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/*
 * Subject to the GPL, version 2.
 */

#include "xmalloc.h"

struct panic_handler {
	void *arg;
	pid_t pid;
	bool is_enabled;
	void (*on_panic)(void *arg);
	struct panic_handler *next;
};

static struct panic_handler *panic_handlers;

void panic_handler_add(void (*on_panic)(void *arg), void *arg)
{
	struct panic_handler *handler = xmallocz(sizeof(*handler));

	handler->arg		= arg;
	handler->pid		= getpid();
	handler->is_enabled	= true;
	handler->on_panic	= on_panic;
	handler->next		= panic_handlers;
	panic_handlers		= handler;
};

void call_panic_handlers(void)
{
	struct panic_handler *it;
	pid_t pid = getpid();

	for (it = panic_handlers; it; it = it->next) {
		if (it->pid == pid && it->is_enabled) {
			it->is_enabled = false;
			it->on_panic(it->arg);
		}
	}
}
7c7467423db4c62aeed3ff4cae3'>drivers/usb/chipidea parent7a7b5df84b6b4e5d599c7289526eed96541a0654 (diff)
HID: cp2112: fix gpio-callback error handling
In case of a zero-length report, the gpio direction_input callback would currently return success instead of an errno. Fixes: 1ffb3c40ffb5 ("HID: cp2112: make transfer buffers DMA capable") Cc: stable <stable@vger.kernel.org> # 4.9 Signed-off-by: Johan Hovold <johan@kernel.org> Reviewed-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Diffstat (limited to 'drivers/usb/chipidea')