Debugging failure to get MMC2 IRQ 86

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Hi,
      I get an error when attempting to obtain an IRQ (86) for MMC2 controller, which is connected to a Murata TI WL1271 wlan module, using the TI proprietary driver.

TIWLAN: 2769.576375: pInitParams->RoamingScanning_2_4G_enable 0 
SDIO clock Configuration is now set to 24Mhz
After sdioDrv_ConnectBus, iStatus=0 
After SD_IO_GO_IDLE_STATE, iStatus=0 
sdioDrv_ExecuteCmd() SDIO Command error status = 0x18000
After VDD_VOLTAGE_WINDOW, iStatus=-1 
TIWLAN: 2770.045094: Try to SDBus Connect again...
SDIO clock Configuration is now set to 24Mhz
sdioDrv_InitHw() - request_irq FAILED!!

More specifically, in file ti_wlan_driver/external_drivers/omap3530/Linux/sdio/SdioDrv.c

line 201:

#define INT_MMC2_IRQ                   86
#define OMAP_MMC_IRQ                   INT_MMC2_IRQ

It fails in the following function call:

line 778: in function sdioDrv_InitHw():

    rc = request_irq(OMAP_MMC_IRQ, 
                     sdiodrv_irq, 
                     0, 
                     SDIO_DRIVER_NAME, 
                     &g_drv);
    if (rc != 0)
    {
        PERR ("sdioDrv_InitHw() - request_irq FAILED!!\n");
        goto err;
    }

What could the reason be for not being able to obtain this IRQ 86 for MMC2 controller? Its pretty standard, and shouldn't have a problem getting allocated.

Best regards,

Elvis Dowson


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