From 522a5f1430bb85ca00928b99caf3892023ad9632 Mon Sep 17 00:00:00 2001 From: Trent Piepho Date: Wed, 4 Mar 2009 01:21:03 -0300 Subject: [PATCH] V4L/DVB (10815): bttv: Don't need to zero ioctl parameter fields The v4l2 core code in v4l2_ioctl will zero out the structure the driver is supposed to fill in for read-only ioctls. For read/write ioctls, all the fields which aren't supplied from userspace will be zeroed out. Zeroing code is removed from enum_input and g_tuner. Signed-off-by: Trent Piepho Signed-off-by: Mauro Carvalho Chehab --- drivers/media/video/bt8xx/bttv-driver.c | 11 ++--------- 1 file changed, 2 insertions(+), 9 deletions(-) diff --git a/drivers/media/video/bt8xx/bttv-driver.c b/drivers/media/video/bt8xx/bttv-driver.c index 1f606d816a58..b5fc3cc61888 100644 --- a/drivers/media/video/bt8xx/bttv-driver.c +++ b/drivers/media/video/bt8xx/bttv-driver.c @@ -1894,16 +1894,11 @@ static int bttv_enum_input(struct file *file, void *priv, { struct bttv_fh *fh = priv; struct bttv *btv = fh->btv; - unsigned int n; + int n; - n = i->index; - - if (n >= bttv_tvcards[btv->c.type].video_inputs) + if (i->index >= bttv_tvcards[btv->c.type].video_inputs) return -EINVAL; - memset(i, 0, sizeof(*i)); - - i->index = n; i->type = V4L2_INPUT_TYPE_CAMERA; i->audioset = 1; @@ -2952,7 +2947,6 @@ static int bttv_g_tuner(struct file *file, void *priv, return -EINVAL; mutex_lock(&btv->lock); - memset(t, 0, sizeof(*t)); t->rxsubchans = V4L2_TUNER_SUB_MONO; bttv_call_i2c_clients(btv, VIDIOC_G_TUNER, t); strcpy(t->name, "Television"); @@ -3495,7 +3489,6 @@ static int radio_g_tuner(struct file *file, void *priv, struct v4l2_tuner *t) if (0 != t->index) return -EINVAL; mutex_lock(&btv->lock); - memset(t, 0, sizeof(*t)); strcpy(t->name, "Radio"); t->type = V4L2_TUNER_RADIO;