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path: root/drivers/block/ub.c
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Diffstat (limited to 'drivers/block/ub.c')
-rw-r--r--drivers/block/ub.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/block/ub.c b/drivers/block/ub.c
index f32781cff456..e67bbae9547d 100644
--- a/drivers/block/ub.c
+++ b/drivers/block/ub.c
@@ -781,8 +781,10 @@ static void ub_rw_cmd_done(struct ub_dev *sc, struct ub_scsi_cmd *cmd)
if (cmd->error == 0) {
if (blk_pc_request(rq)) {
- if (cmd->act_len < blk_rq_bytes(rq))
- rq->resid_len = blk_rq_bytes(rq) - cmd->act_len;
+ if (cmd->act_len >= rq->resid_len)
+ rq->resid_len = 0;
+ else
+ rq->resid_len -= cmd->act_len;
scsi_status = 0;
} else {
if (cmd->act_len != cmd->len) {