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Commit 2911b040 authored by Sriharsha Allenki's avatar Sriharsha Allenki Committed by Gerrit - the friendly Code Review server
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usb: dwc3: Use an ordered workqueue for sm_work 



The sm_work needs to be queued on an ordered workqueue.
The create_freezable does not ensure the ordered attribute
needed.
Hence, use the alloc_ordered_workqueue instead of it
with the flags WQ_FREEZABLE and WQ_MEM_RECLAIM.

Change-Id: I535cb826f117b0162efb87639c85d7b1634a441a
Signed-off-by: default avatarSriharsha Allenki <sallenki@codeaurora.org>
parent eca47d45

drivers/usb/dwc3/dwc3-msm.c

+6 −5
Original line number Diff line number Diff line
@@ -3481,12 +3481,13 @@ static int dwc3_msm_probe(struct platform_device *pdev) 
	}



	/*

	 * Create freezable workqueue for sm_work so that it gets scheduled only

	 * after pm_resume has happened completely. This helps in avoiding race

	 * conditions between xhci_plat_resume and xhci_runtime_resume; and also

	 * between hcd disconnect and xhci_resume.

	 * Create an ordered freezable workqueue for sm_work so that it gets

	 * scheduled only after pm_resume has happened completely. This helps

	 * in avoiding race conditions between xhci_plat_resume and

	 * xhci_runtime_resume and also between hcd disconnect and xhci_resume.

	 */

	mdwc->sm_usb_wq = create_freezable_workqueue("k_sm_usb");

	mdwc->sm_usb_wq = alloc_ordered_workqueue("k_sm_usb",

						WQ_FREEZABLE | WQ_MEM_RECLAIM);

	if (!mdwc->sm_usb_wq) {

		destroy_workqueue(mdwc->dwc3_wq);

		return -ENOMEM;