From: Vasundhara Volam vasundhara-v.volam@broadcom.com
[ Upstream commit 5d765a5e4bd7c368e564e11402bba74cf7f03ac1 ]
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 Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/net/ethernet/broadcom/bnxt/bnxt.c | 4 ++++ 1 file changed, 4 insertions(+)
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c @@ -11603,6 +11603,10 @@ static int bnxt_set_dflt_rings(struct bn bp->rx_nr_rings++; bp->cp_nr_rings++; } + if (rc) { + bp->tx_nr_rings = 0; + bp->rx_nr_rings = 0; + } return rc; }