From: Andreas Schwab <schwab@suse.de>
Date: Tue, 8 May 2007 07:31:38 +0000 (-0700)
Subject: Fix error handling in HDIO_GETGEO compat wrapper
X-Git-Tag: firefly_0821_release~29760
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=83ae1b79c898838e16ac8cde69b39d22d36fb035;p=firefly-linux-kernel-4.4.55.git

Fix error handling in HDIO_GETGEO compat wrapper

Don't clobber error from sys_ioctl in HDIO_GETGEO compat wrapper.

Signed-off-by: Andreas Schwab <schwab@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

diff --git a/fs/compat_ioctl.c b/fs/compat_ioctl.c
index 6972d242fbdf..d92bc3eb7afc 100644
--- a/fs/compat_ioctl.c
+++ b/fs/compat_ioctl.c
@@ -684,8 +684,10 @@ static int hdio_getgeo(unsigned int fd, unsigned int cmd, unsigned long arg)
 	if (!err) {
 		err = copy_to_user (ugeo, &geo, 4);
 		err |= __put_user (geo.start, &ugeo->start);
+		if (err)
+			err = -EFAULT;
 	}
-	return err ? -EFAULT : 0;
+	return err;
 }
 
 static int hdio_ioctl_trans(unsigned int fd, unsigned int cmd, unsigned long arg)