[PATCH] rtc subsystem: add capability checks

Centralize CAP_SYS_XXX checks to avoid duplicate code and missing checks in
the drivers.

Signed-off-by: Alessandro Zummo <a.zummo@towertech.it>
Cc: Richard Purdie <rpurdie@rpsys.net>
Cc: Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 0 insertions, 8 deletions

diff --git a/drivers/rtc/rtc-vr41xx.c b/drivers/rtc/rtc-vr41xx.c
index 277596c302e3..33e029207e26 100644
--- a/drivers/rtc/rtc-vr41xx.c
+++ b/drivers/rtc/rtc-vr41xx.c
@@ -81,7 +81,6 @@ MODULE_LICENSE("GPL");
 
 #define RTC_FREQUENCY           32768
 #define MAX_PERIODIC_RATE       6553
-#define MAX_USER_PERIODIC_RATE  64
 
 static void __iomem *rtc1_base;
 static void __iomem *rtc2_base;
@@ -240,9 +239,6 @@ static int vr41xx_rtc_ioctl(struct device *dev, unsigned int cmd, unsigned long
                 if (arg > MAX_PERIODIC_RATE)
                         return -EINVAL;
 
-                if (arg > MAX_USER_PERIODIC_RATE && capable(CAP_SYS_RESOURCE) == 0)
-                        return -EACCES;
-
                 periodic_frequency = arg;
 
                 count = RTC_FREQUENCY;
@@ -263,10 +259,6 @@ static int vr41xx_rtc_ioctl(struct device *dev, unsigned int cmd, unsigned long
                 /* Doesn't support before 1900 */
                 if (arg < 1900)
                         return -EINVAL;
-
-                if (capable(CAP_SYS_TIME) == 0)
-                        return -EACCES;
-
                 epoch = arg;
                 break;
         default: