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mmc: omap: fix broken slot switch lookup 

[ Upstream commit d4debbcbff ]

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: e519f0bb64 ("ARM/mmc: Convert old mmci-omap to GPIO descriptors")
Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Message-ID: <20240223181439.1099750-4-aaro.koskinen@iki.fi>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Aaro Koskinen 2024-02-23 20:14:37 +02:00 committed by Greg Kroah-Hartman
parent 9ce46530d1
commit 2020c5d72a
1 changed files with 6 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

13
drivers/mmc/host/omap.c
View File

@ -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;