Merge tag 'usb-for-v5.1' of git://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb into usb-next

Felipe writes:

USB: changes for v5.1 merge window

Dwc3 now works on TI's AM6xx platforms. Also on dwc3 we have a few
changes which improve request cancellation and some improvements to
how we print to the trace buffer.

Renesas_usb3 got support for r8a774c0 device.

Dwc2 got scatter-gather support.

Apart from these, the usual set of minor fixes and all sorts of small
details.

* tag 'usb-for-v5.1' of git://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb: (40 commits)
  usb: phy: twl6030-usb: fix possible use-after-free on remove
  usb: misc: usbtest: add super-speed isoc support
  usb: dwc3: Reset num_trbs after skipping
  usb: dwc3: gadget: don't enable interrupt when disabling endpoint
  fotg210-udc: pass struct device to DMA API functions
  fotg210-udc: remove a bogus dma_sync_single_for_device call
  usb: gadget: Change Andrzej Pietrasiewicz's e-mail address
  usb: f_fs: Avoid crash due to out-of-scope stack ptr access
  usb: dwc3: haps: Workaround matching VID PID
  usb: gadget: f_fs: preserve wMaxPacketSize across usb_ep_autoconfig() call
  usb: gadget: move non-super speed code out of usb_ep_autoconfig_ss()
  usb: gadget: function: sync f_uac1 ac header baInterfaceNr
  usb: dwc2: gadget: Add scatter-gather mode
  usb: gadget: fix various indentation issues
  usb: dwc2: Fix EP TxFIFO number setting
  udc: net2280: Fix net2280_disable
  USB: gadget: Improve kerneldoc for usb_ep_dequeue()
  usb: dwc3: debug: purge usage of strcat
  usb: dwc3: trace: pass trace buffer size to decoding functions
  usb: dwc3: gadget: remove DWC3_EP_END_TRANSFER_PENDING
  ...

1 files changed, 24 insertions, 4 deletions

diff --git a/drivers/usb/misc/usbtest.c b/drivers/usb/misc/usbtest.c
index c7f82310e73e..98ada1a3425c 100644
--- a/drivers/usb/misc/usbtest.c
+++ b/drivers/usb/misc/usbtest.c
@@ -347,6 +347,14 @@ static unsigned get_maxpacket(struct usb_device *udev, int pipe)
 	return le16_to_cpup(&ep->desc.wMaxPacketSize);
 }
 
+static int ss_isoc_get_packet_num(struct usb_device *udev, int pipe)
+{
+	struct usb_host_endpoint *ep = usb_pipe_endpoint(udev, pipe);
+
+	return USB_SS_MULT(ep->ss_ep_comp.bmAttributes)
+		* (1 + ep->ss_ep_comp.bMaxBurst);
+}
+
 static void simple_fill_buf(struct urb *urb)
 {
 	unsigned	i;
@@ -1976,8 +1984,13 @@ static struct urb *iso_alloc_urb(
 
 	if (bytes < 0 || !desc)
 		return NULL;
+
 	maxp = usb_endpoint_maxp(desc);
-	maxp *= usb_endpoint_maxp_mult(desc);
+	if (udev->speed >= USB_SPEED_SUPER)
+		maxp *= ss_isoc_get_packet_num(udev, pipe);
+	else
+		maxp *= usb_endpoint_maxp_mult(desc);
+
 	packets = DIV_ROUND_UP(bytes, maxp);
 
 	urb = usb_alloc_urb(packets, GFP_KERNEL);
@@ -2065,17 +2078,24 @@ test_queue(struct usbtest_dev *dev, struct usbtest_param_32 *param,
 	packets *= param->iterations;
 
 	if (context.is_iso) {
+		int transaction_num;
+
+		if (udev->speed >= USB_SPEED_SUPER)
+			transaction_num = ss_isoc_get_packet_num(udev, pipe);
+		else
+			transaction_num = usb_endpoint_maxp_mult(desc);
+
 		dev_info(&dev->intf->dev,
 			"iso period %d %sframes, wMaxPacket %d, transactions: %d\n",
 			1 << (desc->bInterval - 1),
-			(udev->speed == USB_SPEED_HIGH) ? "micro" : "",
+			(udev->speed >= USB_SPEED_HIGH) ? "micro" : "",
 			usb_endpoint_maxp(desc),
-			usb_endpoint_maxp_mult(desc));
+			transaction_num);
 
 		dev_info(&dev->intf->dev,
 			"total %lu msec (%lu packets)\n",
 			(packets * (1 << (desc->bInterval - 1)))
-				/ ((udev->speed == USB_SPEED_HIGH) ? 8 : 1),
+				/ ((udev->speed >= USB_SPEED_HIGH) ? 8 : 1),
 			packets);
 	}