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[PATCH 2/3] cciss: bug fix for BIG_PASS_THRU

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Applications using CCISS_BIG_PASSTHRU complained that the data written
was zeros. The problem is that the buffer is being cleared after the
user copy, unless the user copy has failed... Correct that logic.

Signed-off-by: Mike Miller <mike.miller@hp.com>
Signed-off-by: Jens Axboe <axboe@suse.de>
This commit is contained in:
Jens Axboe 2005-11-18 22:02:44 +01:00
parent 7f0d50391a
commit 15534d3803
1 changed files with 4 additions and 3 deletions
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5
drivers/block/cciss.c
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@ -1017,10 +1017,11 @@ static int cciss_ioctl(struct inode *inode, struct file *filep,
status = -ENOMEM;
goto cleanup1;
}
if (ioc->Request.Type.Direction == XFER_WRITE &&
copy_from_user(buff[sg_used], data_ptr, sz)) {
if (ioc->Request.Type.Direction == XFER_WRITE) {
if (copy_from_user(buff[sg_used], data_ptr, sz)) {
status = -ENOMEM;
goto cleanup1;
}
} else {
memset(buff[sg_used], 0, sz);
}