Messages in this thread Patch in this message | | | From | Ioana Radulescu <> | Subject | [PATCH 4/9] staging: fsl-dpaa2/eth: Check if notification rearm is successful | Date | Wed, 11 Oct 2017 08:29:46 -0500 |
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In case dpaa2_io_service_rearm() fails with an error other then EBUSY, it will do so silently; add a check for this and a warning message, as a failure here means we're unable to receive any more traffic on the current cpu.
Signed-off-by: Ioana Radulescu <ruxandra.radulescu@nxp.com> --- drivers/staging/fsl-dpaa2/ethernet/dpaa2-eth.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/drivers/staging/fsl-dpaa2/ethernet/dpaa2-eth.c b/drivers/staging/fsl-dpaa2/ethernet/dpaa2-eth.c index 6f009d1..f390de6 100644 --- a/drivers/staging/fsl-dpaa2/ethernet/dpaa2-eth.c +++ b/drivers/staging/fsl-dpaa2/ethernet/dpaa2-eth.c @@ -955,6 +955,8 @@ static int dpaa2_eth_poll(struct napi_struct *napi, int budget) err = dpaa2_io_service_rearm(NULL, &ch->nctx); cpu_relax(); } while (err == -EBUSY); + WARN_ONCE(err, "CDAN notifications rearm failed on core %d", + ch->nctx.desired_cpu); } ch->stats.frames += cleaned; -- 2.7.4
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