From: Arnd Bergmann <arnd@xxxxxxxx>
The number of bytes returned from the write function is now
undefined:
drivers/input/serio/serio_raw.c:204:12: error: variable 'written' is uninitialized when used here [-Werror,-Wuninitialized]
204 | return written ?: -EIO;
| ^~~~~~~
Fixes: 5b53a9d40c4f ("Input: serio_raw - use guard notation for locks and other resources")
Reported-by: kernel test robot <lkp@xxxxxxxxx>
Reported-by: Dan Carpenter <error27@xxxxxxxxx>
Closes: https://lore.kernel.org/oe-kbuild-all/202410201730.ItNhUTIv-lkp@xxxxxxxxx/
Closes: https://lore.kernel.org/r/202410201759.qnyACw46-lkp@xxxxxxxxx/
Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>
---
drivers/input/serio/serio_raw.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/input/serio/serio_raw.c b/drivers/input/serio/serio_raw.c
index e058fef07f57..55fe77d04089 100644
--- a/drivers/input/serio/serio_raw.c
+++ b/drivers/input/serio/serio_raw.c
@@ -195,6 +195,7 @@ static ssize_t serio_raw_write(struct file *file, const char __user *buffer,
if (count > 32)
count = 32;
+ written = 0;
while (count--) {
if (get_user(c, buffer++))
return -EFAULT;
--
2.39.5
