linux-kernel - [RFC PATCH 8/8] SG_IO: get rid of access

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Message-Id: <20191017193925.25539-8-viro@ZenIV.linux.org.uk>
Date:   Thu, 17 Oct 2019 20:39:25 +0100
From:   Al Viro <viro@...IV.linux.org.uk>
To:     linux-scsi@...r.kernel.org
Cc:     Linus Torvalds <torvalds@...ux-foundation.org>,
        linux-kernel@...r.kernel.org, Al Viro <viro@...iv.linux.org.uk>
Subject: [RFC PATCH 8/8] SG_IO: get rid of access_ok()

From: Al Viro <viro@...iv.linux.org.uk>

simply not needed there - neither sg_new_read() nor sg_new_write() need
it.

Signed-off-by: Al Viro <viro@...iv.linux.org.uk>
---
 drivers/scsi/sg.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/drivers/scsi/sg.c b/drivers/scsi/sg.c
index f3d090b93cdf..0940abd91d3c 100644
--- a/drivers/scsi/sg.c
+++ b/drivers/scsi/sg.c
@@ -896,8 +896,6 @@ sg_ioctl(struct file *filp, unsigned int cmd_in, unsigned long arg)
 			return -ENODEV;
 		if (!scsi_block_when_processing_errors(sdp->device))
 			return -ENXIO;
-		if (!access_ok(p, SZ_SG_IO_HDR))
-			return -EFAULT;
 		result = sg_new_write(sfp, filp, p, SZ_SG_IO_HDR,
 				 1, read_only, 1, &srp);
 		if (result < 0)
-- 
2.11.0