openwrt/target/linux/apm821xx/patches-5.4/802-usb-xhci-force-msi-renesas-xhci.patch
John Audia e95b1b23f1 kernel: bump 5.4 to 5.4.97
Ran update_kernel.sh in a fresh clone without any existing toolchains.

Manually rebased:
 bcm27xx
  950-0267-xhci-add-quirk-for-host-controllers-that-don-t-updat.patch
 bcm53xx
  180-usb-xhci-add-support-for-performing-fake-doorbell.patch
 layerscape
  302-dts-0008-arm64-dts-ls1046a-accumulated-change-to-ls1046a-boar.patch
  820-usb-0016-MLK-16735-usb-host-add-XHCI_CDNS_HOST-flag.patch
  820-usb-0018-MLK-18794-1-usb-host-xhci-add-.bus_suspend-override.patch

Build system: x86_64
Build-tested: bcm27xx/bcm2711, ipq806x/R7800
Run-tested: ipq806x/R7800

No dmesg regressions/everything functional.

Signed-off-by: John Audia <graysky@archlinux.us>
[remove quilt comment, fix/adjust 820-usb-* layerscape patches]
Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
2021-02-11 16:08:28 +01:00

54 lines
1.6 KiB
Diff

From a0dc613140bab907a3d5787a7ae7b0638bf674d0 Mon Sep 17 00:00:00 2001
From: Christian Lamparter <chunkeey@gmail.com>
Date: Thu, 23 Jun 2016 20:28:20 +0200
Subject: [PATCH] usb: xhci: force MSI for uPD720201 and
uPD720202
The APM82181 does not support MSI-X. When probed, it will
produce a noisy warning.
---
drivers/usb/host/pci-quirks.c | 362 ++++++++++++++++++++++++++++++++++++++++++
1 file changed, 362 insertions(+)
--- a/drivers/usb/host/xhci-pci.c
+++ b/drivers/usb/host/xhci-pci.c
@@ -285,6 +285,7 @@ static void xhci_pci_quirks(struct devic
pdev->device == 0x0015) {
xhci->quirks |= XHCI_RESET_ON_RESUME;
xhci->quirks |= XHCI_ZERO_64B_REGS;
+ xhci->quirks |= XHCI_FORCE_MSI;
}
if (pdev->vendor == PCI_VENDOR_ID_VIA)
xhci->quirks |= XHCI_RESET_ON_RESUME;
--- a/drivers/usb/host/xhci.c
+++ b/drivers/usb/host/xhci.c
@@ -423,10 +423,14 @@ static int xhci_try_enable_msi(struct us
free_irq(hcd->irq, hcd);
hcd->irq = 0;
- ret = xhci_setup_msix(xhci);
- if (ret)
- /* fall back to msi*/
+ if (xhci->quirks & XHCI_FORCE_MSI) {
ret = xhci_setup_msi(xhci);
+ } else {
+ ret = xhci_setup_msix(xhci);
+ if (ret)
+ /* fall back to msi*/
+ ret = xhci_setup_msi(xhci);
+ }
if (!ret) {
hcd->msi_enabled = 1;
--- a/drivers/usb/host/xhci.h
+++ b/drivers/usb/host/xhci.h
@@ -1882,6 +1882,7 @@ struct xhci_hcd {
struct xhci_hub usb2_rhub;
struct xhci_hub usb3_rhub;
/* support xHCI 1.0 spec USB2 hardware LPM */
+#define XHCI_FORCE_MSI (1 << 24)
unsigned hw_lpm_support:1;
/* Broken Suspend flag for SNPS Suspend resume issue */
unsigned broken_suspend:1;