mmc: sdhci-sprd: add get_ro hook function

[ 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>

diff --git a/drivers/mmc/host/sdhci-sprd.c b/drivers/mmc/host/sdhci-sprd.c
index 1c5e6b77ca641258ee64ed068788eb8368ba52d4..fc892a8d882fd1c868e57e9425ae2e3154a78dbd 100644 (file)
--- 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)