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ARM: OMAP: USB: Fixup ehci_hcd_omap_probe error path

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A recent commit, [PATCH] Fix OMAP EHCI suspend/resume failure
(i693) '354ab856' causes ehci probe to fail on omap3xxx. This
exposed bugs in the ehci_hcd_omap_probe error path causing
an oops.

On the error path, call usb_remove_hcd if usb_add_hcd has been
called, and call usb_put_hcd if usb_alloc_hcd has been called.

Tested on BB-xM.

Signed-off-by: Russ.Dill@ti.com
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Russ Dill 2012-06-21 03:44:31 -07:00 • committed by Greg Kroah-Hartman
commit 984e97483a
1 changed files with 5 additions and 1 deletions
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6
drivers/usb/host/ehci-omap.c
View file

@ -347,7 +347,7 @@ static int ehci_hcd_omap_probe(struct platform_device *pdev)
ret = usb_add_hcd(hcd, irq, IRQF_SHARED);
if (ret) {
dev_err(dev, "failed to add hcd with err %d\n", ret);
goto err_add_hcd;
goto err_pm_runtime;
}
/* root ports should always stay powered */
@ -424,8 +424,12 @@ err_utmi_p1_fck:
clk_put(utmi_p1_fck);
err_add_hcd:
usb_remove_hcd(hcd);
err_pm_runtime:
disable_put_regulator(pdata);
pm_runtime_put_sync(dev);
usb_put_hcd(hcd);
err_io:
iounmap(regs);