Commit 68e850d8 authored by Dimitris Papastamos's avatar Dimitris Papastamos Committed by Mark Brown
Browse files

regmap: debugfs: Check return value of regmap_write()



Signed-off-by: default avatarDimitris Papastamos <dp@opensource.wolfsonmicro.com>
Signed-off-by: default avatarMark Brown <broonie@opensource.wolfsonmicro.com>
parent f722406f
......@@ -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
......
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