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| author | Atsushi Nemoto <anemo@mba.ocn.ne.jp> | 2006-05-01 12:16:17 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-05-01 18:17:47 -0700 |
| commit | f3537ea7b9c2f10397a8b68cd006981d7c615431 (patch) | |
| tree | 4aedb112b5e39c09238f533804fc35996c58eeb0 /drivers/char/genrtc.c | |
| parent | 3418ff76119da52f808eb496191d1fd380f53f3d (diff) | |
| download | linux-3.10-f3537ea7b9c2f10397a8b68cd006981d7c615431.tar.gz linux-3.10-f3537ea7b9c2f10397a8b68cd006981d7c615431.tar.bz2 linux-3.10-f3537ea7b9c2f10397a8b68cd006981d7c615431.zip | |
[PATCH] genrtc: fix read on 64-bit platforms
Fix genrtc's read() routine for 64-bit platforms. Current gen_rtc_read()
stores 64bit integer and returns 8 even if an user tried to read a 32bit
integer.
Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'drivers/char/genrtc.c')
| -rw-r--r-- | drivers/char/genrtc.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/drivers/char/genrtc.c b/drivers/char/genrtc.c index d3a2bc36129..588fca542a9 100644 --- a/drivers/char/genrtc.c +++ b/drivers/char/genrtc.c @@ -200,13 +200,13 @@ static ssize_t gen_rtc_read(struct file *file, char __user *buf, /* first test allows optimizer to nuke this case for 32-bit machines */ if (sizeof (int) != sizeof (long) && count == sizeof (unsigned int)) { unsigned int uidata = data; - retval = put_user(uidata, (unsigned long __user *)buf); + retval = put_user(uidata, (unsigned int __user *)buf) ?: + sizeof(unsigned int); } else { - retval = put_user(data, (unsigned long __user *)buf); + retval = put_user(data, (unsigned long __user *)buf) ?: + sizeof(unsigned long); } - if (!retval) - retval = sizeof(unsigned long); out: current->state = TASK_RUNNING; remove_wait_queue(&gen_rtc_wait, &wait); |