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staging: fsl-dpaa2/eth: Check if notification rearm is successful

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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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Ioana Radulescu 2017-10-11 08:29:46 -05:00 committed by Greg Kroah-Hartman
parent b63baf7137
commit 8658094a22
1 changed files with 2 additions and 0 deletions
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2
drivers/staging/fsl-dpaa2/ethernet/dpaa2-eth.c
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@ -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;