diff options
Diffstat (limited to 'drivers/dahdi/wctdm24xxp/base.c')
| -rw-r--r-- | drivers/dahdi/wctdm24xxp/base.c | 24 |
1 files changed, 18 insertions, 6 deletions
diff --git a/drivers/dahdi/wctdm24xxp/base.c b/drivers/dahdi/wctdm24xxp/base.c index 012b5b8..637cda2 100644 --- a/drivers/dahdi/wctdm24xxp/base.c +++ b/drivers/dahdi/wctdm24xxp/base.c @@ -1526,7 +1526,14 @@ wctdm_proslic_verify_indirect_regs(struct wctdm *wc, struct wctdm_module *mod) return 0; } -/* 1ms interrupt */ +/** + * wctdm_proslic_check_oppending - + * + * Ensures that a write to the line feed register on the SLIC has been + * processed. If it hasn't after the timeout value, then it will resend the + * command and wait for another timeout period. + * + */ static void wctdm_proslic_check_oppending(struct wctdm *wc, struct wctdm_module *const mod) { @@ -1546,7 +1553,6 @@ wctdm_proslic_check_oppending(struct wctdm *wc, struct wctdm_module *const mod) if ((fxs->linefeed_control_shadow & SLIC_LF_SETMASK) == (fxs->lasttxhook & SLIC_LF_SETMASK)) { fxs->lasttxhook &= SLIC_LF_SETMASK; - fxs->oppending_ms = 0; if (debug & DEBUG_CARD) { dev_info(&wc->vb.pdev->dev, "SLIC_LF OK: card=%d shadow=%02x " @@ -1554,7 +1560,12 @@ wctdm_proslic_check_oppending(struct wctdm *wc, struct wctdm_module *const mod) fxs->linefeed_control_shadow, fxs->lasttxhook, wc->framecount); } - } else if (fxs->oppending_ms && (--fxs->oppending_ms == 0)) { + spin_unlock(&fxs->lasttxhooklock); + } else if (time_after(wc->framecount, fxs->oppending_timeout)) { + /* Check again in 100 ms */ + fxs->oppending_timeout = wc->framecount + 100; + spin_unlock(&fxs->lasttxhooklock); + wctdm_setreg_intr(wc, mod, LINE_STATE, fxs->lasttxhook); if (debug & DEBUG_CARD) { dev_info(&wc->vb.pdev->dev, @@ -1563,10 +1574,9 @@ wctdm_proslic_check_oppending(struct wctdm *wc, struct wctdm_module *const mod) fxs->linefeed_control_shadow, fxs->lasttxhook, wc->framecount); } - } else { /* Start 100ms Timeout */ - fxs->oppending_ms = 100; + } else { + spin_unlock(&fxs->lasttxhooklock); } - spin_unlock(&fxs->lasttxhooklock); } /* 256ms interrupt */ @@ -1635,6 +1645,7 @@ wctdm_proslic_recheck_sanity(struct wctdm *wc, struct wctdm_module *const mod) } fxs->lasttxhook |= SLIC_LF_OPPENDING; mod->sethook = CMD_WR(LINE_STATE, fxs->lasttxhook); + fxs->oppending_timeout = wc->framecount + 100; spin_unlock_irqrestore(&fxs->lasttxhooklock, flags); /* Update shadow register to avoid extra power alarms @@ -2065,6 +2076,7 @@ wctdm_fxs_hooksig(struct wctdm *wc, struct wctdm_module *const mod, if (x != fxs->lasttxhook) { fxs->lasttxhook = x | SLIC_LF_OPPENDING; mod->sethook = CMD_WR(LINE_STATE, fxs->lasttxhook); + fxs->oppending_timeout = wc->framecount + 100; spin_unlock_irqrestore(&fxs->lasttxhooklock, flags); if (debug & DEBUG_CARD) { |