redonkable/remarkable-linux
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HID: sony: Fix work queue issues.

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Don't initialize force-feedback for devices that don't support it to avoid calls
to schedule_work() with an uninitialized work_struct.

Move the cancel_work_sync() call out of sony_destroy_ff() since the state worker
is used for the LEDs even when force-feedback is disabled.

Remove sony_destroy_ff() to avoid a compiler warning since it is no longer used.

Signed-off-by: Frank Praznik <frank.praznik@oh.rr.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
This commit is contained in:
Frank Praznik 2014-02-19 13:09:22 -05:00 committed by Jiri Kosina
parent 3ccfd0a8d7
commit 5f5750d2e4
1 changed files with 12 additions and 15 deletions
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27
drivers/hid/hid-sony.c
View file

@ -42,6 +42,7 @@
#define DUALSHOCK4_CONTROLLER_BT BIT(6)
#define SONY_LED_SUPPORT (SIXAXIS_CONTROLLER_USB | BUZZ_CONTROLLER | DUALSHOCK4_CONTROLLER_USB)
#define SONY_FF_SUPPORT (SIXAXIS_CONTROLLER_USB | DUALSHOCK4_CONTROLLER_USB)
#define MAX_LEDS 4
@ -499,6 +500,7 @@ struct sony_sc {
__u8 right;
#endif
__u8 worker_initialized;
__u8 led_state[MAX_LEDS];
__u8 led_count;
};
@ -993,22 +995,11 @@ static int sony_init_ff(struct hid_device *hdev)
return input_ff_create_memless(input_dev, NULL, sony_play_effect);
}
static void sony_destroy_ff(struct hid_device *hdev)
{
struct sony_sc *sc = hid_get_drvdata(hdev);
cancel_work_sync(&sc->state_worker);
}
#else
static int sony_init_ff(struct hid_device *hdev)
{
return 0;
}
static void sony_destroy_ff(struct hid_device *hdev)
{
}
#endif
static int sony_set_output_report(struct sony_sc *sc, int req_id, int req_size)
@ -1077,6 +1068,8 @@ static int sony_probe(struct hid_device *hdev, const struct hid_device_id *id)
if (sc->quirks & SIXAXIS_CONTROLLER_USB) {
hdev->hid_output_raw_report = sixaxis_usb_output_raw_report;
ret = sixaxis_set_operational_usb(hdev);
sc->worker_initialized = 1;
INIT_WORK(&sc->state_worker, sixaxis_state_worker);
}
else if (sc->quirks & SIXAXIS_CONTROLLER_BT)
@ -1087,6 +1080,7 @@ static int sony_probe(struct hid_device *hdev, const struct hid_device_id *id)
if (ret < 0)
goto err_stop;
sc->worker_initialized = 1;
INIT_WORK(&sc->state_worker, dualshock4_state_worker);
} else {
ret = 0;
@ -1101,9 +1095,11 @@ static int sony_probe(struct hid_device *hdev, const struct hid_device_id *id)
goto err_stop;
}
ret = sony_init_ff(hdev);
if (ret < 0)
goto err_stop;
if (sc->quirks & SONY_FF_SUPPORT) {
ret = sony_init_ff(hdev);
if (ret < 0)
goto err_stop;
}
return 0;
err_stop:
@ -1120,7 +1116,8 @@ static void sony_remove(struct hid_device *hdev)
if (sc->quirks & SONY_LED_SUPPORT)
sony_leds_remove(hdev);
sony_destroy_ff(hdev);
if (sc->worker_initialized)
cancel_work_sync(&sc->state_worker);
hid_hw_stop(hdev);
}