Merge tag 'fbdev-v4.13-rc5' of git://github.com/bzolnier/linux

[karo-tx-linux.git] / drivers / scsi / sg.c

diff --git a/drivers/scsi/sg.c b/drivers/scsi/sg.c
index 1e82d4128a84800d3f96011c49e0b3fc12c55d8e..d7ff71e0c85c6ecd525d0d59d3f3f0da63952b47 100644 (file)
--- a/drivers/scsi/sg.c
+++ b/drivers/scsi/sg.c
@@ -751,32 +751,6 @@ sg_new_write(Sg_fd *sfp, struct file *file, const char __user *buf,
        return count;
 }
 
-static bool sg_is_valid_dxfer(sg_io_hdr_t *hp)
-{
-       switch (hp->dxfer_direction) {
-       case SG_DXFER_NONE:
-               if (hp->dxferp || hp->dxfer_len > 0)
-                       return false;
-               return true;
-       case SG_DXFER_FROM_DEV:
-               if (hp->dxfer_len < 0)
-                       return false;
-               return true;
-       case SG_DXFER_TO_DEV:
-       case SG_DXFER_TO_FROM_DEV:
-               if (!hp->dxferp || hp->dxfer_len == 0)
-                       return false;
-               return true;
-       case SG_DXFER_UNKNOWN:
-               if ((!hp->dxferp && hp->dxfer_len) ||
-                   (hp->dxferp && hp->dxfer_len == 0))
-                       return false;
-               return true;
-       default:
-               return false;
-       }
-}
-
 static int
 sg_common_write(Sg_fd * sfp, Sg_request * srp,
                unsigned char *cmnd, int timeout, int blocking)
@@ -797,7 +771,7 @@ sg_common_write(Sg_fd * sfp, Sg_request * srp,
                        "sg_common_write:  scsi opcode=0x%02x, cmd_size=%d\n",
                        (int) cmnd[0], (int) hp->cmd_len));
 
-       if (!sg_is_valid_dxfer(hp))
+       if (hp->dxfer_len >= SZ_256M)
                return -EINVAL;
 
        k = sg_start_req(srp, cmnd);