[PATCH RFC 32/51] DMA-API: mmc: sdhci-acpi: use dma_coerce_mask_and_coherent()

Russell King
2013-08-01T22:06:39Z

The code sequence:
dev->dma_mask = &dev->coherent_dma_mask;
dev->coherent_dma_mask = dma_mask;
bypasses the architectures check on the DMA mask. It can be replaced
with dma_coerce_mask_and_coherent(), avoiding the direct initialization
of this mask.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
---
drivers/mmc/host/sdhci-acpi.c | 5 +++--
1 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/mmc/host/sdhci-acpi.c b/drivers/mmc/host/sdhci-acpi.c
index cdd4ce0..ef19874 100644
--- a/drivers/mmc/host/sdhci-acpi.c
+++ b/drivers/mmc/host/sdhci-acpi.c
@@ -310,8 +310,9 @@ static int sdhci_acpi_probe(struct platform_device *pdev)
dma_mask = DMA_BIT_MASK(32);
}

- dev->dma_mask = &dev->coherent_dma_mask;
- dev->coherent_dma_mask = dma_mask;
+ err = dma_coerce_mask_and_coherent(dev, dma_mask);
+ if (err)
+ goto err_free;
}

if (c->slot) {
--
1.7.4.4