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UEAGLE: Do not sleep when device is disconnected

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Do not sleep in kernel thread when device is disconnected, this make faster
suspending and module unloading. Use one wait queue for sleeping.

Signed-off-by: Stanislaw Gruszka <stf_xl@wp.pl>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Stanislaw Gruszka 2007-08-20 23:21:14 +02:00 committed by Greg Kroah-Hartman
parent 04ea02f574
commit 337427f91f
1 changed files with 19 additions and 8 deletions
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27
drivers/usb/atm/ueagle-atm.c
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@ -161,7 +161,6 @@ struct uea_softc {
struct task_struct *kthread;
u32 data;
u32 data1;
wait_queue_head_t cmv_ack_wait;
int cmv_ack;
union cmv_dsc cmv_dsc;
@ -558,6 +557,15 @@ module_param_array(annex, uint, NULL, 0644);
MODULE_PARM_DESC(annex,
"manually set annex a/b (0=auto, 1=annex a, 2=annex b)");
#define uea_wait(sc, cond, timeo) \
({ \
int _r = wait_event_interruptible_timeout(sc->sync_q, \
(cond) || kthread_should_stop(), timeo); \
if (kthread_should_stop()) \
_r = -ENODEV; \
_r; \
})
#define UPDATE_ATM_STAT(type, val) \
do { \
if (sc->usbatm->atm_dev) \
@ -1067,13 +1075,13 @@ static inline void wake_up_cmv_ack(struct uea_softc *sc)
{
BUG_ON(sc->cmv_ack);
sc->cmv_ack = 1;
wake_up(&sc->cmv_ack_wait);
wake_up(&sc->sync_q);
}
static inline int wait_cmv_ack(struct uea_softc *sc)
{
int ret = wait_event_interruptible_timeout(sc->cmv_ack_wait,
sc->cmv_ack, ACK_TIMEOUT);
int ret = uea_wait(sc, sc->cmv_ack , ACK_TIMEOUT);
sc->cmv_ack = 0;
uea_dbg(INS_TO_USBDEV(sc), "wait_event_timeout : %d ms\n",
@ -1806,7 +1814,9 @@ static int uea_start_reset(struct uea_softc *sc)
uea_request(sc, UEA_SET_MODE, UEA_START_RESET, 0, NULL);
/* original driver use 200ms, but windows driver use 100ms */
msleep(100);
ret = uea_wait(sc, 0, msecs_to_jiffies(100));
if (ret < 0)
return ret;
/* leave reset mode */
uea_request(sc, UEA_SET_MODE, UEA_END_RESET, 0, NULL);
@ -1818,7 +1828,9 @@ static int uea_start_reset(struct uea_softc *sc)
uea_request(sc, UEA_SET_2183_DATA, UEA_SWAP_MAILBOX, 2, &zero);
}
msleep(1000);
ret = uea_wait(sc, 0, msecs_to_jiffies(1000));
if (ret < 0)
return ret;
if (UEA_CHIP_VERSION(sc) == EAGLE_IV)
sc->cmv_dsc.e4.function = E4_MAKEFUNCTION(E4_ADSLDIRECTIVE, E4_MODEMREADY, 1);
@ -1868,7 +1880,7 @@ static int uea_kthread(void *data)
if (!ret)
ret = sc->stat(sc);
if (ret != -EAGAIN)
msleep_interruptible(1000);
uea_wait(sc, 0, msecs_to_jiffies(1000));
if (try_to_freeze())
uea_err(INS_TO_USBDEV(sc), "suspend/resume not supported, "
"please unplug/replug your modem\n");
@ -2116,7 +2128,6 @@ static int uea_boot(struct uea_softc *sc)
}
init_waitqueue_head(&sc->sync_q);
init_waitqueue_head(&sc->cmv_ack_wait);
sc->work_q = create_workqueue("ueagle-dsp");
if (!sc->work_q) {