From: Aaro Koskinen <aaro.koskinen@iki.fi>
To: Tony Lindgren <tony@atomide.com>,
Ulf Hansson <ulf.hansson@linaro.org>,
Linus Walleij <linus.walleij@linaro.org>,
linux-omap@vger.kernel.org
Cc: linux-kernel@vger.kernel.org, Aaro Koskinen <aaro.koskinen@iki.fi>
Subject: [PATCH 3/5] MMC: OMAP: fix broken slot switch lookup
Date: Fri, 23 Feb 2024 20:14:37 +0200 [thread overview]
Message-ID: <20240223181439.1099750-4-aaro.koskinen@iki.fi> (raw)
In-Reply-To: <20240223181439.1099750-1-aaro.koskinen@iki.fi>
The lookup is done before host->dev is initialized. It will always just
fail silently, and the MMC behaviour is totally unpredictable as the switch
is left in an undefined state. Fix that.
Fixes: e519f0bb64ef ("ARM/mmc: Convert old mmci-omap to GPIO descriptors")
Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
---
drivers/mmc/host/omap.c | 13 ++++++-------
1 file changed, 6 insertions(+), 7 deletions(-)
diff --git a/drivers/mmc/host/omap.c b/drivers/mmc/host/omap.c
index 9fb8995b43a1..aa40e1a9dc29 100644
--- a/drivers/mmc/host/omap.c
+++ b/drivers/mmc/host/omap.c
@@ -1384,13 +1384,6 @@ static int mmc_omap_probe(struct platform_device *pdev)
if (IS_ERR(host->virt_base))
return PTR_ERR(host->virt_base);
- host->slot_switch = gpiod_get_optional(host->dev, "switch",
- GPIOD_OUT_LOW);
- if (IS_ERR(host->slot_switch))
- return dev_err_probe(host->dev, PTR_ERR(host->slot_switch),
- "error looking up slot switch GPIO\n");
-
-
INIT_WORK(&host->slot_release_work, mmc_omap_slot_release_work);
INIT_WORK(&host->send_stop_work, mmc_omap_send_stop_work);
@@ -1409,6 +1402,12 @@ static int mmc_omap_probe(struct platform_device *pdev)
host->dev = &pdev->dev;
platform_set_drvdata(pdev, host);
+ host->slot_switch = gpiod_get_optional(host->dev, "switch",
+ GPIOD_OUT_LOW);
+ if (IS_ERR(host->slot_switch))
+ return dev_err_probe(host->dev, PTR_ERR(host->slot_switch),
+ "error looking up slot switch GPIO\n");
+
host->id = pdev->id;
host->irq = irq;
host->phys_base = res->start;
--
2.39.2
next prev parent reply other threads:[~2024-02-23 18:15 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-02-23 18:14 [PATCH 0/5] Fix MMC/GPIO regression on Nokia N8x0 Aaro Koskinen
2024-02-23 18:14 ` [PATCH 1/5] ARM: OMAP: fix bogus MMC GPIO labels " Aaro Koskinen
2024-02-23 18:14 ` [PATCH 2/5] ARM: OMAP: fix N810 MMC gpiod table Aaro Koskinen
2024-02-23 18:14 ` Aaro Koskinen [this message]
2024-02-23 18:14 ` [PATCH 4/5] MMC: OMAP: fix deferred probe Aaro Koskinen
2024-02-23 18:14 ` [PATCH 5/5] MMC: OMAP: restore original power up/down steps Aaro Koskinen
2024-02-23 20:47 ` [PATCH 0/5] Fix MMC/GPIO regression on Nokia N8x0 Linus Walleij
2024-02-26 10:56 ` Tony Lindgren
2024-02-29 15:06 ` Ulf Hansson
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