diff options
| author | Tony Lindgren <tony@atomide.com> | 2019-10-09 09:50:06 -0700 |
|---|---|---|
| committer | Kalle Valo <kvalo@codeaurora.org> | 2019-10-11 11:55:40 +0300 |
| commit | 4633d30b61ac1415817b954c3d4d241ca7439a7c (patch) | |
| tree | 9320354c9b87ba85910fdd4710bf5e2dedae960d /drivers/net/wireless/ti | |
| parent | 59f4567d228f7f5686e0f91d30e6aeaca999e2fd (diff) | |
wlcore: clean-up clearing of WL1271_FLAG_IRQ_RUNNING
We set WL1271_FLAG_IRQ_RUNNING in the beginning of wlcore_irq(), but clear
it before interrupt handling is done in wlcore_irq_locked().
Let's move the clearing to the end of wlcore_irq() where it gets set,
and remove the old comments about hardirq. That's no longer the case as
we're using request_threaded_irq().
Note that the WL1271_FLAG_IRQ_RUNNING should never race between the
interrupt handler and wlcore_runtime_resume() as because of autosuspend
timeout we cannot enter idle between wlcore_irq_locked() and the end of
wlcore_irq().
Cc: Anders Roxell <anders.roxell@linaro.org>
Cc: Eyal Reizer <eyalr@ti.com>
Cc: Guy Mishol <guym@ti.com>
Cc: John Stultz <john.stultz@linaro.org>
Cc: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Diffstat (limited to 'drivers/net/wireless/ti')
| -rw-r--r-- | drivers/net/wireless/ti/wlcore/main.c | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/drivers/net/wireless/ti/wlcore/main.c b/drivers/net/wireless/ti/wlcore/main.c index 123afbe10f44..e994995d79ab 100644 --- a/drivers/net/wireless/ti/wlcore/main.c +++ b/drivers/net/wireless/ti/wlcore/main.c @@ -544,11 +544,6 @@ static int wlcore_irq_locked(struct wl1271 *wl) } while (!done && loopcount--) { - /* - * In order to avoid a race with the hardirq, clear the flag - * before acknowledging the chip. - */ - clear_bit(WL1271_FLAG_IRQ_RUNNING, &wl->flags); smp_mb__after_atomic(); ret = wlcore_fw_status(wl, wl->fw_status); @@ -668,7 +663,7 @@ static irqreturn_t wlcore_irq(int irq, void *cookie) disable_irq_nosync(wl->irq); pm_wakeup_event(wl->dev, 0); spin_unlock_irqrestore(&wl->wl_lock, flags); - return IRQ_HANDLED; + goto out_handled; } spin_unlock_irqrestore(&wl->wl_lock, flags); @@ -692,6 +687,11 @@ static irqreturn_t wlcore_irq(int irq, void *cookie) mutex_unlock(&wl->mutex); +out_handled: + spin_lock_irqsave(&wl->wl_lock, flags); + clear_bit(WL1271_FLAG_IRQ_RUNNING, &wl->flags); + spin_unlock_irqrestore(&wl->wl_lock, flags); + return IRQ_HANDLED; } |