net/qede/base: fix VF init after malicious VF FLR

Fix VF init after malicious VF FLR.

Fixes: 40c926ba2626 ("net/qede/base: support to initiate PF FLR")
Fixes: 86a2265e59d7 ("qede: add SRIOV support")

Signed-off-by: Rasesh Mody <rasesh.mody@cavium.com>

diff --git a/drivers/net/qede/base/ecore_sriov.c b/drivers/net/qede/base/ecore_sriov.c
index d28946e..40671dd 100644 (file)
--- a/drivers/net/qede/base/ecore_sriov.c
+++ b/drivers/net/qede/base/ecore_sriov.c
@@ -3073,6 +3073,13 @@ ecore_iov_execute_vf_flr_cleanup(struct ecore_hwfn *p_hwfn,
                        return rc;
                }
 
+               /* Workaround to make VF-PF channel ready, as FW
+                * doesn't do that as a part of FLR.
+                */
+               REG_WR(p_hwfn,
+                      GTT_BAR0_MAP_REG_USDM_RAM +
+                      USTORM_VF_PF_CHANNEL_READY_OFFSET(vfid), 1);
+
                /* VF_STOPPED has to be set only after final cleanup
                 * but prior to re-enabling the VF.
                 */