Calling dma_set_mask_and_coherent without checking return value.
This was caught by coverity scan.
Fix this by check the return value, and give a warning if get a
false.
Signed-off-by: Haibo Chen <haibo.chen@xxxxxxx>
---
drivers/mmc/host/sdhci-of-esdhc.c | 9 +++++++--
1 file changed, 7 insertions(+), 2 deletions(-)
diff --git a/drivers/mmc/host/sdhci-of-esdhc.c b/drivers/mmc/host/sdhci-of-esdhc.c
index 86fc9f0..bfba630 100644
--- a/drivers/mmc/host/sdhci-of-esdhc.c
+++ b/drivers/mmc/host/sdhci-of-esdhc.c
@@ -478,8 +478,13 @@ static int esdhc_of_enable_dma(struct sdhci_host *host)
struct device *dev = mmc_dev(host->mmc);
if (of_device_is_compatible(dev->of_node, "fsl,ls1043a-esdhc") ||
- of_device_is_compatible(dev->of_node, "fsl,ls1046a-esdhc"))
- dma_set_mask_and_coherent(dev, DMA_BIT_MASK(40));
+ of_device_is_compatible(dev->of_node, "fsl,ls1046a-esdhc")) {
+ ret = dma_set_mask_and_coherent(dev, DMA_BIT_MASK(40));
+ if (ret) {
+ pr_warn("%s: Failed to set 40-bit DMA mask.\n",
+ mmc_hostname(host->mmc));
+ }
+ }
value = sdhci_readl(host, ESDHC_DMA_SYSCTL);
value |= ESDHC_DMA_SNOOP;
--
1.9.1
