Messages in this thread Patch in this message |  | | | Date | Sun, 27 May 2012 09:26:28 +0900 | | From | Greg KH <> | | Subject | [ 82/91] mmc: omap_hsmmc: pass IRQF_ONESHOT to request_threaded_irq |
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3.4-stable review patch. If anyone has any objections, please let me know.
------------------ From: Ming Lei <ming.lei@canonical.com>
commit db35f83ef47b5f180f2670d11f5f93992314ea09 upstream.
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@canonical.com> Acked-by: Venkatraman S <svenkatr@ti.com> Signed-off-by: Chris Ball <cjb@laptop.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
--- drivers/mmc/host/omap_hsmmc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/mmc/host/omap_hsmmc.c +++ b/drivers/mmc/host/omap_hsmmc.c @@ -1969,7 +1969,7 @@ static int __devinit omap_hsmmc_probe(st 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),
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