[PATCH 4/9] staging: fsl-dpaa2/eth: Check if notification rearm is successful

[Ioana Radulescu]

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@xxxxxxx>
---
 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