[PATCH v2 2/5] mmc: sdhci-sprd: add get_ro hook function

[Chunyan Zhang]

From: Chunyan Zhang <chunyan.zh...@unisoc.com>

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.zh...@unisoc.com>
Signed-off-by: Chunyan Zhang <zhang.l...@gmail.com>
Reviewed-by: Baolin Wang <baolin.w...@linaro.org>
Tested-by: Baolin Wang <baolin.w...@linaro.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 d5871865a1e9..90cb2af91159 100644
--- a/drivers/mmc/host/sdhci-sprd.c
+++ b/drivers/mmc/host/sdhci-sprd.c
@@ -374,6 +374,11 @@ 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,
@@ -386,6 +391,7 @@ 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