linux-kernel - [PATCH v2 04/16] mmc: meson-gx: use

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Date:   Mon, 21 Aug 2017 18:02:49 +0200
From:   Jerome Brunet <jbrunet@...libre.com>
To:     Ulf Hansson <ulf.hansson@...aro.org>,
        Kevin Hilman <khilman@...libre.com>,
        Carlo Caione <carlo@...one.org>
Cc:     Jerome Brunet <jbrunet@...libre.com>, linux-mmc@...r.kernel.org,
        linux-amlogic@...ts.infradead.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: [PATCH v2 04/16] mmc: meson-gx: use _irqsave variant of spinlock

spinlock used in interrupt handler should use the _irqsave variant

Fixes: 51c5d8447bd7 ("MMC: meson: initial support for GX platforms")
Reviewed-by: Kevin Hilman <khilman@...libre.com>
Signed-off-by: Jerome Brunet <jbrunet@...libre.com>
---
 drivers/mmc/host/meson-gx-mmc.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/mmc/host/meson-gx-mmc.c b/drivers/mmc/host/meson-gx-mmc.c
index 8a74a048db88..a399fbd415f4 100644
--- a/drivers/mmc/host/meson-gx-mmc.c
+++ b/drivers/mmc/host/meson-gx-mmc.c
@@ -727,6 +727,7 @@ static irqreturn_t meson_mmc_irq(int irq, void *dev_id)
 	struct mmc_command *cmd;
 	struct mmc_data *data;
 	u32 irq_en, status, raw_status;
+	unsigned long flag;
 	irqreturn_t ret = IRQ_HANDLED;
 
 	if (WARN_ON(!host))
@@ -739,7 +740,7 @@ static irqreturn_t meson_mmc_irq(int irq, void *dev_id)
 
 	data = cmd->data;
 
-	spin_lock(&host->lock);
+	spin_lock_irqsave(&host->lock, flag);
 	irq_en = readl(host->regs + SD_EMMC_IRQ_EN);
 	raw_status = readl(host->regs + SD_EMMC_STATUS);
 	status = raw_status & irq_en;
@@ -806,7 +807,7 @@ static irqreturn_t meson_mmc_irq(int irq, void *dev_id)
 	if (ret == IRQ_HANDLED)
 		meson_mmc_request_done(host->mmc, cmd->mrq);
 
-	spin_unlock(&host->lock);
+	spin_unlock_irqrestore(&host->lock, flag);
 	return ret;
 }
 
-- 
2.9.5