ice: Check for reset in progress during remove

The remove path does not currently check to see if a
reset is in progress before proceeding.  This can cause
a resource collision resulting in various types of errors.

Check for reset in progress and wait for a reasonable
amount of time before allowing the remove to progress.

Signed-off-by: Dave Ertman <david.m.ertman@intel.com>
Signed-off-by: Anirudh Venkataramanan <anirudh.venkataramanan@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

diff --git a/drivers/net/ethernet/intel/ice/ice.h b/drivers/net/ethernet/intel/ice/ice.h
index 4c4b571..e5b37fa 100644 (file)
--- a/drivers/net/ethernet/intel/ice/ice.h
+++ b/drivers/net/ethernet/intel/ice/ice.h
@@ -76,6 +76,8 @@ extern const char ice_drv_ver[];
 #define ICE_MIN_INTR_PER_VF            (ICE_MIN_QS_PER_VF + 1)
 #define ICE_DFLT_INTR_PER_VF           (ICE_DFLT_QS_PER_VF + 1)
 
+#define ICE_MAX_RESET_WAIT             20
+
 #define ICE_VSIQF_HKEY_ARRAY_SIZE      ((VSIQF_HKEY_MAX_INDEX + 1) *   4)
 
 #define ICE_DFLT_NETIF_M (NETIF_MSG_DRV | NETIF_MSG_PROBE | NETIF_MSG_LINK)

diff --git a/drivers/net/ethernet/intel/ice/ice_main.c b/drivers/net/ethernet/intel/ice/ice_main.c
index 6d31ffb..aee22f1 100644 (file)
--- a/drivers/net/ethernet/intel/ice/ice_main.c
+++ b/drivers/net/ethernet/intel/ice/ice_main.c
@@ -2182,6 +2182,12 @@ static void ice_remove(struct pci_dev *pdev)
        if (!pf)
                return;
 
+       for (i = 0; i < ICE_MAX_RESET_WAIT; i++) {
+               if (!ice_is_reset_in_progress(pf->state))
+                       break;
+               msleep(100);
+       }
+
        set_bit(__ICE_DOWN, pf->state);
        ice_service_task_stop(pf);