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authorAlexey Zaytsev <alexey.zaytsev@gmail.com>2009-06-10 12:56:56 -0700
committerJames Bottomley <James.Bottomley@HansenPartnership.com>2009-06-15 10:09:30 -0500
commitdf59c0ad05182329688e514e5a9c3836fa208ea3 (patch)
treebc46408a925f85eabccc979b84ac3dd7559cf0e7 /fs
parentdc577d554a274b79a6ad05e9e1ac20c320200599 (diff)
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op-kernel-dev-df59c0ad05182329688e514e5a9c3836fa208ea3.tar.gz
[SCSI] compat: don't perform unneeded copy in sg_io code
The members from 'status' in struct sg_io_hdr to the last are used to transfer information from kernel to user space. The values that user space sets are just ignored. Signed-off-by: Alexey Zaytsev <alexey.zaytsev@gmail.com> Acked-by: Jens Axboe <jens.axboe@oracle.com> Acked-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Diffstat (limited to 'fs')
-rw-r--r--fs/compat_ioctl.c6
1 files changed, 0 insertions, 6 deletions
diff --git a/fs/compat_ioctl.c b/fs/compat_ioctl.c
index b83f6bc..905523c 100644
--- a/fs/compat_ioctl.c
+++ b/fs/compat_ioctl.c
@@ -788,12 +788,6 @@ static int sg_ioctl_trans(unsigned int fd, unsigned int cmd, unsigned long arg)
if (put_user(compat_ptr(data), &sgio->usr_ptr))
return -EFAULT;
- if (copy_in_user(&sgio->status, &sgio32->status,
- (4 * sizeof(unsigned char)) +
- (2 * sizeof(unsigned short)) +
- (3 * sizeof(int))))
- return -EFAULT;
-
err = sys_ioctl(fd, cmd, (unsigned long) sgio);
if (err >= 0) {
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