scsi: sg: sg_ioctl(): get rid of access_ok()

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

Link: https://lore.kernel.org/r/20191017193925.25539-8-viro@ZenIV.linux.org.uk
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Acked-by: Douglas Gilbert <dgilbert@interlog.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

diff --git a/drivers/scsi/sg.c b/drivers/scsi/sg.c
index f3d090b..0940abd 100644 (file)
--- 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)