diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/misc/ti-st/st_core.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/drivers/misc/ti-st/st_core.c b/drivers/misc/ti-st/st_core.c index dd2c879faff6..f0d24d852078 100644 --- a/drivers/misc/ti-st/st_core.c +++ b/drivers/misc/ti-st/st_core.c @@ -236,6 +236,7 @@ void st_int_recv(void *disc_data, int len = 0, type = 0; unsigned char *plen; struct st_data_s *st_gdata = (struct st_data_s *)disc_data; + unsigned long flags; ptr = (char *)data; /* tty_receive sent null ? */ @@ -248,6 +249,7 @@ void st_int_recv(void *disc_data, "rx_count %ld", count, st_gdata->rx_state, st_gdata->rx_count); + spin_lock_irqsave(&st_gdata->lock, flags); /* Decode received bytes here */ while (count) { if (st_gdata->rx_count) { @@ -308,13 +310,25 @@ void st_int_recv(void *disc_data, * sleep state received -- */ st_ll_sleep_state(st_gdata, *ptr); + /* if WAKEUP_IND collides copy from waitq to txq + * and assume chip awake + */ + spin_unlock_irqrestore(&st_gdata->lock, flags); + if (st_ll_getstate(st_gdata) == ST_LL_AWAKE) + st_wakeup_ack(st_gdata, LL_WAKE_UP_ACK); + spin_lock_irqsave(&st_gdata->lock, flags); + ptr++; count--; continue; case LL_WAKE_UP_ACK: pr_debug("PM packet"); + + spin_unlock_irqrestore(&st_gdata->lock, flags); /* wake up ack received */ st_wakeup_ack(st_gdata, *ptr); + spin_lock_irqsave(&st_gdata->lock, flags); + ptr++; count--; continue; @@ -337,6 +351,7 @@ void st_int_recv(void *disc_data, ptr++; count--; } + spin_unlock_irqrestore(&st_gdata->lock, flags); pr_debug("done %s", __func__); return; } |