From eccbf46b15bb3e35d004148f7c3a8fa8e9b26c1e Mon Sep 17 00:00:00 2001
From: Wright Feng <wright.feng@cypress.com>
Date: Thu, 4 Jun 2020 02:18:33 -0500
Subject: [PATCH] brcmfmac: keep SDIO watchdog running when console_interval is non-zero
Git-commit: eccbf46b15bb3e35d004148f7c3a8fa8e9b26c1e
Patch-mainline: v5.9-rc1
References: bsc#1111666

brcmfmac host driver makes SDIO bus sleep and stops SDIO watchdog if no
pending event or data. As a result, host driver does not poll firmware
console buffer before buffer overflow, which leads to missing firmware
logs. We should not stop SDIO watchdog if console_interval is non-zero
in debug build.

Signed-off-by: Wright Feng <wright.feng@cypress.com>
Signed-off-by: Chi-hsien Lin <chi-hsien.lin@cypress.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20200604071835.3842-4-wright.feng@cypress.com
Acked-by: Takashi Iwai <tiwai@suse.de>

---
 drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c
index 310d8075f5d7..bc02168ebb53 100644
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c
@@ -3699,7 +3699,11 @@ static void brcmf_sdio_bus_watchdog(struct brcmf_sdio *bus)
 			if (bus->idlecount > bus->idletime) {
 				brcmf_dbg(SDIO, "idle\n");
 				sdio_claim_host(bus->sdiodev->func1);
-				brcmf_sdio_wd_timer(bus, false);
+#ifdef DEBUG
+				if (!BRCMF_FWCON_ON() ||
+				    bus->console_interval == 0)
+#endif
+					brcmf_sdio_wd_timer(bus, false);
 				bus->idlecount = 0;
 				brcmf_sdio_bus_sleep(bus, true, false);
 				sdio_release_host(bus->sdiodev->func1);
-- 
2.16.4