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USB: ehci: omap: fix kernel panic with rmmod 

Sets the regulator values to NULL if they are not defined. This
is required to fix the kernel panic in exit path when EHCI module
is removed on the platforms where EHCI regulator are not set.

Signed-off-by: Ajay Kumar Gupta <ajay.gupta@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Ajay Kumar Gupta 2010-03-18 16:58:35 +05:30 committed by Greg Kroah-Hartman
parent 4c1f5c88aa
commit 18f91196b6
1 changed files with 4 additions and 2 deletions
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6
drivers/usb/host/ehci-omap.c
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@ -629,11 +629,13 @@ static int ehci_hcd_omap_probe(struct platform_device *pdev)
}
snprintf(supply, sizeof(supply), "hsusb%d", i);
omap->regulator[i] = regulator_get(omap->dev, supply);
if (IS_ERR(omap->regulator[i]))
if (IS_ERR(omap->regulator[i])) {
omap->regulator[i] = NULL;
dev_dbg(&pdev->dev,
"failed to get ehci port%d regulator\n", i);
else
} else {
regulator_enable(omap->regulator[i]);
}
}
ret = omap_start_ehc(omap, hcd);