[PATCH 1/6] ath11k: mhi: print a warning if firmware crashed

[Kalle Valo]

There was no way to detect if the firmware crashed so add a warning. At the
moment the firmware is not restarted or anything like that, so when this
happens ath11k modules need to be reloaded.

Tested-on: QCA6390 hw2.0 PCI WLAN.HST.1.0.1-01740-QCAHSTSWPLZ_V2_TO_X86-1

Signed-off-by: Kalle Valo <kvalo at codeaurora.org>
---
 drivers/net/wireless/ath/ath11k/mhi.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/drivers/net/wireless/ath/ath11k/mhi.c b/drivers/net/wireless/ath/ath11k/mhi.c
index 47a1ce1bee4f..4cf093718888 100644
--- a/drivers/net/wireless/ath/ath11k/mhi.c
+++ b/drivers/net/wireless/ath/ath11k/mhi.c
@@ -190,6 +190,15 @@ static void ath11k_mhi_op_runtime_put(struct mhi_controller *mhi_cntrl)
 static void ath11k_mhi_op_status_cb(struct mhi_controller *mhi_cntrl,
 				    enum mhi_callback cb)
 {
+	struct ath11k_base *ab = dev_get_drvdata(mhi_cntrl->cntrl_dev);
+
+	switch (cb) {
+	case MHI_CB_SYS_ERROR:
+		ath11k_warn(ab, "firmware crashed: MHI_CB_SYS_ERROR\n");
+		break;
+	default:
+		break;
+	}
 }
 
 static int ath11k_mhi_op_read_reg(struct mhi_controller *mhi_cntrl,
-- 
2.7.4