powerpc/ps3: use dma_mapping_error()

The DMA address returned by dma_map_single() should be checked with dma_mapping_error(). Fix the ps3stor_setup() function accordingly. Fixes: 8007180 ("[POWERPC] PS3: Storage Driver Core") Signed-off-by: Vincent Stehlé <[email protected]> Reviewed-by: Geert Uytterhoeven <[email protected]> Signed-off-by: Michael Ellerman <[email protected]> Link: https://lore.kernel.org/r/[email protected]
niw · Dec 15, 2020 · d0edaa2 · d0edaa2
1 parent 328e7e4
commit d0edaa2
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/drivers/ps3/ps3stor_lib.c b/drivers/ps3/ps3stor_lib.c
@@ -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_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;