aboutsummaryrefslogtreecommitdiffstats
path: root/target/linux/bcm53xx/patches-4.4/190-usb-xhci-plat-fix-adding-usb3-lpm-capable-quirk.patch
diff options
context:
space:
mode:
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.patch63
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;
+