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| author | Enric Balletbo i Serra <enric.balletbo@collabora.com> | 2019-03-13 15:22:53 +0300 |
|---|---|---|
| committer | MyungJoo Ham <myungjoo.ham@samsung.com> | 2019-04-16 03:29:18 +0300 |
| commit | b53b0128052ffd687797d5f4deeb76327e7b5711 (patch) | |
| tree | 18949b386205cc8dc96207e9c8b641283a15d10c /drivers | |
| parent | bc658bef97a70094d4347faab7cabf2f5267d03f (diff) | |
| download | linux-b53b0128052ffd687797d5f4deeb76327e7b5711.tar.xz | |
PM / devfreq: Fix static checker warning in try_then_request_governor
The patch 23c7b54ca1cd: "PM / devfreq: Fix devfreq_add_device() when
drivers are built as modules." leads to the following static checker
warning:
drivers/devfreq/devfreq.c:1043 governor_store()
warn: 'governor' can also be NULL
The reason is that the try_then_request_governor() function returns both
error pointers and NULL. It should just return error pointers, so fix
this by returning a ERR_PTR to the error intead of returning NULL.
Fixes: 23c7b54ca1cd ("PM / devfreq: Fix devfreq_add_device() when drivers are built as modules.")
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Reviewed-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: MyungJoo Ham <myungjoo.ham@samsung.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/devfreq/devfreq.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/devfreq/devfreq.c b/drivers/devfreq/devfreq.c index 08dfcdc2ac58..8928383a1fa1 100644 --- a/drivers/devfreq/devfreq.c +++ b/drivers/devfreq/devfreq.c @@ -228,7 +228,7 @@ static struct devfreq_governor *find_devfreq_governor(const char *name) * if is not found. This can happen when both drivers (the governor driver * and the driver that call devfreq_add_device) are built as modules. * devfreq_list_lock should be held by the caller. Returns the matched - * governor's pointer. + * governor's pointer or an error pointer. */ static struct devfreq_governor *try_then_request_governor(const char *name) { @@ -254,7 +254,7 @@ static struct devfreq_governor *try_then_request_governor(const char *name) /* Restore previous state before return */ mutex_lock(&devfreq_list_lock); if (err) - return NULL; + return ERR_PTR(err); governor = find_devfreq_governor(name); } |