Sparse reports below warnings.
us122l.c:393:28: warning: incorrect type in argument 1 (different address spaces)
us122l.c:393:28: expected void const [noderef] <asn:1>*<noident>
us122l.c:393:28: got void *<noident>
The first argument for memdup_user() should be a pointer to userspace.
In current implementation, a pointer to void is used without __user
qualifier.
This commit fixes it.
Fixes: 030a07e4412 ('ALSA: Add USB US122L driver')
Signed-off-by: Takashi Sakamoto <o-takashi@xxxxxxxxxxxxx>
---
sound/usb/usx2y/us122l.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/sound/usb/usx2y/us122l.c b/sound/usb/usx2y/us122l.c
index 36654ac..c578c42 100644
--- a/sound/usb/usx2y/us122l.c
+++ b/sound/usb/usx2y/us122l.c
@@ -390,7 +390,7 @@ static int usb_stream_hwdep_ioctl(struct snd_hwdep *hw, struct file *file,
if (cmd != SNDRV_USB_STREAM_IOCTL_SET_PARAMS)
return -ENOTTY;
- cfg = memdup_user((void *)arg, sizeof(*cfg));
+ cfg = memdup_user((void __user *)arg, sizeof(*cfg));
if (IS_ERR(cfg))
return PTR_ERR(cfg);
--
2.7.4
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