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authorAlexey Khoroshilov <khoroshilov@ispras.ru>2016-03-19 01:35:54 +0300
committerJens Axboe <axboe@fb.com>2016-03-18 18:10:59 -0700
commit5173cb814b36439a9d9537016965e75798b9f130 (patch)
tree3c4111bb8f7e0217bf3e29b755f574045ae7571f
parent29fd20b8e68a4d31a82909265b1e650b7b860f54 (diff)
mtip32xx: fix checks for dma mapping errors
exec_drive_taskfile() checks for dma mapping errors by comparison returned address with zero, while pci_dma_mapping_error() should be used. Found by Linux Driver Verification project (linuxtesting.org). Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru> Signed-off-by: Jens Axboe <axboe@fb.com>
-rw-r--r--drivers/block/mtip32xx/mtip32xx.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/block/mtip32xx/mtip32xx.c b/drivers/block/mtip32xx/mtip32xx.c
index cc2e71d..25824c1 100644
--- a/drivers/block/mtip32xx/mtip32xx.c
+++ b/drivers/block/mtip32xx/mtip32xx.c
@@ -2051,7 +2051,7 @@ static int exec_drive_taskfile(struct driver_data *dd,
outbuf,
taskout,
DMA_TO_DEVICE);
- if (outbuf_dma == 0) {
+ if (pci_dma_mapping_error(dd->pdev, outbuf_dma)) {
err = -ENOMEM;
goto abort;
}
@@ -2068,7 +2068,7 @@ static int exec_drive_taskfile(struct driver_data *dd,
inbuf_dma = pci_map_single(dd->pdev,
inbuf,
taskin, DMA_FROM_DEVICE);
- if (inbuf_dma == 0) {
+ if (pci_dma_mapping_error(dd->pdev, inbuf_dma)) {
err = -ENOMEM;
goto abort;
}