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Subject[PATCH 5.2 131/143] mmc: sdhci-sprd: add get_ro hook function
Date
[ Upstream commit 4eae8cbdff942a423926486be4e781a77d619966 ]

sprd's sd host controller doesn't support write protect to sd card.

Fixes: fb8bd90f83c4 ("mmc: sdhci-sprd: Add Spreadtrum's initial host controller")
Signed-off-by: Chunyan Zhang <chunyan.zhang@unisoc.com>
Signed-off-by: Chunyan Zhang <zhang.lyra@gmail.com>
Reviewed-by: Baolin Wang <baolin.wang@linaro.org>
Tested-by: Baolin Wang <baolin.wang@linaro.org>
Cc: stable@vger.kernel.org
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/mmc/host/sdhci-sprd.c | 6 ++++++
1 file changed, 6 insertions(+)

diff --git a/drivers/mmc/host/sdhci-sprd.c b/drivers/mmc/host/sdhci-sprd.c
index 1c5e6b77ca641..fc892a8d882fd 100644
--- a/drivers/mmc/host/sdhci-sprd.c
+++ b/drivers/mmc/host/sdhci-sprd.c
@@ -291,6 +291,11 @@ static unsigned int sdhci_sprd_get_max_timeout_count(struct sdhci_host *host)
return 1 << 31;
}

+static unsigned int sdhci_sprd_get_ro(struct sdhci_host *host)
+{
+ return 0;
+}
+
static struct sdhci_ops sdhci_sprd_ops = {
.read_l = sdhci_sprd_readl,
.write_l = sdhci_sprd_writel,
@@ -303,6 +308,7 @@ static struct sdhci_ops sdhci_sprd_ops = {
.set_uhs_signaling = sdhci_sprd_set_uhs_signaling,
.hw_reset = sdhci_sprd_hw_reset,
.get_max_timeout_count = sdhci_sprd_get_max_timeout_count,
+ .get_ro = sdhci_sprd_get_ro,
};

static void sdhci_sprd_request(struct mmc_host *mmc, struct mmc_request *mrq)
--
2.20.1


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