vasilito
dc68054305
- Restore 29 recipe symlinks (libdrm, qtbase, dbus, sddm, pipewire, etc.) - Restore 33 patches (KDE, libdrm, mesa, pipewire, sddm, wireplumber) - Restore 20+ local/scripts (audit, lint, test, build helpers) - Restore src/cook/scheduler.rs, status.rs, gnu-config/ - Restore scripts/patch-inclusion-gate.sh, run_mini1.sh, validate-collision-log.sh - Recover TLC source from HEAD (was overwritten by 0.2.3 checkout) - Recover 11 local/docs plans from HEAD (were overwritten) - Recover qt6-wayland-smoke symlink from HEAD - Fix MOTD: remove garbled ASCII art, use clean text - Update version: 0.2.0 -> 0.2.4 in os-release, motd, config - Reduce filesystem_size: 1536 -> 512 MiB - Add ABSOLUTE RULE to AGENTS.md: never delete/ignore packages - Reduce pcid scheme log verbosity: info -> debug
87 lines
2.7 KiB
C
87 lines
2.7 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* func_utils.h
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*
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* Utility definitions for USB functions
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*
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* Copyright (c) 2013 Samsung Electronics Co., Ltd.
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* http://www.samsung.com
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*
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* Author: Andrzej Pietrasiewicz <andrzejtp2010@gmail.com>
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*/
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#ifndef _FUNC_UTILS_H_
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#define _FUNC_UTILS_H_
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#include <linux/usb/gadget.h>
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#include <linux/overflow.h>
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/* Variable Length Array Macros **********************************************/
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#define vla_group(groupname) size_t groupname##__next = 0
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#define vla_group_size(groupname) groupname##__next
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#define vla_item(groupname, type, name, n) \
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size_t groupname##_##name##__offset = ({ \
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size_t offset = 0; \
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if (groupname##__next != SIZE_MAX) { \
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size_t align_mask = __alignof__(type) - 1; \
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size_t size = array_size(n, sizeof(type)); \
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offset = (groupname##__next + align_mask) & \
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~align_mask; \
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if (check_add_overflow(offset, size, \
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&groupname##__next)) { \
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groupname##__next = SIZE_MAX; \
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offset = 0; \
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} \
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} \
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offset; \
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})
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#define vla_item_with_sz(groupname, type, name, n) \
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size_t groupname##_##name##__sz = array_size(n, sizeof(type)); \
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size_t groupname##_##name##__offset = ({ \
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size_t offset = 0; \
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if (groupname##__next != SIZE_MAX) { \
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size_t align_mask = __alignof__(type) - 1; \
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offset = (groupname##__next + align_mask) & \
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~align_mask; \
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if (check_add_overflow(offset, groupname##_##name##__sz,\
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&groupname##__next)) { \
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groupname##__next = SIZE_MAX; \
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offset = 0; \
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} \
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} \
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offset; \
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})
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#define vla_ptr(ptr, groupname, name) \
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((void *) ((char *)ptr + groupname##_##name##__offset))
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struct usb_ep;
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struct usb_request;
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/**
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* alloc_ep_req - returns a usb_request allocated by the gadget driver and
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* allocates the request's buffer.
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*
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* @ep: the endpoint to allocate a usb_request
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* @len: usb_requests's buffer suggested size
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*
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* In case @ep direction is OUT, the @len will be aligned to ep's
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* wMaxPacketSize. In order to avoid memory leaks or drops, *always* use
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* usb_requests's length (req->length) to refer to the allocated buffer size.
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* Requests allocated via alloc_ep_req() *must* be freed by free_ep_req().
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*/
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struct usb_request *alloc_ep_req(struct usb_ep *ep, size_t len);
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/* Frees a usb_request previously allocated by alloc_ep_req() */
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static inline void free_ep_req(struct usb_ep *ep, struct usb_request *req)
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{
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WARN_ON(req->buf == NULL);
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kfree(req->buf);
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req->buf = NULL;
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usb_ep_free_request(ep, req);
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}
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#endif /* _FUNC_UTILS_H_ */
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