6.6-stable review patch. If anyone has any objections, please let me know.
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From: Aaro Koskinen aaro.koskinen@iki.fi
[ Upstream commit d4debbcbffa45c3de5df0040af2eea74a9e794a3 ]
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 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 --- 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 9fb8995b43a1c..aa40e1a9dc29e 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;