From: Dan Carpenter Date: Wed, 24 Nov 2010 05:36:57 +0000 (-0300) Subject: [media] saa7164: poll mask set incorrectly X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=061d55eb450102408289599ae79b92322d6126e1;p=linux-beck.git [media] saa7164: poll mask set incorrectly list_first_entry() always returns non-null here. I think the intent was to test whether there were any entries in the used list. Signed-off-by: Dan Carpenter Cc: Steven Toth Signed-off-by: Mauro Carvalho Chehab --- diff --git a/drivers/media/video/saa7164/saa7164-encoder.c b/drivers/media/video/saa7164/saa7164-encoder.c index 400364569c8d..2fd38a01887f 100644 --- a/drivers/media/video/saa7164/saa7164-encoder.c +++ b/drivers/media/video/saa7164/saa7164-encoder.c @@ -1246,7 +1246,6 @@ static unsigned int fops_poll(struct file *file, poll_table *wait) struct saa7164_encoder_fh *fh = (struct saa7164_encoder_fh *)file->private_data; struct saa7164_port *port = fh->port; - struct saa7164_user_buffer *ubuf; unsigned int mask = 0; port->last_poll_msecs_diff = port->last_poll_msecs; @@ -1278,10 +1277,7 @@ static unsigned int fops_poll(struct file *file, poll_table *wait) } /* Pull the first buffer from the used list */ - ubuf = list_first_entry(&port->list_buf_used.list, - struct saa7164_user_buffer, list); - - if (ubuf) + if (!list_empty(&port->list_buf_used.list)) mask |= POLLIN | POLLRDNORM; return mask; diff --git a/drivers/media/video/saa7164/saa7164-vbi.c b/drivers/media/video/saa7164/saa7164-vbi.c index bc1fcedba874..e2e034158718 100644 --- a/drivers/media/video/saa7164/saa7164-vbi.c +++ b/drivers/media/video/saa7164/saa7164-vbi.c @@ -1192,7 +1192,6 @@ static unsigned int fops_poll(struct file *file, poll_table *wait) { struct saa7164_vbi_fh *fh = (struct saa7164_vbi_fh *)file->private_data; struct saa7164_port *port = fh->port; - struct saa7164_user_buffer *ubuf; unsigned int mask = 0; port->last_poll_msecs_diff = port->last_poll_msecs; @@ -1224,10 +1223,7 @@ static unsigned int fops_poll(struct file *file, poll_table *wait) } /* Pull the first buffer from the used list */ - ubuf = list_first_entry(&port->list_buf_used.list, - struct saa7164_user_buffer, list); - - if (ubuf) + if (!list_empty(&port->list_buf_used.list)) mask |= POLLIN | POLLRDNORM; return mask;