kernel: generic: Add kernel 4.14 support

[openwrt/openwrt.git] / target / linux / generic / pending-4.14 / 110-ehci_hcd_ignore_oc.patch

diff --git a/target/linux/generic/pending-4.14/110-ehci_hcd_ignore_oc.patch b/target/linux/generic/pending-4.14/110-ehci_hcd_ignore_oc.patch
new file mode 100644 (file)
index 0000000..b45b1c0
--- /dev/null
+++ b/target/linux/generic/pending-4.14/110-ehci_hcd_ignore_oc.patch
@@ -0,0 +1,79 @@
+From: Florian Fainelli <florian@openwrt.org>
+Subject: USB: EHCI: add ignore_oc flag to disable overcurrent checking
+
+This patch adds an ignore_oc flag which can be set by EHCI controller
+not supporting or wanting to disable overcurrent checking. The EHCI
+platform data in include/linux/usb/ehci_pdriver.h is also augmented to
+take advantage of this new flag.
+
+Signed-off-by: Florian Fainelli <florian@openwrt.org>
+---
+ drivers/usb/host/ehci-hcd.c      |    2 +-
+ drivers/usb/host/ehci-hub.c      |    4 ++--
+ drivers/usb/host/ehci-platform.c |    1 +
+ drivers/usb/host/ehci.h          |    1 +
+ include/linux/usb/ehci_pdriver.h |    1 +
+ 5 files changed, 6 insertions(+), 3 deletions(-)
+
+--- a/drivers/usb/host/ehci-hcd.c
++++ b/drivers/usb/host/ehci-hcd.c
+@@ -651,7 +651,7 @@ static int ehci_run (struct usb_hcd *hcd
+               "USB %x.%x started, EHCI %x.%02x%s\n",
+               ((ehci->sbrn & 0xf0)>>4), (ehci->sbrn & 0x0f),
+               temp >> 8, temp & 0xff,
+-              ignore_oc ? ", overcurrent ignored" : "");
++              (ignore_oc || ehci->ignore_oc) ? ", overcurrent ignored" : "");
+ 
+       ehci_writel(ehci, INTR_MASK,
+                   &ehci->regs->intr_enable); /* Turn On Interrupts */
+--- a/drivers/usb/host/ehci-hub.c
++++ b/drivers/usb/host/ehci-hub.c
+@@ -646,7 +646,7 @@ ehci_hub_status_data (struct usb_hcd *hc
+        * always set, seem to clear PORT_OCC and PORT_CSC when writing to
+        * PORT_POWER; that's surprising, but maybe within-spec.
+        */
+-      if (!ignore_oc)
++      if (!ignore_oc && !ehci->ignore_oc)
+               mask = PORT_CSC | PORT_PEC | PORT_OCC;
+       else
+               mask = PORT_CSC | PORT_PEC;
+@@ -1016,7 +1016,7 @@ int ehci_hub_control(
+               if (temp & PORT_PEC)
+                       status |= USB_PORT_STAT_C_ENABLE << 16;
+ 
+-              if ((temp & PORT_OCC) && !ignore_oc){
++              if ((temp & PORT_OCC) && (!ignore_oc && !ehci->ignore_oc)){
+                       status |= USB_PORT_STAT_C_OVERCURRENT << 16;
+ 
+                       /*
+--- a/drivers/usb/host/ehci-platform.c
++++ b/drivers/usb/host/ehci-platform.c
+@@ -263,6 +263,8 @@ static int ehci_platform_probe(struct pl
+               hcd->has_tt = 1;
+       if (pdata->reset_on_resume)
+               priv->reset_on_resume = true;
++      if (pdata->ignore_oc)
++              ehci->ignore_oc = 1;
+ 
+ #ifndef CONFIG_USB_EHCI_BIG_ENDIAN_MMIO
+       if (ehci->big_endian_mmio) {
+--- a/drivers/usb/host/ehci.h
++++ b/drivers/usb/host/ehci.h
+@@ -231,6 +231,7 @@ struct ehci_hcd {                  /* one per controlle
+       unsigned                frame_index_bug:1; /* MosChip (AKA NetMos) */
+       unsigned                need_oc_pp_cycle:1; /* MPC834X port power */
+       unsigned                imx28_write_fix:1; /* For Freescale i.MX28 */
++      unsigned                ignore_oc:1;
+ 
+       /* required for usb32 quirk */
+       #define OHCI_CTRL_HCFS          (3 << 6)
+--- a/include/linux/usb/ehci_pdriver.h
++++ b/include/linux/usb/ehci_pdriver.h
+@@ -49,6 +49,7 @@ struct usb_ehci_pdata {
+       unsigned        no_io_watchdog:1;
+       unsigned        reset_on_resume:1;
+       unsigned        dma_mask_64:1;
++      unsigned        ignore_oc:1;
+ 
+       /* Turn on all power and clocks */
+       int (*power_on)(struct platform_device *pdev);