Commit d38e0e3f authored by Colin Cross's avatar Colin Cross Committed by Greg Kroah-Hartman

Revert "Staging: Android alarm: IOCTL command encoding fix"

Commit 6bd4a5d9 changed the
ANDROID_ALARM_GET_TIME ioctls from IOW to IOR.  While technically
correct, the _IOC_DIR bits are ignored by alarm_ioctl, so the
commit breaks a userspace ABI used by all existing Android devices
for a purely cosmetic reason.  Revert it.

Cc: stable <stable@vger.kernel.org>
Cc: Dae S. Kim <dae@velatum.com>
Signed-off-by: default avatarColin Cross <ccross@android.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 77b67063
...@@ -51,12 +51,10 @@ enum android_alarm_return_flags { ...@@ -51,12 +51,10 @@ enum android_alarm_return_flags {
#define ANDROID_ALARM_WAIT _IO('a', 1) #define ANDROID_ALARM_WAIT _IO('a', 1)
#define ALARM_IOW(c, type, size) _IOW('a', (c) | ((type) << 4), size) #define ALARM_IOW(c, type, size) _IOW('a', (c) | ((type) << 4), size)
#define ALARM_IOR(c, type, size) _IOR('a', (c) | ((type) << 4), size)
/* Set alarm */ /* Set alarm */
#define ANDROID_ALARM_SET(type) ALARM_IOW(2, type, struct timespec) #define ANDROID_ALARM_SET(type) ALARM_IOW(2, type, struct timespec)
#define ANDROID_ALARM_SET_AND_WAIT(type) ALARM_IOW(3, type, struct timespec) #define ANDROID_ALARM_SET_AND_WAIT(type) ALARM_IOW(3, type, struct timespec)
#define ANDROID_ALARM_GET_TIME(type) ALARM_IOR(4, type, struct timespec) #define ANDROID_ALARM_GET_TIME(type) ALARM_IOW(4, type, struct timespec)
#define ANDROID_ALARM_SET_RTC _IOW('a', 5, struct timespec) #define ANDROID_ALARM_SET_RTC _IOW('a', 5, struct timespec)
#define ANDROID_ALARM_BASE_CMD(cmd) (cmd & ~(_IOC(0, 0, 0xf0, 0))) #define ANDROID_ALARM_BASE_CMD(cmd) (cmd & ~(_IOC(0, 0, 0xf0, 0)))
#define ANDROID_ALARM_IOCTL_TO_TYPE(cmd) (_IOC_NR(cmd) >> 4) #define ANDROID_ALARM_IOCTL_TO_TYPE(cmd) (_IOC_NR(cmd) >> 4)
......
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