From: Masahiro Yamada <yamada.masahiro@socionext.com>
To: linux-mmc@vger.kernel.org, Ulf Hansson <ulf.hansson@linaro.org>,
Wolfram Sang <wsa+renesas@sang-engineering.com>
Cc: Masahiro Yamada <yamada.masahiro@socionext.com>,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org
Subject: [PATCH] mmc: uniphier-sd: call devm_request_irq() after tmio_mmc_host_probe()
Date: Mon, 11 May 2020 15:21:58 +0900 [thread overview]
Message-ID: <20200511062158.1790924-1-yamada.masahiro@socionext.com> (raw)
Currently, tmio_mmc_irq() handler is registered before the host is
fully initialized by tmio_mmc_host_probe(). I did not previously notice
this problem.
The boot ROM of a new Socionext SoC unmasks interrupts (CTL_IRQ_MASK)
somehow. The handler is invoked before tmio_mmc_host_probe(), then
emits noisy call trace.
Move devm_request_irq() below tmio_mmc_host_probe().
Fixes: 3fd784f745dd ("mmc: uniphier-sd: add UniPhier SD/eMMC controller driver")
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
---
drivers/mmc/host/uniphier-sd.c | 12 +++++++-----
1 file changed, 7 insertions(+), 5 deletions(-)
diff --git a/drivers/mmc/host/uniphier-sd.c b/drivers/mmc/host/uniphier-sd.c
index a1683c49cb90..f82baf99fd69 100644
--- a/drivers/mmc/host/uniphier-sd.c
+++ b/drivers/mmc/host/uniphier-sd.c
@@ -610,11 +610,6 @@ static int uniphier_sd_probe(struct platform_device *pdev)
}
}
- ret = devm_request_irq(dev, irq, tmio_mmc_irq, IRQF_SHARED,
- dev_name(dev), host);
- if (ret)
- goto free_host;
-
if (priv->caps & UNIPHIER_SD_CAP_EXTENDED_IP)
host->dma_ops = &uniphier_sd_internal_dma_ops;
else
@@ -642,8 +637,15 @@ static int uniphier_sd_probe(struct platform_device *pdev)
if (ret)
goto free_host;
+ ret = devm_request_irq(dev, irq, tmio_mmc_irq, IRQF_SHARED,
+ dev_name(dev), host);
+ if (ret)
+ goto remove_host;
+
return 0;
+remove_host:
+ tmio_mmc_host_remove(host);
free_host:
tmio_mmc_host_free(host);
--
2.25.1
next reply other threads:[~2020-05-11 6:23 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-11 6:21 Masahiro Yamada [this message]
2020-05-15 7:09 ` [PATCH] mmc: uniphier-sd: call devm_request_irq() after tmio_mmc_host_probe() Ulf Hansson
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