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Subject[patch 06/24] sonypi: make sure input_work is not running when unloading
Sonypi: make sure that input_work is not running when unloading
the module; submit/retrieve key release data into/from
input_fifo in one shot.

Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
---
drivers/char/sonypi.c | 122 +++++++++++++++++++++++++-------------------------
1 files changed, 63 insertions(+), 59 deletions(-)
Index: work/drivers/char/sonypi.c
===================================================================
--- work.orig/drivers/char/sonypi.c
+++ work/drivers/char/sonypi.c
@@ -439,6 +439,11 @@ static struct {
{ 0, 0 },
};

+struct sonypi_keypress {
+ struct input_dev *dev;
+ int key;
+};
+
static struct sonypi_device {
struct pci_dev *dev;
struct platform_device *pdev;
@@ -710,22 +715,61 @@ static void sonypi_setbluetoothpower(u8

static void input_keyrelease(void *data)
{
- struct input_dev *input_dev;
- int key;
-
- while (1) {
- if (kfifo_get(sonypi_device.input_fifo,
- (unsigned char *)&input_dev,
- sizeof(input_dev)) != sizeof(input_dev))
- return;
- if (kfifo_get(sonypi_device.input_fifo,
- (unsigned char *)&key,
- sizeof(key)) != sizeof(key))
- return;
+ struct sonypi_keypress kp;

+ while (kfifo_get(sonypi_device.input_fifo, (unsigned char *)&kp,
+ sizeof(kp)) == sizeof(kp)) {
msleep(10);
- input_report_key(input_dev, key, 0);
- input_sync(input_dev);
+ input_report_key(kp.dev, kp.key, 0);
+ input_sync(kp.dev);
+ }
+}
+
+static void sonypi_report_input_event(u8 event)
+{
+ struct input_dev *jog_dev = &sonypi_device.input_jog_dev;
+ struct input_dev *key_dev = &sonypi_device.input_key_dev;
+ struct sonypi_keypress kp = { NULL };
+ int i;
+
+ switch (event) {
+ case SONYPI_EVENT_JOGDIAL_UP:
+ case SONYPI_EVENT_JOGDIAL_UP_PRESSED:
+ input_report_rel(jog_dev, REL_WHEEL, 1);
+ input_sync(jog_dev);
+ break;
+
+ case SONYPI_EVENT_JOGDIAL_DOWN:
+ case SONYPI_EVENT_JOGDIAL_DOWN_PRESSED:
+ input_report_rel(jog_dev, REL_WHEEL, -1);
+ input_sync(jog_dev);
+ break;
+
+ case SONYPI_EVENT_JOGDIAL_PRESSED:
+ kp.key = BTN_MIDDLE;
+ kp.dev = jog_dev;
+ break;
+
+ case SONYPI_EVENT_FNKEY_RELEASED:
+ /* Nothing, not all VAIOs generate this event */
+ break;
+
+ default:
+ for (i = 0; sonypi_inputkeys[i].sonypiev; i++)
+ if (event == sonypi_inputkeys[i].sonypiev) {
+ kp.dev = key_dev;
+ kp.key = sonypi_inputkeys[i].inputev;
+ break;
+ }
+ break;
+ }
+
+ if (kp.dev) {
+ input_report_key(kp.dev, kp.key, 1);
+ input_sync(kp.dev);
+ kfifo_put(sonypi_device.input_fifo,
+ (unsigned char *)&kp, sizeof(kp));
+ schedule_work(&sonypi_device.input_work);
}
}

@@ -768,51 +812,8 @@ found:
printk(KERN_INFO
"sonypi: event port1=0x%02x,port2=0x%02x\n", v1, v2);

- if (useinput) {
- struct input_dev *input_jog_dev = &sonypi_device.input_jog_dev;
- struct input_dev *input_key_dev = &sonypi_device.input_key_dev;
- switch (event) {
- case SONYPI_EVENT_JOGDIAL_UP:
- case SONYPI_EVENT_JOGDIAL_UP_PRESSED:
- input_report_rel(input_jog_dev, REL_WHEEL, 1);
- break;
- case SONYPI_EVENT_JOGDIAL_DOWN:
- case SONYPI_EVENT_JOGDIAL_DOWN_PRESSED:
- input_report_rel(input_jog_dev, REL_WHEEL, -1);
- break;
- case SONYPI_EVENT_JOGDIAL_PRESSED: {
- int key = BTN_MIDDLE;
- input_report_key(input_jog_dev, key, 1);
- kfifo_put(sonypi_device.input_fifo,
- (unsigned char *)&input_jog_dev,
- sizeof(input_jog_dev));
- kfifo_put(sonypi_device.input_fifo,
- (unsigned char *)&key, sizeof(key));
- break;
- }
- case SONYPI_EVENT_FNKEY_RELEASED:
- /* Nothing, not all VAIOs generate this event */
- break;
- }
- input_sync(input_jog_dev);
-
- for (i = 0; sonypi_inputkeys[i].sonypiev; i++) {
- int key;
-
- if (event != sonypi_inputkeys[i].sonypiev)
- continue;
-
- key = sonypi_inputkeys[i].inputev;
- input_report_key(input_key_dev, key, 1);
- kfifo_put(sonypi_device.input_fifo,
- (unsigned char *)&input_key_dev,
- sizeof(input_key_dev));
- kfifo_put(sonypi_device.input_fifo,
- (unsigned char *)&key, sizeof(key));
- }
- input_sync(input_key_dev);
- schedule_work(&sonypi_device.input_work);
- }
+ if (useinput)
+ sonypi_report_input_event(event);

kfifo_put(sonypi_device.fifo, (unsigned char *)&event, sizeof(event));
kill_fasync(&sonypi_device.fifo_async, SIGIO, POLL_IN);
@@ -1337,6 +1338,9 @@ static void __devexit sonypi_remove(void
{
sonypi_disable();

+ synchronize_sched(); /* Allow sonypi interrupt to complete. */
+ flush_scheduled_work();
+
platform_device_unregister(sonypi_device.pdev);

if (useinput) {
-
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