A-Team_Digital_Solutions/android_kernel_motorola_sm6375
Watch
2
0
Fork
You've already forked android_kernel_motorola_sm6375
 0
mirror of https://github.com/BobTheBlinker/android_kernel_motorola_sm6375.git synced 2026-10-29 03:01:39 -04:00
Code Issues Projects Releases Packages Wiki Activity

scsi: sg: fix SG_DXFER_FROM_DEV transfers

Browse source 
SG_DXFER_FROM_DEV transfers do not necessarily have a dxferp as we set
it to NULL for the old sg_io read/write interface, but must have a
length bigger than 0. This fixes a regression introduced by commit
28676d869b ("scsi: sg: check for valid direction before starting the
request")

Signed-off-by: Johannes Thumshirn <[email protected]>
Fixes: 28676d869b ("scsi: sg: check for valid direction before starting the request")
Reported-by: Chris Clayton <[email protected]>
Tested-by: Chris Clayton <[email protected]>
Cc: Douglas Gilbert <[email protected]>
Reviewed-by: Hannes Reinecke <[email protected]>
Tested-by: Chris Clayton <[email protected]>
Acked-by: Douglas Gilbert <[email protected]>
Signed-off-by: Martin K. Petersen <[email protected]>
This commit is contained in:
Johannes Thumshirn 2017-07-07 10:56:38 +02:00 • committed by Martin K. Petersen
commit 68c59fcea1
1 changed files with 4 additions and 1 deletions
Download patch file Download diff file Expand all files Collapse all files

5
drivers/scsi/sg.c
View file

@ -758,8 +758,11 @@ static bool sg_is_valid_dxfer(sg_io_hdr_t *hp)
if (hp->dxferp || hp->dxfer_len > 0)
return false;
return true;
case SG_DXFER_TO_DEV:
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;