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| author | Stanislaw Gruszka <stf_xl@wp.pl> | 2007-08-20 23:21:14 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2007-10-12 14:55:17 -0700 |
| commit | 337427f91f844ebe84442dc0b5e24577a8139600 (patch) | |
| tree | 2ebc6b749cca390c43f22bead7837bd7d26a4fe4 /drivers/usb/atm/ueagle-atm.c | |
| parent | 04ea02f5746a2e01a38edae2de3eafc40eac17aa (diff) | |
| download | kernel_samsung_smdk4412-337427f91f844ebe84442dc0b5e24577a8139600.zip kernel_samsung_smdk4412-337427f91f844ebe84442dc0b5e24577a8139600.tar.gz kernel_samsung_smdk4412-337427f91f844ebe84442dc0b5e24577a8139600.tar.bz2 | |
UEAGLE: Do not sleep when device is disconnected
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>
Diffstat (limited to 'drivers/usb/atm/ueagle-atm.c')
| -rw-r--r-- | drivers/usb/atm/ueagle-atm.c | 27 |
1 files changed, 19 insertions, 8 deletions
diff --git a/drivers/usb/atm/ueagle-atm.c b/drivers/usb/atm/ueagle-atm.c index 648c6b7..4aa41a9 100644 --- a/drivers/usb/atm/ueagle-atm.c +++ b/drivers/usb/atm/ueagle-atm.c @@ -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) { |