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bnxt_en: Fix memory leak in bnxt_hwrm_get_rings()

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bnxt_hwrm_get_rings() can abort and return error when there are not
enough ring resources.  It aborts without releasing the HWRM DMA buffer,
causing a dma_pool_destroy warning when the driver is unloaded:

bnxt_en 0000:99:00.0: dma_pool_destroy bnxt_hwrm, 000000005b089ba8 busy

Fixes: f1e50b276d ("bnxt_en: Fix trimming of P5 RX and TX rings")
Reviewed-by: Somnath Kotur <somnath.kotur@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Link: https://lore.kernel.org/r/20240117234515.226944-3-michael.chan@broadcom.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Michael Chan 2024-01-17 15:45:12 -08:00 committed by Jakub Kicinski
parent 3c1069fa42
commit 2ad8e57338
1 changed files with 3 additions and 2 deletions
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5
drivers/net/ethernet/broadcom/bnxt/bnxt.c
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@ -6926,7 +6926,7 @@ static int bnxt_hwrm_get_rings(struct bnxt *bp)
if (cp < (rx + tx)) {
rc = __bnxt_trim_rings(bp, &rx, &tx, cp, false);
if (rc)
return rc;
goto get_rings_exit;
if (bp->flags & BNXT_FLAG_AGG_RINGS)
rx <<= 1;
hw_resc->resv_rx_rings = rx;
@ -6938,8 +6938,9 @@ static int bnxt_hwrm_get_rings(struct bnxt *bp)
hw_resc->resv_cp_rings = cp;
hw_resc->resv_stat_ctxs = stats;
}
get_rings_exit:
hwrm_req_drop(bp, req);
return 0;
return rc;
}
int __bnxt_hwrm_get_tx_rings(struct bnxt *bp, u16 fid, int *tx_rings)