diff options
Diffstat (limited to 'target/linux/bcm53xx/patches-4.4/190-usb-xhci-plat-fix-adding-usb3-lpm-capable-quirk.patch')
| -rw-r--r-- | target/linux/bcm53xx/patches-4.4/190-usb-xhci-plat-fix-adding-usb3-lpm-capable-quirk.patch | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/target/linux/bcm53xx/patches-4.4/190-usb-xhci-plat-fix-adding-usb3-lpm-capable-quirk.patch b/target/linux/bcm53xx/patches-4.4/190-usb-xhci-plat-fix-adding-usb3-lpm-capable-quirk.patch new file mode 100644 index 0000000000..c120829495 --- /dev/null +++ b/target/linux/bcm53xx/patches-4.4/190-usb-xhci-plat-fix-adding-usb3-lpm-capable-quirk.patch @@ -0,0 +1,63 @@ +From 1420e53fc88673683f8990aa5342e7b2640ce165 Mon Sep 17 00:00:00 2001 +From: Hauke Mehrtens <hauke@hauke-m.de> +Date: Sun, 18 Oct 2015 19:13:27 +0200 +Subject: [PATCH v3 1/6] usb: xhci: plat: fix adding usb3-lpm-capable quirk + +The xhci->quirks member is overwritten in xhci_gen_setup() with the +quirks given through the module load parameter. Without this patch the +usb3-lpm-capable quirk will be over written before it gets used. This +patch moves the quirks code to the xhci_plat_quirks() callback function +which gets called directly after the quirks member variable is +overwritten with the module load parameter. + +I do not have any hardware which is using usb3-lpm-capabls so I can not +test this on real hardware. + +Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de> +--- + drivers/usb/host/xhci-plat.c | 14 ++++++++------ + 1 file changed, 8 insertions(+), 6 deletions(-) + +--- a/drivers/usb/host/xhci-plat.c ++++ b/drivers/usb/host/xhci-plat.c +@@ -38,12 +38,20 @@ static const struct xhci_driver_override + + static void xhci_plat_quirks(struct device *dev, struct xhci_hcd *xhci) + { ++ struct platform_device *pdev = to_platform_device(dev); ++ struct device_node *node = pdev->dev.of_node; ++ struct usb_xhci_pdata *pdata = dev_get_platdata(&pdev->dev); ++ + /* + * As of now platform drivers don't provide MSI support so we ensure + * here that the generic code does not try to make a pci_dev from our + * dev struct in order to setup MSI + */ + xhci->quirks |= XHCI_PLAT; ++ ++ if ((node && of_property_read_bool(node, "usb3-lpm-capable")) || ++ (pdata && pdata->usb3_lpm_capable)) ++ xhci->quirks |= XHCI_LPM_SUPPORT; + } + + /* called during probe() after chip reset completes */ +@@ -75,8 +83,6 @@ static int xhci_plat_start(struct usb_hc + + static int xhci_plat_probe(struct platform_device *pdev) + { +- struct device_node *node = pdev->dev.of_node; +- struct usb_xhci_pdata *pdata = dev_get_platdata(&pdev->dev); + const struct hc_driver *driver; + struct xhci_hcd *xhci; + struct resource *res; +@@ -155,10 +161,6 @@ static int xhci_plat_probe(struct platfo + goto disable_clk; + } + +- if ((node && of_property_read_bool(node, "usb3-lpm-capable")) || +- (pdata && pdata->usb3_lpm_capable)) +- xhci->quirks |= XHCI_LPM_SUPPORT; +- + if (HCC_MAX_PSA(xhci->hcc_params) >= 4) + xhci->shared_hcd->can_do_streams = 1; + |