diff options
| author | Dimitris Papastamos <dp@opensource.wolfsonmicro.com> | 2013-05-09 12:46:41 +0100 |
|---|---|---|
| committer | Mark Brown <broonie@opensource.wolfsonmicro.com> | 2013-05-12 18:57:48 +0400 |
| commit | 68e850d80df934b9c9c15d8a0956512cb3b6f1fc (patch) | |
| tree | 8dfd5b2631a126955dec093baae1210081213134 /drivers/base | |
| parent | f722406faae2d073cc1d01063d1123c35425939e (diff) | |
regmap: debugfs: Check return value of regmap_write()
Signed-off-by: Dimitris Papastamos <dp@opensource.wolfsonmicro.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Diffstat (limited to 'drivers/base')
| -rw-r--r-- | drivers/base/regmap/regmap-debugfs.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/base/regmap/regmap-debugfs.c b/drivers/base/regmap/regmap-debugfs.c index 23b701f5fd2f..975719bc3450 100644 --- a/drivers/base/regmap/regmap-debugfs.c +++ b/drivers/base/regmap/regmap-debugfs.c @@ -265,6 +265,7 @@ static ssize_t regmap_map_write_file(struct file *file, char *start = buf; unsigned long reg, value; struct regmap *map = file->private_data; + int ret; buf_size = min(count, (sizeof(buf)-1)); if (copy_from_user(buf, user_buf, buf_size)) @@ -282,7 +283,9 @@ static ssize_t regmap_map_write_file(struct file *file, /* Userspace has been fiddling around behind the kernel's back */ add_taint(TAINT_USER, LOCKDEP_NOW_UNRELIABLE); - regmap_write(map, reg, value); + ret = regmap_write(map, reg, value); + if (ret < 0) + return ret; return buf_size; } #else |