Check for ide_build_sglist() return value and re-map sg table if necessary.
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@xxxxxxxxx>
---
drivers/ide/icside.c | 4 ++++
1 file changed, 4 insertions(+)
Index: b/drivers/ide/icside.c
===================================================================
--- a/drivers/ide/icside.c
+++ b/drivers/ide/icside.c
@@ -326,6 +326,10 @@ static int icside_dma_setup(ide_drive_t
BUG_ON(dma_channel_active(ec->dma));
hwif->sg_nents = ide_build_sglist(drive, rq);
+ if (hwif->sg_nents == 0) {
+ ide_map_sg(drive, rq);
+ return 1;
+ }
/*
* Ensure that we have the right interrupt routed.
--
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