Thread (13 messages) 13 messages, 1 author, 2017-01-11
STALE3442d

[PATCH 07/12] wil6210: protect against false interrupt during reset sequence

From: Maya Erez <hidden>
Date: 2017-01-11 16:13:58
Subsystem: atheros ath generic utilities, the rest, wilocity wil6210 wireless driver · Maintainers: Jeff Johnson, Linus Torvalds

From: Hamad Kadmany <redacted>

During reset sequence it is seen that device is generating an
interrupt eventhough interrupts are masked at device level.

Add workaround to disable the interrupts from host side during
reset and clear any pending interrupts before re-enabling
the interrupt.

Signed-off-by: Hamad Kadmany <redacted>
Signed-off-by: Maya Erez <redacted>
---
 drivers/net/wireless/ath/wil6210/main.c | 3 +++
 1 file changed, 3 insertions(+)
diff --git a/drivers/net/wireless/ath/wil6210/main.c b/drivers/net/wireless/ath/wil6210/main.c
index 6584960..8135283 100644
--- a/drivers/net/wireless/ath/wil6210/main.c
+++ b/drivers/net/wireless/ath/wil6210/main.c
@@ -918,7 +918,10 @@ int wil_reset(struct wil6210_priv *wil, bool load_fw)
 	flush_workqueue(wil->wmi_wq);
 
 	wil_bl_crash_info(wil, false);
+	wil_disable_irq(wil);
 	rc = wil_target_reset(wil);
+	wil6210_clear_irq(wil);
+	wil_enable_irq(wil);
 	wil_rx_fini(wil);
 	if (rc) {
 		wil_bl_crash_info(wil, true);
-- 
1.9.1
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