drivers/video/backlight/lp855x_bl.c: use PAGE_SIZE for the sysfs read operation
sysfs allocates PAGE_SIZE. It is used by each R/W operation method. Use
it instead of another buffer size.
Signed-off-by: Milo(Woogyom) Kim <milo.kim@ti.com>
Acked-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/drivers/video/backlight/lp855x_bl.c b/drivers/video/backlight/lp855x_bl.c
index 20111ef..c98bdbf 100644
--- a/drivers/video/backlight/lp855x_bl.c
+++ b/drivers/video/backlight/lp855x_bl.c
@@ -35,7 +35,6 @@
#define LP8557_EPROM_START 0x10
#define LP8557_EPROM_END 0x1E
-#define BUF_SIZE 20
#define DEFAULT_BL_NAME "lcd-backlight"
#define MAX_BRIGHTNESS 255
@@ -304,7 +303,7 @@
struct device_attribute *attr, char *buf)
{
struct lp855x *lp = dev_get_drvdata(dev);
- return scnprintf(buf, BUF_SIZE, "%s\n", lp->chipname);
+ return scnprintf(buf, PAGE_SIZE, "%s\n", lp->chipname);
}
static ssize_t lp855x_get_bl_ctl_mode(struct device *dev,
@@ -319,7 +318,7 @@
else if (mode == REGISTER_BASED)
strmode = "register based";
- return scnprintf(buf, BUF_SIZE, "%s\n", strmode);
+ return scnprintf(buf, PAGE_SIZE, "%s\n", strmode);
}
static DEVICE_ATTR(chip_id, S_IRUGO, lp855x_get_chip_id, NULL);