[net,5/5] bnxt_en: Reset rings if ring reservation fails during open()

Message ID 1584909605-19161-6-git-send-email-michael.chan@broadcom.com
State New
Headers show
Series
  • [net,1/5] bnxt_en: Fix Priority Bytes and Packets counters in ethtool -S.
Related show

Commit Message

Michael Chan March 22, 2020, 8:40 p.m.
From: Vasundhara Volam <vasundhara-v.volam@broadcom.com>

If ring counts are not reset when ring reservation fails,
bnxt_init_dflt_ring_mode() will not be called again to reinitialise
IRQs when open() is called and results in system crash as napi will
also be not initialised. This patch fixes it by resetting the ring
counts.

Fixes: 47558acd56a7 ("bnxt_en: Reserve rings at driver open if none was reserved at probe time.")
Signed-off-by: Vasundhara Volam <vasundhara-v.volam@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
---
 drivers/net/ethernet/broadcom/bnxt/bnxt.c | 4 ++++
 1 file changed, 4 insertions(+)

Patch

diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
index 95f4c02..d28b406 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
@@ -11677,6 +11677,10 @@  static int bnxt_set_dflt_rings(struct bnxt *bp, bool sh)
 		bp->rx_nr_rings++;
 		bp->cp_nr_rings++;
 	}
+	if (rc) {
+		bp->tx_nr_rings = 0;
+		bp->rx_nr_rings = 0;
+	}
 	return rc;
 }