| Message ID | 1548753967-2233-1-git-send-email-pillair@codeaurora.org (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | ath10k: Fix hw-restart crash inject mode for WCN3990 | expand |
Rakesh Pillai <pillair@codeaurora.org> wrote: > The hw-restart crash inject mode is a special mode, where > there is no crash generated in the firmware, but instead > the driver restarts the firmware. In order to restart WCN3990 > firmware, the driver needs to send qmi_wlan_disable message > followed by the qmi_wlan_enable message to the WCN3990 firmware. > > Currently the qmi_wlan_disable message is not sent to > the WCN3990 firmware when hw-restart crash is injected, > which causes the firmware to crash when the driver sends > qmi_wlan_enable message during ath10k_restart. > > Send qmi_wlan_disable to the WCN3990 firmware when the > hw-restart crash is injected via debugfs. > > Tested HW: WCN3990 > Tested FW: WLAN.HL.2.0-01188-QCAHLSWMTPLZ-1 > > Signed-off-by: Rakesh Pillai <pillair@codeaurora.org> > Signed-off-by: Kalle Valo <kvalo@codeaurora.org> Patch applied to ath-next branch of ath.git, thanks. cdb78e5af491 ath10k: fix hw-restart crash inject mode for WCN3990
diff --git a/drivers/net/wireless/ath/ath10k/snoc.c b/drivers/net/wireless/ath/ath10k/snoc.c index 54efe6b..cceb6d4 100644 --- a/drivers/net/wireless/ath/ath10k/snoc.c +++ b/drivers/net/wireless/ath/ath10k/snoc.c @@ -1000,7 +1000,16 @@ static int ath10k_snoc_wlan_enable(struct ath10k *ar) static void ath10k_snoc_wlan_disable(struct ath10k *ar) { - if (!test_bit(ATH10K_FLAG_CRASH_FLUSH, &ar->dev_flags)) + struct ath10k_snoc *ar_snoc = ath10k_snoc_priv(ar); + + /* If both ATH10K_FLAG_CRASH_FLUSH and ATH10K_SNOC_FLAG_RECOVERY + * flags are not set, it means that the driver has restarted + * due to a crash inject via debugfs. In this case, the driver + * needs to restart the firmware and hence send qmi wlan disable, + * during the driver restart sequence. + */ + if (!test_bit(ATH10K_FLAG_CRASH_FLUSH, &ar->dev_flags) || + !test_bit(ATH10K_SNOC_FLAG_RECOVERY, &ar_snoc->flags)) ath10k_qmi_wlan_disable(ar); }
The hw-restart crash inject mode is a special mode, where there is no crash generated in the firmware, but instead the driver restarts the firmware. In order to restart WCN3990 firmware, the driver needs to send qmi_wlan_disable message followed by the qmi_wlan_enable message to the WCN3990 firmware. Currently the qmi_wlan_disable message is not sent to the WCN3990 firmware when hw-restart crash is injected, which causes the firmware to crash when the driver sends qmi_wlan_enable message during ath10k_restart. Send qmi_wlan_disable to the WCN3990 firmware when the hw-restart crash is injected via debugfs. Tested HW: WCN3990 Tested FW: WLAN.HL.2.0-01188-QCAHLSWMTPLZ-1 Signed-off-by: Rakesh Pillai <pillair@codeaurora.org> --- drivers/net/wireless/ath/ath10k/snoc.c | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-)