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Commit 1b49dae1 authored by Greg Kroah-Hartman's avatar Greg Kroah-Hartman
Browse files

Merge tag 'usb-ci-v4.8-rc6' of... 

Merge tag 'usb-ci-v4.8-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/peter.chen/usb into usb-linus

Peter writes:

Fix the possible kernel panic when the hardware signal is bad for chipidea udc.
parents bcf42aa6 6f3c4fb6

drivers/usb/chipidea/udc.c

+9 −0
Original line number Diff line number Diff line
@@ -949,6 +949,15 @@ static int isr_setup_status_phase(struct ci_hdrc *ci) 
	int retval;

	struct ci_hw_ep *hwep;



	/*

	 * Unexpected USB controller behavior, caused by bad signal integrity

	 * or ground reference problems, can lead to isr_setup_status_phase

	 * being called with ci->status equal to NULL.

	 * If this situation occurs, you should review your USB hardware design.

	 */

	if (WARN_ON_ONCE(!ci->status))

		return -EPIPE;



	hwep = (ci->ep0_dir == TX) ? ci->ep0out : ci->ep0in;

	ci->status->context = ci;

	ci->status->complete = isr_setup_status_complete;