Commit cdb78e5a authored by Rakesh Pillai's avatar Rakesh Pillai Committed by Kalle Valo
Browse files

ath10k: fix hw-restart crash inject mode for WCN3990 



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: default avatarRakesh Pillai <pillair@codeaurora.org>
Signed-off-by: default avatarKalle Valo <kvalo@codeaurora.org>
parent 6e8a8991

drivers/net/wireless/ath/ath10k/snoc.c

+10 −1
Original line number Diff line number Diff line
@@ -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);

}