/* * GPIO tools - utility helpers library for the GPIO tools * * Copyright (C) 2015 Linus Walleij * * Portions copied from iio_utils and lssio: * Copyright (c) 2010 Manuel Stahl * Copyright (c) 2008 Jonathan Cameron * * * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 as published by * the Free Software Foundation. */ #ifndef _GPIO_UTILS_H_ #define _GPIO_UTILS_H_ #include #define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0])) static inline int check_prefix(const char *str, const char *prefix) { return strlen(str) > strlen(prefix) && strncmp(str, prefix, strlen(prefix)) == 0; } int gpiotools_request_linehandle(const char *device_name, unsigned int *lines, unsigned int nlines, unsigned int flag, struct gpiohandle_data *data, const char *consumer_label); int gpiotools_set_values(const int fd, struct gpiohandle_data *data); int gpiotools_get_values(const int fd, struct gpiohandle_data *data); int gpiotools_release_linehandle(const int fd); int gpiotools_get(const char *device_name, unsigned int line); int gpiotools_gets(const char *device_name, unsigned int *lines, unsigned int nlines, struct gpiohandle_data *data); int gpiotools_set(const char *device_name, unsigned int line, unsigned int value); int gpiotools_sets(const char *device_name, unsigned int *lines, unsigned int nlines, struct gpiohandle_data *data); #endif /* _GPIO_UTILS_H_ */ inux/net-next.git/'>summaryrefslogtreecommitdiff
path: root/drivers/usb/serial/oti6858.h
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authorDaniel Vetter <daniel.vetter@ffwll.ch>2017-01-12 17:15:56 +0100
committerDaniel Vetter <daniel.vetter@ffwll.ch>2017-01-30 10:17:32 +0100
commite6e7b48b295afa5a5ab440de0a94d9ad8b3ce2d0 (patch)
tree77cadb6d8aad1b52c34e4afa8c9deef603bbe2ed /drivers/usb/serial/oti6858.h
parent4e5b54f127426c82dc2816340c26d951a5bb3429 (diff)
drm: Don't race connector registration
I was under the misconception that the sysfs dev stuff can be fully set up, and then registered all in one step with device_add. That's true for properties and property groups, but not for parents and child devices. Those must be fully registered before you can register a child. Add a bit of tracking to make sure that asynchronous mst connector hotplugging gets this right. For consistency we rely upon the implicit barriers of the connector->mutex, which is taken anyway, to ensure that at least either the connector or device registration call will work out. Mildly tested since I can't reliably reproduce this on my mst box here. Reported-by: Dave Hansen <dave.hansen@intel.com> Cc: Dave Hansen <dave.hansen@intel.com> Acked-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: Chris Wilson <chris@chris-wilson.co.uk> Signed-off-by: Daniel Vetter <daniel.vetter@intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/1484237756-2720-1-git-send-email-daniel.vetter@ffwll.ch
Diffstat (limited to 'drivers/usb/serial/oti6858.h')