74 lines
2.4 KiB
Diff
74 lines
2.4 KiB
Diff
Sometimes a tx_flush during suspend fails, but the FW manages to flush
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out the packets during the time when the host is supsended. Cancel
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the Tx-watchdog on suspend to not cause a spurious recovery on resume
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for that case. Set a flag to reinit the watchdog on the first Tx after
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resume, so we'll still recover if the FW is not empty and there's
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indeed a problem.
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Signed-off-by: Arik Nemtsov <arik@wizery.com>
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Signed-off-by: Eliad Peller <eliad@wizery.com>
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---
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drivers/net/wireless/ti/wlcore/main.c | 13 +++++++++++++
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drivers/net/wireless/ti/wlcore/tx.c | 9 +++++++--
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drivers/net/wireless/ti/wlcore/wlcore_i.h | 1 +
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3 files changed, 21 insertions(+), 2 deletions(-)
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--- a/drivers/net/wireless/ti/wlcore/main.c
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+++ b/drivers/net/wireless/ti/wlcore/main.c
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@@ -1767,6 +1767,12 @@ static int wl1271_op_suspend(struct ieee
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flush_work(&wl->tx_work);
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flush_delayed_work(&wl->elp_work);
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+ /*
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+ * Cancel the watchdog even if above tx_flush failed. We will detect
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+ * it on resume anyway.
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+ */
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+ cancel_delayed_work(&wl->tx_watchdog_work);
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+
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return 0;
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}
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@@ -1824,6 +1830,13 @@ static int wl1271_op_resume(struct ieee8
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out:
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wl->wow_enabled = false;
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+
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+ /*
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+ * Set a flag to re-init the watchdog on the first Tx after resume.
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+ * That way we avoid possible conditions where Tx-complete interrupts
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+ * fail to arrive and we perform a spurious recovery.
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+ */
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+ set_bit(WL1271_FLAG_REINIT_TX_WDOG, &wl->flags);
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mutex_unlock(&wl->mutex);
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return 0;
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--- a/drivers/net/wireless/ti/wlcore/tx.c
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+++ b/drivers/net/wireless/ti/wlcore/tx.c
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@@ -234,8 +234,13 @@ static int wl1271_tx_allocate(struct wl1
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wl->tx_blocks_available -= total_blocks;
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wl->tx_allocated_blocks += total_blocks;
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- /* If the FW was empty before, arm the Tx watchdog */
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- if (wl->tx_allocated_blocks == total_blocks)
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+ /*
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+ * If the FW was empty before, arm the Tx watchdog. Also do
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+ * this on the first Tx after resume, as we always cancel the
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+ * watchdog on suspend.
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+ */
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+ if (wl->tx_allocated_blocks == total_blocks ||
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+ test_and_clear_bit(WL1271_FLAG_REINIT_TX_WDOG, &wl->flags))
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wl12xx_rearm_tx_watchdog_locked(wl);
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ac = wl1271_tx_get_queue(skb_get_queue_mapping(skb));
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--- a/drivers/net/wireless/ti/wlcore/wlcore_i.h
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+++ b/drivers/net/wireless/ti/wlcore/wlcore_i.h
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@@ -240,6 +240,7 @@ enum wl12xx_flags {
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WL1271_FLAG_VIF_CHANGE_IN_PROGRESS,
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WL1271_FLAG_INTENDED_FW_RECOVERY,
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WL1271_FLAG_IO_FAILED,
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+ WL1271_FLAG_REINIT_TX_WDOG,
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};
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enum wl12xx_vif_flags {
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