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Subject[PATCH] mtip32xx: fix checks for dma mapping errors
Date
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>
---
drivers/block/mtip32xx/mtip32xx.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/block/mtip32xx/mtip32xx.c b/drivers/block/mtip32xx/mtip32xx.c
index 9b180dbbd03c..06390f2a7d85 100644
--- a/drivers/block/mtip32xx/mtip32xx.c
+++ b/drivers/block/mtip32xx/mtip32xx.c
@@ -2039,7 +2039,7 @@ 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;
}
@@ -2056,7 +2056,7 @@ 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;
}
--
1.9.1
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