rtc: sysfs: fix a cast removing the const attribute

The char pointer buf_ptr is assigned an address from a const char
pointer buf (parameter of wakealarm_store).
The data pointer by buf_ptr is never modified.
So casting it to a (char *) is useless.

This patch remove this cast, and transform buf_ptr to a const char pointer.

Signed-off-by: LABBE Corentin <clabbe.montjoie@gmail.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>

diff --git a/drivers/rtc/rtc-sysfs.c b/drivers/rtc/rtc-sysfs.c
index 63b9fb1318c2ae905db045458eb7e42ae4ae3338..1218d5d4224ddae32c28be3b4977a597120027f0 100644 (file)
--- a/drivers/rtc/rtc-sysfs.c
+++ b/drivers/rtc/rtc-sysfs.c
@@ -160,7 +160,7 @@ wakealarm_store(struct device *dev, struct device_attribute *attr,
        unsigned long push = 0;
        struct rtc_wkalrm alm;
        struct rtc_device *rtc = to_rtc_device(dev);
-       char *buf_ptr;
+       const char *buf_ptr;
        int adjust = 0;
 
        /* Only request alarms that trigger in the future.  Disable them
@@ -171,7 +171,7 @@ wakealarm_store(struct device *dev, struct device_attribute *attr,
                return retval;
        rtc_tm_to_time(&alm.time, &now);
 
-       buf_ptr = (char *)buf;
+       buf_ptr = buf;
        if (*buf_ptr == '+') {
                buf_ptr++;
                if (*buf_ptr == '=') {