Merge tag 'usb-3.20-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb

Pull USB patches from Greg KH:
 "Here's the big pull request for the USB driver tree for 3.20-rc1.

  Nothing major happening here, just lots of gadget driver updates, new
  device ids, and a bunch of cleanups.

  All of these have been in linux-next for a while with no reported
  issues"

* tag 'usb-3.20-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (299 commits)
  usb: musb: fix device hotplug behind hub
  usb: dwc2: Fix a bug in reading the endpoint directions from reg.
  staging: emxx_udc: fix the build error
  usb: Retry port status check on resume to work around RH bugs
  Revert "usb: Reset USB-3 devices on USB-3 link bounce"
  uhci-hub: use HUB_CHAR_*
  usb: kconfig: replace PPC_OF with PPC
  ehci-pci: disable for Intel MID platforms (update)
  usb: gadget: Kconfig: use bool instead of boolean
  usb: musb: blackfin: remove incorrect __exit_p()
  USB: fix use-after-free bug in usb_hcd_unlink_urb()
  ehci-pci: disable for Intel MID platforms
  usb: host: pci_quirks: joing string literals
  USB: add flag for HCDs that can't receive wakeup requests (isp1760-hcd)
  USB: usbfs: allow URBs to be reaped after disconnection
  cdc-acm: kill unnecessary messages
  cdc-acm: add sanity checks
  usb: phy: phy-generic: Fix USB PHY gpio reset
  usb: dwc2: fix USB core dependencies
  usb: renesas_usbhs: fix NULL pointer dereference in dma_release_channel()
  ...

1 files changed, 22 insertions, 3 deletions

diff --git a/drivers/usb/renesas_usbhs/fifo.c b/drivers/usb/renesas_usbhs/fifo.c
index f46271ce1b15..d891bff39d66 100644
--- a/drivers/usb/renesas_usbhs/fifo.c
+++ b/drivers/usb/renesas_usbhs/fifo.c
@@ -1054,10 +1054,8 @@ static void usbhsf_dma_quit(struct usbhs_priv *priv, struct usbhs_fifo *fifo)
         fifo->rx_chan = NULL;
 }
 
-static void usbhsf_dma_init(struct usbhs_priv *priv,
-                            struct usbhs_fifo *fifo)
+static void usbhsf_dma_init_pdev(struct usbhs_fifo *fifo)
 {
-        struct device *dev = usbhs_priv_to_dev(priv);
         dma_cap_mask_t mask;
 
         dma_cap_zero(mask);
@@ -1069,6 +1067,27 @@ static void usbhsf_dma_init(struct usbhs_priv *priv,
         dma_cap_set(DMA_SLAVE, mask);
         fifo->rx_chan = dma_request_channel(mask, usbhsf_dma_filter,
                                             &fifo->rx_slave);
+}
+
+static void usbhsf_dma_init_dt(struct device *dev, struct usbhs_fifo *fifo)
+{
+        fifo->tx_chan = dma_request_slave_channel_reason(dev, "tx");
+        if (IS_ERR(fifo->tx_chan))
+                fifo->tx_chan = NULL;
+        fifo->rx_chan = dma_request_slave_channel_reason(dev, "rx");
+        if (IS_ERR(fifo->rx_chan))
+                fifo->rx_chan = NULL;
+}
+
+static void usbhsf_dma_init(struct usbhs_priv *priv,
+                            struct usbhs_fifo *fifo)
+{
+        struct device *dev = usbhs_priv_to_dev(priv);
+
+        if (dev->of_node)
+                usbhsf_dma_init_dt(dev, fifo);
+        else
+                usbhsf_dma_init_pdev(fifo);
 
         if (fifo->tx_chan || fifo->rx_chan)
                 dev_dbg(dev, "enable DMAEngine (%s%s%s)\n",