On Thu, May 17, 2012 at 7:57 AM, Ming Lei <ming.lei@xxxxxxxxxxxxx> wrote:
> The flag of IRQF_ONESHOT should be passed to request_threaded_irq,
> otherwise the following failure message should be dumped because
> hardware handler is defined as NULL:
>
> [ 3.383483] genirq: Threaded irq requested with handler=NULL and
> !ONESHOT for irq 368
> [ 3.392730] omap_hsmmc: probe of omap_hsmmc.0 failed with error -22
>
> The patch fixes one kernel hang bug which is caused by mmc card
> probe failure and root device can't be brought up.
>
> Signed-off-by: Ming Lei <ming.lei@xxxxxxxxxxxxx>
Right thing to do!
Acked-by: Venkatraman S <svenkatr@xxxxxx>
> ---
> drivers/mmc/host/omap_hsmmc.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/mmc/host/omap_hsmmc.c b/drivers/mmc/host/omap_hsmmc.c
> index ebaf62a..9a7a60a 100644
> --- a/drivers/mmc/host/omap_hsmmc.c
> +++ b/drivers/mmc/host/omap_hsmmc.c
> @@ -1981,7 +1981,7 @@ static int __devinit omap_hsmmc_probe(struct platform_device *pdev)
> ret = request_threaded_irq(mmc_slot(host).card_detect_irq,
> NULL,
> omap_hsmmc_detect,
> - IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
> + IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING | IRQF_ONESHOT,
> mmc_hostname(mmc), host);
> if (ret) {
> dev_dbg(mmc_dev(host->mmc),
> --
> 1.7.9.5
>
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