Revision 6b956af0807a88c79d53e0cb2a3170a2b03e3230 authored by Michal Simek on 25 June 2015, 08:29:19 UTC, committed by Linus Walleij on 16 July 2015, 11:00:43 UTC
Add missing pm_runtime_disabled to remove(). Error log: root@zynqmp:~# modprobe gpio_zynq root@zynqmp:~# lsmod Not tainted gpio_zynq 7086 0 - Live 0xffffffbffc00a000 root@zynqmp:~# rmmod gpio_zynq root@zynqmp:~# lsmod Not tainted root@zynqmp:~# modprobe gpio_zynq [ 246.924438] zynq-gpio ff0a0000.gpio: Unbalanced pm_runtime_enable! root@zynqmp:~# rmmod gpio_zynq root@zynqmp:~# lsmod Not tainted Signed-off-by: Michal Simek <michal.simek@xilinx.com> Reviewed-by: Alexandre Courbot <acourbot@nvidia.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
1 parent 977bd8a
user-return-notifier.c
#include <linux/user-return-notifier.h>
#include <linux/percpu.h>
#include <linux/sched.h>
#include <linux/export.h>
static DEFINE_PER_CPU(struct hlist_head, return_notifier_list);
/*
* Request a notification when the current cpu returns to userspace. Must be
* called in atomic context. The notifier will also be called in atomic
* context.
*/
void user_return_notifier_register(struct user_return_notifier *urn)
{
set_tsk_thread_flag(current, TIF_USER_RETURN_NOTIFY);
hlist_add_head(&urn->link, this_cpu_ptr(&return_notifier_list));
}
EXPORT_SYMBOL_GPL(user_return_notifier_register);
/*
* Removes a registered user return notifier. Must be called from atomic
* context, and from the same cpu registration occurred in.
*/
void user_return_notifier_unregister(struct user_return_notifier *urn)
{
hlist_del(&urn->link);
if (hlist_empty(this_cpu_ptr(&return_notifier_list)))
clear_tsk_thread_flag(current, TIF_USER_RETURN_NOTIFY);
}
EXPORT_SYMBOL_GPL(user_return_notifier_unregister);
/* Calls registered user return notifiers */
void fire_user_return_notifiers(void)
{
struct user_return_notifier *urn;
struct hlist_node *tmp2;
struct hlist_head *head;
head = &get_cpu_var(return_notifier_list);
hlist_for_each_entry_safe(urn, tmp2, head, link)
urn->on_user_return(urn);
put_cpu_var(return_notifier_list);
}
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