- > 1 file changed, 3 insertions(+), 2 deletions(-) > > diff --git a/drivers/thermal/thermal_core.c b/drivers/thermal/thermal_core.c > index d755440..6ba869f 100644 > --- a/drivers/thermal/thermal_core.c > +++ b/drivers/thermal/thermal_core.c > @@ -57,9 +57,10 @@ static struct thermal_governor *__find_governor(const char *name) > { > struct thermal_governor *pos; > > - list_for_each_entry(pos, &thermal_governor_list, governor_list) > - if (!strnicmp(name, pos->name, THERMAL_NAME_LENGTH)) > + list_for_each_entry(pos, &thermal_governor_list, governor_list) { > + if (!strncasecmp(name, pos->name, strlen(pos->name))) > return pos; > + } > > return NULL; > } >
diff --git a/drivers/thermal/thermal_core.c b/drivers/thermal/thermal_core.c index d755440..6ba869f 100644 --- a/drivers/thermal/thermal_core.c +++ b/drivers/thermal/thermal_core.c @@ -57,9 +57,10 @@ static struct thermal_governor *__find_governor(const char *name) { struct thermal_governor *pos; - list_for_each_entry(pos, &thermal_governor_list, governor_list) - if (!strnicmp(name, pos->name, THERMAL_NAME_LENGTH)) + list_for_each_entry(pos, &thermal_governor_list, governor_list) { + if (!strncasecmp(name, pos->name, strlen(pos->name))) return pos; + } return NULL; }
When function __find_governor() gets called from policy_store(), the argument 'buf' has a '\n' character at the end. This causes strnicmp() mismatches all the time. Consequently, policy_store() will always return -EINVAL, and hence the policy store via sysfs will always fail even when users store a correct policy name. Fix the problem by using strncasecmp() for policy name matching in __find_governor(). Signed-off-by: Shawn Guo <shawn.guo@linaro.org> --- drivers/thermal/thermal_core.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-)