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path: root/drivers/uio/uio.c
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Diffstat (limited to 'drivers/uio/uio.c')
-rw-r--r--drivers/uio/uio.c25
1 files changed, 17 insertions, 8 deletions
diff --git a/drivers/uio/uio.c b/drivers/uio/uio.c
index d9235f30e46d..1883ce620ea9 100644
--- a/drivers/uio/uio.c
+++ b/drivers/uio/uio.c
@@ -568,20 +568,29 @@ static ssize_t uio_write(struct file *filep, const char __user *buf,
ssize_t retval;
s32 irq_on;
- if (!idev->info->irq)
- return -EIO;
+ if (!idev->info->irq) {
+ retval = -EIO;
+ goto out;
+ }
- if (count != sizeof(s32))
- return -EINVAL;
+ if (count != sizeof(s32)) {
+ retval = -EINVAL;
+ goto out;
+ }
- if (!idev->info->irqcontrol)
- return -ENOSYS;
+ if (!idev->info->irqcontrol) {
+ retval = -ENOSYS;
+ goto out;
+ }
- if (copy_from_user(&irq_on, buf, count))
- return -EFAULT;
+ if (copy_from_user(&irq_on, buf, count)) {
+ retval = -EFAULT;
+ goto out;
+ }
retval = idev->info->irqcontrol(idev->info, irq_on);
+out:
return retval ? retval : sizeof(s32);
}