Commit d9d2401f authored by Dmitry Torokhov's avatar Dmitry Torokhov Committed by Jiri Kosina

greybus: hid: remove custom locking from gb_hid_open/close

Now that HID core enforces serialization of transport driver open/close
calls we can remove custom locking from greybus hid driver.
Signed-off-by: default avatarDmitry Torokhov <dmitry.torokhov@gmail.com>
Acked-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: default avatarViresh Kumar <viresh.kumar@linaro.org>
Reviewed-by: default avatarAndy Shevchenko <andy.shevchenko@gmail.com>
Reviewed-by: default avatarBenjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: default avatarJiri Kosina <jkosina@suse.cz>
parent e399396a
......@@ -32,8 +32,6 @@ struct gb_hid {
char *inbuf;
};
static DEFINE_MUTEX(gb_hid_open_mutex);
/* Routines to get controller's information over greybus */
/* Operations performed on greybus */
......@@ -346,19 +344,14 @@ static void gb_hid_stop(struct hid_device *hid)
static int gb_hid_open(struct hid_device *hid)
{
struct gb_hid *ghid = hid->driver_data;
int ret = 0;
int ret;
mutex_lock(&gb_hid_open_mutex);
if (!hid->open++) {
ret = gb_hid_set_power(ghid, GB_HID_TYPE_PWR_ON);
if (ret < 0)
hid->open--;
else
set_bit(GB_HID_STARTED, &ghid->flags);
}
mutex_unlock(&gb_hid_open_mutex);
return ret;
set_bit(GB_HID_STARTED, &ghid->flags);
return 0;
}
static void gb_hid_close(struct hid_device *hid)
......@@ -366,12 +359,6 @@ static void gb_hid_close(struct hid_device *hid)
struct gb_hid *ghid = hid->driver_data;
int ret;
/*
* Protecting hid->open to make sure we don't restart data acquistion
* due to a resumption we no longer care about..
*/
mutex_lock(&gb_hid_open_mutex);
if (!--hid->open) {
clear_bit(GB_HID_STARTED, &ghid->flags);
/* Save some power */
......@@ -379,8 +366,6 @@ static void gb_hid_close(struct hid_device *hid)
if (ret)
dev_err(&ghid->connection->bundle->dev,
"failed to power off (%d)\n", ret);
}
mutex_unlock(&gb_hid_open_mutex);
}
static int gb_hid_power(struct hid_device *hid, int lvl)
......
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