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mmc: sunxi-mmc: Fix clock refcount imbalance during unbind

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commit 8509419758 upstream.

If the controller is suspended by runtime PM, the clock is already
disabled, so do not try to disable it again during removal. Use
pm_runtime_disable() to flush any pending runtime PM transitions.

Fixes: 9a8e1e8cc2 ("mmc: sunxi: Add runtime_pm support")
Signed-off-by: Samuel Holland <samuel@sholland.org>
Acked-by: Jernej Skrabec <jernej.skrabec@gmail.com>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20220810022509.43743-1-samuel@sholland.org
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Samuel Holland 2022-08-09 21:25:09 -05:00 • committed by Greg Kroah-Hartman
commit 79819909c2
1 changed files with 5 additions and 3 deletions
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8
drivers/mmc/host/sunxi-mmc.c
View file

@ -1459,9 +1459,11 @@ static int sunxi_mmc_remove(struct platform_device *pdev)
struct sunxi_mmc_host *host = mmc_priv(mmc);
mmc_remove_host(mmc);
pm_runtime_force_suspend(&pdev->dev);
disable_irq(host->irq);
sunxi_mmc_disable(host);
pm_runtime_disable(&pdev->dev);
if (!pm_runtime_status_suspended(&pdev->dev)) {
disable_irq(host->irq);
sunxi_mmc_disable(host);
}
dma_free_coherent(&pdev->dev, PAGE_SIZE, host->sg_cpu, host->sg_dma);
mmc_free_host(mmc);