From: Vincent Stehlé vincent.stehle@laposte.net
[ Upstream commit d0edaa28a1f7830997131cbce87b6c52472825d1 ]
The DMA address returned by dma_map_single() should be checked with dma_mapping_error(). Fix the ps3stor_setup() function accordingly.
Fixes: 80071802cb9c ("[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 Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/ps3/ps3stor_lib.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/ps3/ps3stor_lib.c b/drivers/ps3/ps3stor_lib.c index 8c3f5adf1bc65..2d76183756626 100644 --- a/drivers/ps3/ps3stor_lib.c +++ b/drivers/ps3/ps3stor_lib.c @@ -201,7 +201,7 @@ 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_dma = dma_map_single(&dev->sbd.core, dev->bounce_buf, 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", __func__, __LINE__); error = -ENODEV;