put_user() may fail, if so return -EFAULT.
Signed-off-by: Kulikov Vasiliy <segooon@xxxxxxxxx>
---
drivers/scsi/ch.c | 5 ++++-
1 files changed, 4 insertions(+), 1 deletions(-)
diff --git a/drivers/scsi/ch.c b/drivers/scsi/ch.c
index 4799d43..978bf68 100644
--- a/drivers/scsi/ch.c
+++ b/drivers/scsi/ch.c
@@ -548,7 +548,10 @@ static int ch_gstatus(scsi_changer *ch, int type, unsigned char __user *dest)
retval = -EIO;
break;
}
- put_user(data[2], dest+i);
+ if (put_user(data[2], dest+i)) {
+ retval = -EFAULT;
+ break;
+ }
if (data[2] & CESTATUS_EXCEPT)
vprintk("element 0x%x: asc=0x%x, ascq=0x%x\n",
ch->firsts[type]+i,
--
1.7.0.4
--
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