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Subject[PATCH v2 1/1] mmc: host: meson-gx-mmc: fix possible deadlock condition for preempt_rt
Date
---
drivers/mmc/host/meson-gx-mmc.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/mmc/host/meson-gx-mmc.c b/drivers/mmc/host/meson-gx-mmc.c
index 08a3b1c05..3ba8f988d 100644
--- a/drivers/mmc/host/meson-gx-mmc.c
+++ b/drivers/mmc/host/meson-gx-mmc.c
@@ -146,6 +146,7 @@ struct sd_emmc_desc {
};

struct meson_host {
+ spinlock_t lock;
struct device *dev;
struct meson_mmc_data *data;
struct mmc_host *mmc;
@@ -1051,6 +1052,7 @@ static int meson_mmc_probe(struct platform_device *pdev)
host->mmc = mmc;
host->dev = &pdev->dev;
dev_set_drvdata(&pdev->dev, host);
+ spin_lock_init(&host->lock);

/* The G12A SDIO Controller needs an SRAM bounce buffer */
host->dram_access_quirk = device_property_read_bool(&pdev->dev,
@@ -1139,7 +1141,7 @@ static int meson_mmc_probe(struct platform_device *pdev)
host->regs + SD_EMMC_IRQ_EN);

ret = request_threaded_irq(host->irq, meson_mmc_irq,
- meson_mmc_irq_thread, IRQF_ONESHOT,
+ meson_mmc_irq_thread, 0,
dev_name(&pdev->dev), host);
if (ret)
goto err_init_clk;
--
2.20.1
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