Commit 9b4d7b5c authored by Zhen Lei's avatar Zhen Lei Committed by Mauro Carvalho Chehab
Browse files

media: bttv: use DEVICE_ATTR_RO() helper macro 

Use DEVICE_ATTR_RO() helper macro instead of DEVICE_ATTR(), which is
simpler and more readable.

Due to the name of the read function of the sysfs attribute is normalized,
there is a natural association.

Link: https://lore.kernel.org/linux-media/20210603071009.11438-1-thunder.leizhen@huawei.com



Signed-off-by: default avatarZhen Lei <thunder.leizhen@huawei.com>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab+huawei@kernel.org>
parent e67219b0

drivers/media/pci/bt8xx/bttv-driver.c

+2 −2
Original line number Diff line number Diff line
@@ -170,14 +170,14 @@ MODULE_VERSION(BTTV_VERSION); 
/* ----------------------------------------------------------------------- */

/* sysfs                                                                   */



static ssize_t show_card(struct device *cd,

static ssize_t card_show(struct device *cd,

			 struct device_attribute *attr, char *buf)

{

	struct video_device *vfd = to_video_device(cd);

	struct bttv *btv = video_get_drvdata(vfd);

	return sprintf(buf, "%d\n", btv ? btv->c.type : UNSET);

}

static DEVICE_ATTR(card, S_IRUGO, show_card, NULL);

static DEVICE_ATTR_RO(card);



/* ----------------------------------------------------------------------- */

/* dvb auto-load setup                                                     */