From: Jiasheng Jiang <jiasheng@iscas.ac.cn>
To: adrian.hunter@intel.com, ulf.hansson@linaro.org
Cc: linux-mmc@vger.kernel.org, linux-kernel@vger.kernel.org,
Jiasheng Jiang <jiasheng@iscas.ac.cn>
Subject: [PATCH v2] mmc: sdhci-of-esdhc: Check for error num after setting mask
Date: Wed, 12 Jan 2022 16:31:56 +0800 [thread overview]
Message-ID: <20220112083156.1124782-1-jiasheng@iscas.ac.cn> (raw)
Because of the possible failure of the dma_supported(), the
dma_set_mask_and_coherent() may return error num.
Therefore, it should be better to check it and return the error if
fails.
And since the sdhci_setup_host() has already checked the return value of
the enable_dma, we need not check it in sdhci_resume_host() again.
Fixes: 5552d7ad596c ("mmc: sdhci-of-esdhc: set proper dma mask for ls104x chips")
Signed-off-by: Jiasheng Jiang <jiasheng@iscas.ac.cn>
---
Changelog
v1 -> v2
* Change 1. Remove the change of esdhc_of_resume and refine the commit
* message.
---
drivers/mmc/host/sdhci-of-esdhc.c | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)
diff --git a/drivers/mmc/host/sdhci-of-esdhc.c b/drivers/mmc/host/sdhci-of-esdhc.c
index a593b1fbd69e..0f3658b36513 100644
--- a/drivers/mmc/host/sdhci-of-esdhc.c
+++ b/drivers/mmc/host/sdhci-of-esdhc.c
@@ -524,12 +524,16 @@ static void esdhc_of_adma_workaround(struct sdhci_host *host, u32 intmask)
static int esdhc_of_enable_dma(struct sdhci_host *host)
{
+ int ret;
u32 value;
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)
+ return ret;
+ }
value = sdhci_readl(host, ESDHC_DMA_SYSCTL);
--
2.25.1
next reply other threads:[~2022-01-12 8:32 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-01-12 8:31 Jiasheng Jiang [this message]
2022-01-12 9:10 ` [PATCH v2] mmc: sdhci-of-esdhc: Check for error num after setting mask Adrian Hunter
2022-01-21 14:31 ` Ulf Hansson
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