brcmfmac: keep SDIO watchdog running when console_interval is non-zero

[ Upstream commit eccbf46b ]

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.comSigned-off-by: Sasha Levin <sashal@kernel.org>

drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c

@@ -3633,6 +3633,10 @@ 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);
+#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);