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mmc: sdhci-sprd: Set the missing MMC_CAP_WAIT_WHILE_BUSY flag

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The Spreadtrum host controller supports HW busy detection for commands with
R1B responses, but also for I/O operations. This means when the host gets a
transfer complete event, that always indicates the busy signal is released.

Let's inform the mmc core about this, via setting the corresponding
MMC_CAP_WAIT_WHILE_BUSY flag, as to remove some redundant software busy
polling.

Signed-off-by: Baolin Wang <baolin.wang7@gmail.com>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Link: https://lore.kernel.org/r/96f16647f6a6e8cb058c44e46c61b122df027059.1582535202.git.baolin.wang7@gmail.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This commit is contained in:
Baolin Wang 2020-02-24 17:08:49 +08:00 committed by Ulf Hansson
parent 6660d0ae12
commit 55fc7d93a5
1 changed files with 1 additions and 1 deletions
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2
drivers/mmc/host/sdhci-sprd.c
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@ -556,7 +556,7 @@ static int sdhci_sprd_probe(struct platform_device *pdev)
sdhci_sprd_voltage_switch;
host->mmc->caps = MMC_CAP_SD_HIGHSPEED | MMC_CAP_MMC_HIGHSPEED |
MMC_CAP_ERASE | MMC_CAP_CMD23;
MMC_CAP_ERASE | MMC_CAP_CMD23 | MMC_CAP_WAIT_WHILE_BUSY;
ret = mmc_of_parse(host->mmc);
if (ret)
goto pltfm_free;