mmc: meson-gx: remove useless lock

The spinlock is only used within the irq handler so it does not
seem very useful.

Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

diff --git a/drivers/mmc/host/meson-gx-mmc.c b/drivers/mmc/host/meson-gx-mmc.c
index fcb5d69..5cc31e4 100644 (file)
--- a/drivers/mmc/host/meson-gx-mmc.c
+++ b/drivers/mmc/host/meson-gx-mmc.c
@@ -26,7 +26,6 @@
 #include <linux/of_device.h>
 #include <linux/platform_device.h>
 #include <linux/ioport.h>
-#include <linux/spinlock.h>
 #include <linux/dma-mapping.h>
 #include <linux/mmc/host.h>
 #include <linux/mmc/mmc.h>
@@ -159,7 +158,6 @@ struct meson_host {
        struct  mmc_host        *mmc;
        struct  mmc_command     *cmd;
 
-       spinlock_t lock;
        void __iomem *regs;
        struct clk *core_clk;
        struct clk *mmc_clk;
@@ -1040,8 +1038,6 @@ static irqreturn_t meson_mmc_irq(int irq, void *dev_id)
        if (WARN_ON(!host) || WARN_ON(!host->cmd))
                return IRQ_NONE;
 
-       spin_lock(&host->lock);
-
        cmd = host->cmd;
        data = cmd->data;
        cmd->error = 0;
@@ -1091,7 +1087,6 @@ out:
        if (ret == IRQ_HANDLED)
                meson_mmc_request_done(host->mmc, cmd->mrq);
 
-       spin_unlock(&host->lock);
        return ret;
 }
 
@@ -1244,8 +1239,6 @@ static int meson_mmc_probe(struct platform_device *pdev)
        host->dev = &pdev->dev;
        dev_set_drvdata(&pdev->dev, host);
 
-       spin_lock_init(&host->lock);
-
        /* Get regulators and the supported OCR mask */
        host->vqmmc_enabled = false;
        ret = mmc_regulator_get_supply(mmc);