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path: root/drivers/rtc/rtc-vr41xx.c
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Diffstat (limited to 'drivers/rtc/rtc-vr41xx.c')
-rw-r--r--drivers/rtc/rtc-vr41xx.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/rtc/rtc-vr41xx.c b/drivers/rtc/rtc-vr41xx.c
index c75230562c0d..c3671043ace7 100644
--- a/drivers/rtc/rtc-vr41xx.c
+++ b/drivers/rtc/rtc-vr41xx.c
@@ -4,6 +4,7 @@
*
* Copyright (C) 2003-2008 Yoichi Yuasa <yuasa@linux-mips.org>
*/
+#include <linux/compat.h>
#include <linux/err.h>
#include <linux/fs.h>
#include <linux/init.h>
@@ -66,6 +67,9 @@ static void __iomem *rtc2_base;
#define rtc2_read(offset) readw(rtc2_base + (offset))
#define rtc2_write(offset, value) writew((value), rtc2_base + (offset))
+/* 32-bit compat for ioctls that nobody else uses */
+#define RTC_EPOCH_READ32 _IOR('p', 0x0d, __u32)
+
static unsigned long epoch = 1970; /* Jan 1 1970 00:00:00 */
static DEFINE_SPINLOCK(rtc_lock);
@@ -179,6 +183,10 @@ static int vr41xx_rtc_ioctl(struct device *dev, unsigned int cmd, unsigned long
switch (cmd) {
case RTC_EPOCH_READ:
return put_user(epoch, (unsigned long __user *)arg);
+#ifdef CONFIG_64BIT
+ case RTC_EPOCH_READ32:
+ return put_user(epoch, (unsigned int __user *)arg);
+#endif
case RTC_EPOCH_SET:
/* Doesn't support before 1900 */
if (arg < 1900)