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mfd: wm831x: Use DEVICE_ATTR_RO macro

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Use DEVICE_ATTR_RO macro helper instead of plain DEVICE_ATTR, which makes
the code a bit shorter and easier to read.

Signed-off-by: Zhen Lei <thunder.leizhen@huawei.com>
Acked-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
This commit is contained in:
Zhen Lei 2021-06-02 19:43:31 +08:00 committed by Lee Jones
parent 3da286aa4a
commit 981ce06ab8
1 changed files with 3 additions and 3 deletions
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6
drivers/mfd/wm831x-otp.c
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@ -38,8 +38,8 @@ static int wm831x_unique_id_read(struct wm831x *wm831x, char *id)
return 0; return 0;
} }
static ssize_t wm831x_unique_id_show(struct device *dev, static ssize_t unique_id_show(struct device *dev,
struct device_attribute *attr, char *buf) struct device_attribute *attr, char *buf)
{ {
struct wm831x *wm831x = dev_get_drvdata(dev); struct wm831x *wm831x = dev_get_drvdata(dev);
int rval; int rval;
@ -52,7 +52,7 @@ static ssize_t wm831x_unique_id_show(struct device *dev,
return sprintf(buf, "%*phN\n", WM831X_UNIQUE_ID_LEN, id); return sprintf(buf, "%*phN\n", WM831X_UNIQUE_ID_LEN, id);
} }
static DEVICE_ATTR(unique_id, 0444, wm831x_unique_id_show, NULL); static DEVICE_ATTR_RO(unique_id);
int wm831x_otp_init(struct wm831x *wm831x) int wm831x_otp_init(struct wm831x *wm831x)
{ {