habanalabs: add warning print upon a PCI error

In order to know if driver catches PCI errors correctly, we need to
print a warning per each error.

Signed-off-by: Ofir Bitton <obitton@habana.ai>
Reviewed-by: Oded Gabbay <ogabbay@kernel.org>
Signed-off-by: Oded Gabbay <ogabbay@kernel.org>

diff --git a/drivers/misc/habanalabs/common/habanalabs_drv.c b/drivers/misc/habanalabs/common/habanalabs_drv.c
index 714994725224f7828bb03394ed14476e14288be9..e82af89897009054888f69e554aec5a5ece0066a 100644 (file)
--- a/drivers/misc/habanalabs/common/habanalabs_drv.c
+++ b/drivers/misc/habanalabs/common/habanalabs_drv.c
@@ -595,15 +595,16 @@ hl_pci_err_detected(struct pci_dev *pdev, pci_channel_state_t state)
 
        switch (state) {
        case pci_channel_io_normal:
+               dev_warn(hdev->dev, "PCI normal state error detected\n");
                return PCI_ERS_RESULT_CAN_RECOVER;
 
        case pci_channel_io_frozen:
-               dev_warn(hdev->dev, "frozen state error detected\n");
+               dev_warn(hdev->dev, "PCI frozen state error detected\n");
                result = PCI_ERS_RESULT_NEED_RESET;
                break;
 
        case pci_channel_io_perm_failure:
-               dev_warn(hdev->dev, "failure state error detected\n");
+               dev_warn(hdev->dev, "PCI failure state error detected\n");
                result = PCI_ERS_RESULT_DISCONNECT;
                break;
 
@@ -639,6 +640,10 @@ static void hl_pci_err_resume(struct pci_dev *pdev)
  */
 static pci_ers_result_t hl_pci_err_slot_reset(struct pci_dev *pdev)
 {
+       struct hl_device *hdev = pci_get_drvdata(pdev);
+
+       dev_warn(hdev->dev, "PCI slot reset detected\n");
+
        return PCI_ERS_RESULT_RECOVERED;
 }