diff options
Diffstat (limited to 'target/linux/apm821xx/patches-4.14/802-usb-xhci-force-msi-renesas-xhci.patch')
| -rw-r--r-- | target/linux/apm821xx/patches-4.14/802-usb-xhci-force-msi-renesas-xhci.patch | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/target/linux/apm821xx/patches-4.14/802-usb-xhci-force-msi-renesas-xhci.patch b/target/linux/apm821xx/patches-4.14/802-usb-xhci-force-msi-renesas-xhci.patch new file mode 100644 index 0000000000..ec97f16e27 --- /dev/null +++ b/target/linux/apm821xx/patches-4.14/802-usb-xhci-force-msi-renesas-xhci.patch @@ -0,0 +1,54 @@ +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 +@@ -196,7 +196,7 @@ static void xhci_pci_quirks(struct devic + xhci->quirks |= XHCI_TRUST_TX_LENGTH; + if (pdev->vendor == PCI_VENDOR_ID_RENESAS && + pdev->device == 0x0015) +- xhci->quirks |= XHCI_RESET_ON_RESUME; ++ xhci->quirks |= XHCI_RESET_ON_RESUME | 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 +@@ -357,10 +357,14 @@ 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 +@@ -1848,6 +1848,7 @@ struct xhci_hcd { + /* support xHCI 0.96 spec USB2 software LPM */ + unsigned sw_lpm_support:1; + /* support xHCI 1.0 spec USB2 hardware LPM */ ++#define XHCI_FORCE_MSI (1 << 24) + unsigned hw_lpm_support:1; + /* cached usb2 extened protocol capabilites */ + u32 *ext_caps; |