From: lintao <lintao@rock-chips.com>
Date: Wed, 10 Sep 2014 07:21:15 +0000 (+0800)
Subject: mmc: fix spinlock bf in irq env
X-Git-Tag: firefly_0821_release~4729
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=5dce427f179ea;p=firefly-linux-kernel-4.4.55.git

mmc: fix spinlock bf in irq env
---

diff --git a/drivers/mmc/host/rk_sdmmc.c b/drivers/mmc/host/rk_sdmmc.c
index 586b91479e3a..4f3c0d3b9ae4 100755
--- a/drivers/mmc/host/rk_sdmmc.c
+++ b/drivers/mmc/host/rk_sdmmc.c
@@ -1694,10 +1694,11 @@ static void dw_mci_enable_sdio_irq(struct mmc_host *mmc, int enb)
 {
 	struct dw_mci_slot *slot = mmc_priv(mmc);
 	struct dw_mci *host = slot->host;
+	unsigned long flags;
 	u32 int_mask;
 	u32 sdio_int;
 
-        spin_lock_bh(&host->lock);
+        spin_lock_irqsave(&host->lock, flags);
 
 	/* Enable/disable Slot Specific SDIO interrupt */
 	int_mask = mci_readl(host, INTMASK);
@@ -1723,7 +1724,7 @@ static void dw_mci_enable_sdio_irq(struct mmc_host *mmc, int enb)
 			   (int_mask & ~sdio_int));
 	}
 
-	spin_unlock_bh(&host->lock);
+	spin_unlock_irqrestore(&host->lock, flags);
 }
 
 #ifdef CONFIG_MMC_DW_ROCKCHIP_SWITCH_VOLTAGE