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powerpc/ps3: use dma_mapping_error()

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The DMA address returned by dma_map_single() should be checked with
dma_mapping_error(). Fix the ps3stor_setup() function accordingly.

Fixes: 80071802cb ("[POWERPC] PS3: Storage Driver Core")
Signed-off-by: Vincent Stehlé <vincent.stehle@laposte.net>
Reviewed-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20201213182622.23047-1-vincent.stehle@laposte.net
This commit is contained in:
Vincent Stehlé 2020-12-13 19:26:22 +01:00 committed by Michael Ellerman
parent 328e7e487a
commit d0edaa28a1
1 changed files with 1 additions and 1 deletions
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2
drivers/ps3/ps3stor_lib.c
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@ -189,7 +189,7 @@ int ps3stor_setup(struct ps3_storage_device *dev, irq_handler_t handler)
dev->bounce_lpar = ps3_mm_phys_to_lpar(__pa(dev->bounce_buf)); dev->bounce_lpar = ps3_mm_phys_to_lpar(__pa(dev->bounce_buf));
dev->bounce_dma = dma_map_single(&dev->sbd.core, dev->bounce_buf, dev->bounce_dma = dma_map_single(&dev->sbd.core, dev->bounce_buf,
dev->bounce_size, DMA_BIDIRECTIONAL); dev->bounce_size, DMA_BIDIRECTIONAL);
if (!dev->bounce_dma) { if (dma_mapping_error(&dev->sbd.core, dev->bounce_dma)) {
dev_err(&dev->sbd.core, "%s:%u: map DMA region failed\n", dev_err(&dev->sbd.core, "%s:%u: map DMA region failed\n",
__func__, __LINE__); __func__, __LINE__);
error = -ENODEV; error = -ENODEV;