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bnxt_en: Fix allocation of zero statistics block size regression. 

Recent commit added logic to determine the appropriate statistics block
size to allocate and the size is stored in bp->hw_ring_stats_size.  But
if the firmware spec is older than 1.6.0, it is 0 and not initialized.
This causes the allocation to fail with size 0 and bnxt_open() to
abort.  Fix it by always initializing bp->hw_ring_stats_size to the
legacy default size value.

Fixes: 4e74850663 ("bnxt_en: Allocate the larger per-ring statistics block for 57500 chips.")
Reported-by: Jonathan Lemon <jonathan.lemon@gmail.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Tested-by: Jonathan Lemon <jonathan.lemon@gmail.com>
Acked-by: Jonathan Lemon <jonathan.lemon@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Michael Chan 2019-08-23 01:51:41 -04:00 committed by David S. Miller
parent dd016aca28
commit fbbdbc6473
1 changed files with 1 additions and 2 deletions
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3
drivers/net/ethernet/broadcom/bnxt/bnxt.c
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@ -4985,6 +4985,7 @@ static int bnxt_hwrm_vnic_qcaps(struct bnxt *bp)
struct hwrm_vnic_qcaps_input req = {0};
int rc;
bp->hw_ring_stats_size = sizeof(struct ctx_hw_stats);
if (bp->hwrm_spec_code < 0x10600)
return 0;
@ -5004,8 +5005,6 @@ static int bnxt_hwrm_vnic_qcaps(struct bnxt *bp)
if (bp->max_tpa_v2)
bp->hw_ring_stats_size =
sizeof(struct ctx_hw_stats_ext);
else
bp->hw_ring_stats_size = sizeof(struct ctx_hw_stats);
}
mutex_unlock(&bp->hwrm_cmd_lock);
return rc;