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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


WARNING: multiple messages have this Message-ID (diff)
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-kernel@vger.kernel.org,
	linux-arm-kernel@lists.infradead.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


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             reply	other threads:[~2020-05-11  6:23 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-05-11  6:21 Masahiro Yamada [this message]
2020-05-11  6:21 ` [PATCH] mmc: uniphier-sd: call devm_request_irq() after tmio_mmc_host_probe() Masahiro Yamada
2020-05-15  7:09 ` Ulf Hansson
2020-05-15  7:09   ` Ulf Hansson

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