From: Wright Feng <wright.feng@xxxxxxxxxxx> [ Upstream commit eccbf46b15bb3e35d004148f7c3a8fa8e9b26c1e ] 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@xxxxxxxxxxx> Signed-off-by: Chi-hsien Lin <chi-hsien.lin@xxxxxxxxxxx> Signed-off-by: Kalle Valo <kvalo@xxxxxxxxxxxxxx> Link: https://lore.kernel.org/r/20200604071835.3842-4-wright.feng@xxxxxxxxxxx Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> --- 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 96870d1b3b73b..a5195bdb4d9bd 100644 --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c @@ -3633,7 +3633,11 @@ 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); -- 2.25.1
