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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>
hifive-unleashed-5.1
Alexey Khoroshilov 2016-03-19 01:35:54 +03:00 committed by Jens Axboe
parent 29fd20b8e6
commit 5173cb814b
1 changed files with 2 additions and 2 deletions
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4
drivers/block/mtip32xx/mtip32xx.c
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@ -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;
}