mmc: host: sdhci-sprd: Set the missing MMC_CAP_WAIT_WHILE_BUSY flag

Message ID 96f16647f6a6e8cb058c44e46c61b122df027059.1582535202.git.baolin.wang7@gmail.com
State New
Headers show
Series
  • mmc: host: sdhci-sprd: Set the missing MMC_CAP_WAIT_WHILE_BUSY flag
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Commit Message

Baolin Wang Feb. 24, 2020, 9:08 a.m.
The Spreadtrum host controller supports HW busy detection for I/O
operations, which means when the host gets a transfer complete event,
that always indicates the busy signal is released. Thus we can set
the MMC_CAP_WAIT_WHILE_BUSY flag to remove some redundant software
busy polling.

Signed-off-by: Baolin Wang <baolin.wang7@gmail.com>
---
 drivers/mmc/host/sdhci-sprd.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Patch

diff --git a/drivers/mmc/host/sdhci-sprd.c b/drivers/mmc/host/sdhci-sprd.c
index d346223..2ab42c5 100644
--- a/drivers/mmc/host/sdhci-sprd.c
+++ b/drivers/mmc/host/sdhci-sprd.c
@@ -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;