Date: Mon, 7 May 2007 04:14:47 +0200
From: Petr Vandrovec <[EMAIL PROTECTED]>
read() always failed with -EFAULT. This was happening due to
raw1394_compat_read copying data to wrong location - access_ok always
failed as 'r' is kernel address, not user. Whole function just tried to
copy data from 'r' to 'r', which is not good.
Signed-off-by: Petr Vandrovec <[EMAIL PROTECTED]>
Acked-by: Dan Dennedy <[EMAIL PROTECTED]>
Signed-off-by: Stefan Richter <[EMAIL PROTECTED]> (split into 3 patches)
---
drivers/ieee1394/raw1394.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
Index: linux-2.6.22-rc1/drivers/ieee1394/raw1394.c
===================================================================
--- linux-2.6.22-rc1.orig/drivers/ieee1394/raw1394.c
+++ linux-2.6.22-rc1/drivers/ieee1394/raw1394.c
@@ -459,7 +459,7 @@ static const char __user *raw1394_compat
static int
raw1394_compat_read(const char __user *buf, struct raw1394_request *r)
{
- struct compat_raw1394_req __user *cr = (typeof(cr)) r;
+ struct compat_raw1394_req __user *cr = (typeof(cr)) buf;
if (!access_ok(VERIFY_WRITE, cr, sizeof(struct compat_raw1394_req)) ||
P(type) ||
P(error) ||
--
Stefan Richter
-=====-=-=== -=-= =----
http://arcgraph.de/sr/
-
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