From 2f7c68cb55ecb7331f2381deb497c27155f32faf Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Wed, 03 Jan 2024 09:43:39 +0000
Subject: [PATCH] update kernel to 5.10.198
---
kernel/drivers/usb/core/usb.c | 76 ++++++++++++++++++++++++++++++++++++++
1 files changed, 76 insertions(+), 0 deletions(-)
diff --git a/kernel/drivers/usb/core/usb.c b/kernel/drivers/usb/core/usb.c
index db4de53..c4cd9d4 100644
--- a/kernel/drivers/usb/core/usb.c
+++ b/kernel/drivers/usb/core/usb.c
@@ -208,6 +208,82 @@
EXPORT_SYMBOL_GPL(usb_find_common_endpoints_reverse);
/**
+ * usb_find_endpoint() - Given an endpoint address, search for the endpoint's
+ * usb_host_endpoint structure in an interface's current altsetting.
+ * @intf: the interface whose current altsetting should be searched
+ * @ep_addr: the endpoint address (number and direction) to find
+ *
+ * Search the altsetting's list of endpoints for one with the specified address.
+ *
+ * Return: Pointer to the usb_host_endpoint if found, %NULL otherwise.
+ */
+static const struct usb_host_endpoint *usb_find_endpoint(
+ const struct usb_interface *intf, unsigned int ep_addr)
+{
+ int n;
+ const struct usb_host_endpoint *ep;
+
+ n = intf->cur_altsetting->desc.bNumEndpoints;
+ ep = intf->cur_altsetting->endpoint;
+ for (; n > 0; (--n, ++ep)) {
+ if (ep->desc.bEndpointAddress == ep_addr)
+ return ep;
+ }
+ return NULL;
+}
+
+/**
+ * usb_check_bulk_endpoints - Check whether an interface's current altsetting
+ * contains a set of bulk endpoints with the given addresses.
+ * @intf: the interface whose current altsetting should be searched
+ * @ep_addrs: 0-terminated array of the endpoint addresses (number and
+ * direction) to look for
+ *
+ * Search for endpoints with the specified addresses and check their types.
+ *
+ * Return: %true if all the endpoints are found and are bulk, %false otherwise.
+ */
+bool usb_check_bulk_endpoints(
+ const struct usb_interface *intf, const u8 *ep_addrs)
+{
+ const struct usb_host_endpoint *ep;
+
+ for (; *ep_addrs; ++ep_addrs) {
+ ep = usb_find_endpoint(intf, *ep_addrs);
+ if (!ep || !usb_endpoint_xfer_bulk(&ep->desc))
+ return false;
+ }
+ return true;
+}
+EXPORT_SYMBOL_GPL(usb_check_bulk_endpoints);
+
+/**
+ * usb_check_int_endpoints - Check whether an interface's current altsetting
+ * contains a set of interrupt endpoints with the given addresses.
+ * @intf: the interface whose current altsetting should be searched
+ * @ep_addrs: 0-terminated array of the endpoint addresses (number and
+ * direction) to look for
+ *
+ * Search for endpoints with the specified addresses and check their types.
+ *
+ * Return: %true if all the endpoints are found and are interrupt,
+ * %false otherwise.
+ */
+bool usb_check_int_endpoints(
+ const struct usb_interface *intf, const u8 *ep_addrs)
+{
+ const struct usb_host_endpoint *ep;
+
+ for (; *ep_addrs; ++ep_addrs) {
+ ep = usb_find_endpoint(intf, *ep_addrs);
+ if (!ep || !usb_endpoint_xfer_int(&ep->desc))
+ return false;
+ }
+ return true;
+}
+EXPORT_SYMBOL_GPL(usb_check_int_endpoints);
+
+/**
* usb_find_alt_setting() - Given a configuration, find the alternate setting
* for the given interface.
* @config: the configuration to search (not necessarily the current config).
--
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