Commit 1a13c10f authored by Fabio Estevam's avatar Fabio Estevam Committed by Jiri Slaby

mmc: mxs: Initialize the spinlock prior to using it

commit f91346e8 upstream.

An interrupt may occur right after devm_request_irq() is called and
prior to the spinlock initialization, leading to a kernel oops,
as the interrupt handler uses the spinlock.

In order to prevent this problem, move the spinlock initialization
prior to requesting the interrupts.

Fixes: e4243f13 (mmc: mxs-mmc: add mmc host driver for i.MX23/28)
Signed-off-by: default avatarFabio Estevam <fabio.estevam@nxp.com>
Reviewed-by: default avatarMarek Vasut <marex@denx.de>
Signed-off-by: default avatarUlf Hansson <ulf.hansson@linaro.org>
Signed-off-by: default avatarJiri Slaby <jslaby@suse.cz>
parent f9bb2b84
......@@ -675,13 +675,13 @@ static int mxs_mmc_probe(struct platform_device *pdev)
platform_set_drvdata(pdev, mmc);
spin_lock_init(&host->lock);
ret = devm_request_irq(&pdev->dev, irq_err, mxs_mmc_irq_handler, 0,
DRIVER_NAME, host);
if (ret)
goto out_free_dma;
spin_lock_init(&host->lock);
ret = mmc_add_host(mmc);
if (ret)
goto out_free_dma;
......
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