diff options
Diffstat (limited to 'target/linux/apm821xx/patches-4.4/802-usb-xhci-force-msi-renesas-xhci.patch')
| -rw-r--r-- | target/linux/apm821xx/patches-4.4/802-usb-xhci-force-msi-renesas-xhci.patch | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/target/linux/apm821xx/patches-4.4/802-usb-xhci-force-msi-renesas-xhci.patch b/target/linux/apm821xx/patches-4.4/802-usb-xhci-force-msi-renesas-xhci.patch new file mode 100644 index 0000000000..a09e9dc41c --- /dev/null +++ b/target/linux/apm821xx/patches-4.4/802-usb-xhci-force-msi-renesas-xhci.patch @@ -0,0 +1,57 @@ +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(+) + +diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c +index 1c4d89e..555bd3f 100644 +--- a/drivers/usb/host/xhci-pci.c ++++ b/drivers/usb/host/xhci-pci.c +@@ -172,7 +172,7 @@ static void xhci_pci_quirks(struct device *dev, struct xhci_hcd *xhci) + } + 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; + +diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c +index 9e71c96..27cfcb9 100644 +--- a/drivers/usb/host/xhci.c ++++ b/drivers/usb/host/xhci.c +@@ -389,10 +389,14 @@ static int xhci_try_enable_msi(struct usb_hcd *hcd) + 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->irq is 0, we have MSI */ +diff --git a/drivers/usb/host/xhci.h b/drivers/usb/host/xhci.h +index 6b085aa..514dc3f 100644 +--- a/drivers/usb/host/xhci.h ++++ b/drivers/usb/host/xhci.h +@@ -1649,3 +1649,4 @@ struct xhci_hcd { + #define XHCI_BROKEN_STREAMS (1 << 19) + #define XHCI_PME_STUCK_QUIRK (1 << 20) ++#define XHCI_FORCE_MSI (1 << 24) + unsigned int num_active_eps; |