The patch below does not apply to the 5.2-stable tree.
If someone wants it applied there, or to any other stable or longterm
tree, then please email the backport, including the original git commit
id to <stable@xxxxxxxxxxxxxxx>.
thanks,
greg k-h
------------------ original commit in Linus's tree ------------------
>From 4eae8cbdff942a423926486be4e781a77d619966 Mon Sep 17 00:00:00 2001
From: Chunyan Zhang <chunyan.zhang@xxxxxxxxxx>
Date: Wed, 28 Aug 2019 10:17:33 +0800
Subject: [PATCH] mmc: sdhci-sprd: add get_ro hook function
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@xxxxxxxxxx>
Signed-off-by: Chunyan Zhang <zhang.lyra@xxxxxxxxx>
Reviewed-by: Baolin Wang <baolin.wang@xxxxxxxxxx>
Tested-by: Baolin Wang <baolin.wang@xxxxxxxxxx>
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Ulf Hansson <ulf.hansson@xxxxxxxxxx>
diff --git a/drivers/mmc/host/sdhci-sprd.c b/drivers/mmc/host/sdhci-sprd.c
index 25f2fc4ce08f..ddc048e72385 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)
