diff options
| author | Fabio Estevam <fabio.estevam@nxp.com> | 2016-11-05 17:45:07 -0200 |
|---|---|---|
| committer | Ben Hutchings <ben@decadent.org.uk> | 2017-02-23 03:54:30 +0000 |
| commit | cd9e47dc4a69d2dc7f1f7e7be3f40991b2a89ae2 (patch) | |
| tree | b8568309805911024a7ae0e66c8a7b45e9e53097 /drivers/mmc | |
| parent | bc776413673d4cf2ab7a035da4c07a737e5fbbd9 (diff) | |
mmc: mxs: Initialize the spinlock prior to using it
commit f91346e8b5f46aaf12f1df26e87140584ffd1b3f 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: e4243f13d10e (mmc: mxs-mmc: add mmc host driver for i.MX23/28)
Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com>
Reviewed-by: Marek Vasut <marex@denx.de>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
[bwh: Backported to 3.16 adjust context]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Diffstat (limited to 'drivers/mmc')
| -rw-r--r-- | drivers/mmc/host/mxs-mmc.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/mmc/host/mxs-mmc.c b/drivers/mmc/host/mxs-mmc.c index babfea03ba8a..ad32f235bdb8 100644 --- a/drivers/mmc/host/mxs-mmc.c +++ b/drivers/mmc/host/mxs-mmc.c @@ -658,13 +658,13 @@ 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; |