openwrt/target/linux/apm821xx/patches-5.4/802-usb-xhci-force-msi-renesas-xhci.patch
Petr Štetiar 5ea3ea154f kernel: bump 5.4 to 5.4.36
Refreshed patches, removed upstreamed patch:

 generic/hack: 551-loop-Better-discard-support-for-block-devices.patch

Added generic config symbol `ARM64_ERRATUM_1542419` due to Fixes:
f2791551cedb ("arm64: errata: Hide CTR_EL0.DIC on systems affected by
Neoverse-N1 #1542419").

Run tested: qemu-x86-64, apalis, nbg6617
Build tested: x86/64, imx6, ipq40xx, sunxi/a53

Signed-off-by: Petr Štetiar <ynezz@true.cz>
2020-04-30 00:52:04 +02:00

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
@@ -275,6 +275,7 @@ 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
@@ -1880,6 +1880,7 @@ 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;