The patch titled
RTC: rtc-dev tweak for 64-bit kernel
has been removed from the -mm tree. Its filename is
rtc-rtc-dev-tweak-for-64-bit-kernel.patch
This patch was probably dropped from -mm because
it has now been merged into a subsystem tree or
into Linus's tree, or because it was folded into
its parent patch in the -mm tree.
From: Atsushi Nemoto <anemo@xxxxxxxxxxxxx>
Make rtc-dev work well on 64-bit platforms with 32-bit userland. On those
platforms, users might try to read 32-bit integer value. This patch make
rtc-dev's read() work well for both "int" and "long" size. This tweak is came
from genrtc driver.
Signed-off-by: Atsushi Nemoto <anemo@xxxxxxxxxxxxx>
Cc: Alessandro Zummo <a.zummo@xxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxx>
---
drivers/rtc/rtc-dev.c | 15 ++++++++++-----
1 files changed, 10 insertions(+), 5 deletions(-)
diff -puN drivers/rtc/rtc-dev.c~rtc-rtc-dev-tweak-for-64-bit-kernel drivers/rtc/rtc-dev.c
--- devel/drivers/rtc/rtc-dev.c~rtc-rtc-dev-tweak-for-64-bit-kernel 2006-05-01 12:15:34.000000000 -0700
+++ devel-akpm/drivers/rtc/rtc-dev.c 2006-05-01 12:15:34.000000000 -0700
@@ -58,7 +58,7 @@ rtc_dev_read(struct file *file, char __u
unsigned long data;
ssize_t ret;
- if (count < sizeof(unsigned long))
+ if (count != sizeof(unsigned int) && count < sizeof(unsigned long))
return -EINVAL;
add_wait_queue(&rtc->irq_queue, &wait);
@@ -90,11 +90,16 @@ rtc_dev_read(struct file *file, char __u
if (ret == 0) {
/* Check for any data updates */
if (rtc->ops->read_callback)
- data = rtc->ops->read_callback(rtc->class_dev.dev, data);
+ data = rtc->ops->read_callback(rtc->class_dev.dev,
+ data);
- ret = put_user(data, (unsigned long __user *)buf);
- if (ret == 0)
- ret = sizeof(unsigned long);
+ if (sizeof(int) != sizeof(long) &&
+ count == sizeof(unsigned int))
+ ret = put_user(data, (unsigned int __user *)buf) ?:
+ sizeof(unsigned int);
+ else
+ ret = put_user(data, (unsigned long __user *)buf) ?:
+ sizeof(unsigned long);
}
return ret;
}
_
Patches currently in -mm which might be from anemo@xxxxxxxxxxxxx are
origin.patch
git-kbuild.patch
git-cryptodev.patch
-
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