diff options
Diffstat (limited to 'target/linux/bcm27xx/patches-4.19/950-0572-usb-add-plumbing-for-updating-interrupt-endpoint-int.patch')
| -rw-r--r-- | target/linux/bcm27xx/patches-4.19/950-0572-usb-add-plumbing-for-updating-interrupt-endpoint-int.patch | 104 |
1 files changed, 0 insertions, 104 deletions
diff --git a/target/linux/bcm27xx/patches-4.19/950-0572-usb-add-plumbing-for-updating-interrupt-endpoint-int.patch b/target/linux/bcm27xx/patches-4.19/950-0572-usb-add-plumbing-for-updating-interrupt-endpoint-int.patch deleted file mode 100644 index 07e0fbd144..0000000000 --- a/target/linux/bcm27xx/patches-4.19/950-0572-usb-add-plumbing-for-updating-interrupt-endpoint-int.patch +++ /dev/null @@ -1,104 +0,0 @@ -From f9c01b35ec7ea3f981c414af38c92c508487671a Mon Sep 17 00:00:00 2001 -From: Jonathan Bell <jonathan@raspberrypi.org> -Date: Tue, 11 Jun 2019 10:55:00 +0100 -Subject: [PATCH] usb: add plumbing for updating interrupt endpoint - interval state - -xHCI caches device and endpoint data after the interface is configured, -so an explicit command needs to be issued for any device driver wanting -to alter the polling interval of an endpoint. - -Add usb_fixup_endpoint() to allow drivers to do this. The fixup must be -called after calculating endpoint bandwidth requirements but before any -URBs are submitted. - -If polling intervals are shortened, any bandwidth reservations are no -longer valid but in practice polling intervals are only ever relaxed. - -Limit the scope to interrupt transfers for now. - -Signed-off-by: Jonathan Bell <jonathan@raspberrypi.org> ---- - drivers/usb/core/hcd.c | 10 ++++++++++ - drivers/usb/core/message.c | 15 +++++++++++++++ - include/linux/usb.h | 2 ++ - include/linux/usb/hcd.h | 7 +++++++ - 4 files changed, 34 insertions(+) - ---- a/drivers/usb/core/hcd.c -+++ b/drivers/usb/core/hcd.c -@@ -2071,6 +2071,16 @@ reset: - return ret; - } - -+void usb_hcd_fixup_endpoint(struct usb_device *udev, -+ struct usb_host_endpoint *ep, int interval) -+{ -+ struct usb_hcd *hcd; -+ -+ hcd = bus_to_hcd(udev->bus); -+ if (hcd->driver->fixup_endpoint) -+ hcd->driver->fixup_endpoint(hcd, udev, ep, interval); -+} -+ - /* Disables the endpoint: synchronizes with the hcd to make sure all - * endpoint state is gone from hardware. usb_hcd_flush_endpoint() must - * have been called previously. Use for set_configuration, set_interface, ---- a/drivers/usb/core/message.c -+++ b/drivers/usb/core/message.c -@@ -1120,6 +1120,21 @@ static void remove_intf_ep_devs(struct u - intf->ep_devs_created = 0; - } - -+void usb_fixup_endpoint(struct usb_device *dev, int epaddr, int interval) -+{ -+ unsigned int epnum = epaddr & USB_ENDPOINT_NUMBER_MASK; -+ struct usb_host_endpoint *ep; -+ -+ if (usb_endpoint_out(epaddr)) -+ ep = dev->ep_out[epnum]; -+ else -+ ep = dev->ep_in[epnum]; -+ -+ if (ep && usb_endpoint_xfer_int(&ep->desc)) -+ usb_hcd_fixup_endpoint(dev, ep, interval); -+} -+EXPORT_SYMBOL_GPL(usb_fixup_endpoint); -+ - /** - * usb_disable_endpoint -- Disable an endpoint by address - * @dev: the device whose endpoint is being disabled ---- a/include/linux/usb.h -+++ b/include/linux/usb.h -@@ -1809,6 +1809,8 @@ extern int usb_clear_halt(struct usb_dev - extern int usb_reset_configuration(struct usb_device *dev); - extern int usb_set_interface(struct usb_device *dev, int ifnum, int alternate); - extern void usb_reset_endpoint(struct usb_device *dev, unsigned int epaddr); -+extern void usb_fixup_endpoint(struct usb_device *dev, int epaddr, -+ int interval); - - /* this request isn't really synchronous, but it belongs with the others */ - extern int usb_driver_set_configuration(struct usb_device *udev, int config); ---- a/include/linux/usb/hcd.h -+++ b/include/linux/usb/hcd.h -@@ -379,6 +379,11 @@ struct hc_driver { - * or bandwidth constraints. - */ - void (*reset_bandwidth)(struct usb_hcd *, struct usb_device *); -+ /* Override the endpoint-derived interval -+ * (if there is any cached hardware state). -+ */ -+ void (*fixup_endpoint)(struct usb_hcd *hcd, struct usb_device *udev, -+ struct usb_host_endpoint *ep, int interval); - /* Returns the hardware-chosen device address */ - int (*address_device)(struct usb_hcd *, struct usb_device *udev); - /* prepares the hardware to send commands to the device */ -@@ -435,6 +440,8 @@ extern void usb_hcd_unmap_urb_setup_for_ - extern void usb_hcd_unmap_urb_for_dma(struct usb_hcd *, struct urb *); - extern void usb_hcd_flush_endpoint(struct usb_device *udev, - struct usb_host_endpoint *ep); -+extern void usb_hcd_fixup_endpoint(struct usb_device *udev, -+ struct usb_host_endpoint *ep, int interval); - extern void usb_hcd_disable_endpoint(struct usb_device *udev, - struct usb_host_endpoint *ep); - extern void usb_hcd_reset_endpoint(struct usb_device *udev, |