[PATCH v2 04/16] mmc: meson-gx: use _irqsave variant of spinlock
From: jbrunet@baylibre.com (Jerome Brunet)
Date: 2017-08-21 16:10:14
Also in:
linux-amlogic, linux-mmc, lkml
Subsystem:
arm/amlogic meson soc support, multimedia card (mmc), secure digital (sd) and sdio subsystem, the rest · Maintainers:
Neil Armstrong, Kevin Hilman, Ulf Hansson, Linus Torvalds
spinlock used in interrupt handler should use the _irqsave variant
Fixes: 51c5d8447bd7 ("MMC: meson: initial support for GX platforms")
Reviewed-by: Kevin Hilman <khilman@baylibre.com>
Signed-off-by: Jerome Brunet <jbrunet@baylibre.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