mmc: omap_hsmmc: pass IRQF_ONESHOT to request_threaded_irq

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>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Chris Ball <cjb@laptop.org>

diff --git a/drivers/mmc/host/omap_hsmmc.c b/drivers/mmc/host/omap_hsmmc.c
index d15b149649bf9d8122751ebc8f4eeb6060e9e47c..a9fc714fb38daed1113aab632047c8304347ac78 100644 (file)
--- 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),