From: Baochen Qiang Date: Wed, 28 Sep 2022 01:51:40 +0000 (+0800) Subject: wifi: ath11k: Don't exit on wakeup failure X-Git-Tag: v6.6.7~3913^2~181^2~54^2~18 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=45d2e268369b0c768d5a644f319758bcfd370521;p=platform%2Fkernel%2Flinux-starfive.git wifi: ath11k: Don't exit on wakeup failure Currently, ath11k_pcic_read() returns an error if wakeup() fails, this makes firmware crash debug quite hard because we can get nothing. Change to go ahead on wakeup failure, in that case we still may get something valid to check. There should be no mislead due to incorrect content because we are aware of the failure with the log printed. Tested-on: WCN6855 hw2.0 PCI WLAN.HSP.1.1-01720.1-QCAHSPSWPL_V1_V2_SILICONZ_LITE-1 Signed-off-by: Baochen Qiang Signed-off-by: Kalle Valo Link: https://lore.kernel.org/r/20220928015140.5431-1-quic_bqiang@quicinc.com --- diff --git a/drivers/net/wireless/ath/ath11k/pcic.c b/drivers/net/wireless/ath/ath11k/pcic.c index 3fa1958..d2f0112 100644 --- a/drivers/net/wireless/ath/ath11k/pcic.c +++ b/drivers/net/wireless/ath/ath11k/pcic.c @@ -218,9 +218,16 @@ int ath11k_pcic_read(struct ath11k_base *ab, void *buf, u32 start, u32 end) if (wakeup_required && ab->pci.ops->wakeup) { ret = ab->pci.ops->wakeup(ab); if (ret) { - ath11k_warn(ab, "failed to wakeup for read from 0x%x: %d\n", - start, ret); - return ret; + ath11k_warn(ab, + "wakeup failed, data may be invalid: %d", + ret); + /* Even though wakeup() failed, continue processing rather + * than returning because some parts of the data may still + * be valid and useful in some cases, e.g. could give us + * some clues on firmware crash. + * Mislead due to invalid data could be avoided because we + * are aware of the wakeup failure. + */ } }