ath11k: mhi: print a warning if firmware crashed

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@codeaurora.org>
Link: https://lore.kernel.org/r/1607609124-17250-2-git-send-email-kvalo@codeaurora.org

diff --git a/drivers/net/wireless/ath/ath11k/mhi.c b/drivers/net/wireless/ath/ath11k/mhi.c
index 8a20684..74f9956 100644 (file)
--- 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,