summaryrefslogtreecommitdiffstats
path: root/drivers/mmc
diff options
context:
space:
mode:
authorJerome Brunet <jbrunet@baylibre.com>2019-05-23 16:59:50 +0200
committerUlf Hansson <ulf.hansson@linaro.org>2019-05-28 10:23:26 +0200
commitc2c1e63a80d6e9bb9981fc958cd2dac5346212be (patch)
tree928ec2821589ec5f219ee83abb549b2bb9ad404a /drivers/mmc
parent51b72656bb39fdcb8f3174f4007bcc83ad1d275f (diff)
downloadlinux-c2c1e63a80d6e9bb9981fc958cd2dac5346212be.tar.bz2
mmc: meson-gx: fix irq ack
While cleaning the ISR of the meson-gx and acking only raised irqs, the ack of the irq was moved at the very last stage of the function. This was stable during the initial tests but it triggered issues with hs200, under specific loads (like booting android). Acking the irqs after calling the mmc_request_done() causes the problem. Moving the ack back to the original place solves the issue. Since the irq is edge triggered, it does not hurt to ack irq even earlier, so let's do it early in the ISR. Fixes: 9c5fdb07a28d ("mmc: meson-gx: ack only raised irq") Tested-by: Neil Armstrong <narmstrong@baylibre.com> Tested-by: Kevin Hilman <khilman@baylibre.com> Signed-off-by: Jerome Brunet <jbrunet@baylibre.com> Reviewed-by: Kevin Hilman <khilman@baylibre.com> Tested-by: Brad Harper <bjharper@gmail.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Diffstat (limited to 'drivers/mmc')
-rw-r--r--drivers/mmc/host/meson-gx-mmc.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/mmc/host/meson-gx-mmc.c b/drivers/mmc/host/meson-gx-mmc.c
index c5a8af4ca76b..5582561586b4 100644
--- a/drivers/mmc/host/meson-gx-mmc.c
+++ b/drivers/mmc/host/meson-gx-mmc.c
@@ -859,6 +859,9 @@ static irqreturn_t meson_mmc_irq(int irq, void *dev_id)
if (WARN_ON(!host) || WARN_ON(!host->cmd))
return IRQ_NONE;
+ /* ack all raised interrupts */
+ writel(status, host->regs + SD_EMMC_STATUS);
+
cmd = host->cmd;
data = cmd->data;
cmd->error = 0;
@@ -905,9 +908,6 @@ out:
if (ret == IRQ_HANDLED)
meson_mmc_request_done(host->mmc, cmd->mrq);
- /* ack all raised interrupts */
- writel(status, host->regs + SD_EMMC_STATUS);
-
return ret;
}