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From: Wright Feng <wright.feng@cypress.com>
To: linux-wireless@vger.kernel.org
Cc: wright.feng@cypress.com, brcm80211-dev-list@broadcom.com,
	brcm80211-dev-list@cypress.com,
	Arend van Spriel <arend.vanspriel@broadcom.com>,
	Franky Lin <franky.lin@broadcom.com>,
	Hante Meuleman <hante.meuleman@broadcom.com>,
	Kalle Valo <kvalo@codeaurora.org>,
	chi-hsien.lin@cypress.com
Subject: [PATCH v2 3/5] brcmfmac: keep SDIO watchdog running when console_interval is non-zero
Date: Thu,  4 Jun 2020 02:18:33 -0500	[thread overview]
Message-ID: <20200604071835.3842-4-wright.feng@cypress.com> (raw)
In-Reply-To: <20200604071835.3842-1-wright.feng@cypress.com>

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>
---
 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 ce6f15284277..50444989ae09 100644
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c
@@ -3686,7 +3686,11 @@ 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);
-- 
2.25.0


  parent reply	other threads:[~2020-06-04  7:18 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-06-04  7:18 [PATCH v2 0/5] brcmfmac: Stability change series Wright Feng
2020-06-04  7:18 ` [PATCH v2 1/5] brcmfmac: To fix kernel crash on out of boundary access Wright Feng
2020-07-14  9:44   ` Kalle Valo
2020-06-04  7:18 ` [PATCH v2 2/5] brcmfmac: fix invalid permanent MAC address in wiphy Wright Feng
2020-06-04  7:18 ` Wright Feng [this message]
2020-06-04  7:18 ` [PATCH v2 4/5] brcmfmac: reduce maximum station interface from 2 to 1 in RSDB mode Wright Feng
2020-06-04  7:18 ` [PATCH v2 5/5] brcmfmac: To fix Bss Info flag definition Bug Wright Feng

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