From: Lucas Stach <dev@lynxeye.de>
Date: Sat, 22 Oct 2016 23:02:02 +0000 (+0200)
Subject: USB: EHCI: elide I/O watchdog on AMD parts
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=5c2ad982fb422ae710184e5911de0d4e030de8ac;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git

USB: EHCI: elide I/O watchdog on AMD parts

This removes 10 timer wakeups per second. I'm running this patch for
a while now and haven't spotted any adverse effects.

Signed-off-by: Lucas Stach <dev@lynxeye.de>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/usb/host/ehci-pci.c b/drivers/usb/host/ehci-pci.c
index 3b3649d88c5f..0ed683c176f0 100644
--- a/drivers/usb/host/ehci-pci.c
+++ b/drivers/usb/host/ehci-pci.c
@@ -261,6 +261,7 @@ static int ehci_pci_setup(struct usb_hcd *hcd)
 		ehci->need_io_watchdog = 0;
 		break;
 	case PCI_VENDOR_ID_INTEL:
+	case PCI_VENDOR_ID_AMD:
 		ehci->need_io_watchdog = 0;
 		break;
 	case PCI_VENDOR_ID_NVIDIA: