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[media] wl128x: fix compiler warning + wrong write() return

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The fix is to check for ret and return -EFAULT if non-zero.

I also noticed that write() didn't return the number of bytes written.
Fixed as well.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Hans Verkuil 2011-08-25 09:43:49 -03:00 committed by Mauro Carvalho Chehab
parent f68afe5d45
commit eb70ac1b1e
1 changed files with 3 additions and 1 deletions
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4
drivers/media/radio/wl128x/fmdrv_v4l2.c
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@ -84,12 +84,14 @@ static ssize_t fm_v4l2_fops_write(struct file *file, const char __user * buf,
ret = copy_from_user(&rds, buf, sizeof(rds));
fmdbg("(%d)type: %d, text %s, af %d\n",
ret, rds.text_type, rds.text, rds.af_freq);
if (ret)
return -EFAULT;
fmdev = video_drvdata(file);
fm_tx_set_radio_text(fmdev, rds.text, rds.text_type);
fm_tx_set_af(fmdev, rds.af_freq);
return 0;
return sizeof(rds);
}
static u32 fm_v4l2_fops_poll(struct file *file, struct poll_table_struct *pts)