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authorHeiner Kallweit <hkallweit1@gmail.com>2017-02-08 00:34:51 +0300
committerUlf Hansson <ulf.hansson@linaro.org>2017-02-14 11:10:56 +0300
commit92763b997e468700b26a8fdddc5bee3e3c2a39fa (patch)
tree26d5deec4cbba7ccaf1daf39283931bf26ee966d /drivers/mmc/host/meson-gx-mmc.c
parent690f90b628aaa5800244d0c6d06f2c0fa2d57e22 (diff)
downloadlinux-92763b997e468700b26a8fdddc5bee3e3c2a39fa.tar.xz
mmc: meson-gx: improve interrupt handling
Disabling and immediately re-enabling interrupts in meson_mmc_request doesn't provide a benefit. Instead enable interrupts in probe already. And disable interrupts in remove, this was missing so far. Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com> Reviewed-by: Kevin Hilman <khilman@baylibre.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Diffstat (limited to 'drivers/mmc/host/meson-gx-mmc.c')
-rw-r--r--drivers/mmc/host/meson-gx-mmc.c9
1 files changed, 4 insertions, 5 deletions
diff --git a/drivers/mmc/host/meson-gx-mmc.c b/drivers/mmc/host/meson-gx-mmc.c
index dd7f936c974e..4c622ad26a70 100644
--- a/drivers/mmc/host/meson-gx-mmc.c
+++ b/drivers/mmc/host/meson-gx-mmc.c
@@ -542,11 +542,6 @@ static void meson_mmc_request(struct mmc_host *mmc, struct mmc_request *mrq)
/* Stop execution */
writel(0, host->regs + SD_EMMC_START);
- /* clear, ack, enable all interrupts */
- writel(0, host->regs + SD_EMMC_IRQ_EN);
- writel(IRQ_EN_MASK, host->regs + SD_EMMC_STATUS);
- writel(IRQ_EN_MASK, host->regs + SD_EMMC_IRQ_EN);
-
host->mrq = mrq;
if (mrq->sbc)
@@ -775,6 +770,7 @@ static int meson_mmc_probe(struct platform_device *pdev)
/* clear, ack, enable all interrupts */
writel(0, host->regs + SD_EMMC_IRQ_EN);
writel(IRQ_EN_MASK, host->regs + SD_EMMC_STATUS);
+ writel(IRQ_EN_MASK, host->regs + SD_EMMC_IRQ_EN);
ret = devm_request_threaded_irq(&pdev->dev, host->irq,
meson_mmc_irq, meson_mmc_irq_thread,
@@ -812,6 +808,9 @@ static int meson_mmc_remove(struct platform_device *pdev)
if (WARN_ON(!host))
return 0;
+ /* disable interrupts */
+ writel(0, host->regs + SD_EMMC_IRQ_EN);
+
if (host->bounce_buf)
dma_free_coherent(host->dev, host->bounce_buf_size,
host->bounce_buf, host->bounce_dma_addr);