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bnxt_en: Reset rings if ring reservation fails during open() 

[ Upstream commit 5d765a5e4b ]

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: 47558acd56 ("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>
5.4-rM2-2.2.x-imx-squashed
Vasundhara Volam 2020-03-22 16:40:05 -04:00 committed by Greg Kroah-Hartman
parent 0234e8ebb7
commit 62e3ffa4ea
1 changed files with 4 additions and 0 deletions
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4
drivers/net/ethernet/broadcom/bnxt/bnxt.c
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@ -11603,6 +11603,10 @@ 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;
}