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authorBartlomiej Zolnierkiewicz <bzolnier@gmail.com>2009-03-27 12:46:32 +0100
committerBartlomiej Zolnierkiewicz <bzolnier@gmail.com>2009-03-27 12:46:32 +0100
commitf7ef12482b17a015906cf74afe655e691b5fa2cb (patch)
tree9a10f00f8bca32d1c7300fca2ee3642d2a85251b
parent39375853d77bea48b7b334daa3698277af8d33f4 (diff)
icside: icside_dma_setup() fixes
Check for ide_build_sglist() return value and re-map sg table if necessary. Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
-rw-r--r--drivers/ide/icside.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/ide/icside.c b/drivers/ide/icside.c
index 0cf47e6e979..cf0522f937c 100644
--- a/drivers/ide/icside.c
+++ b/drivers/ide/icside.c
@@ -326,6 +326,10 @@ static int icside_dma_setup(ide_drive_t *drive)
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.