From:   Alex Elder <elder@linaro.org>
To:     davem@davemloft.net, kuba@kernel.org
Cc:     pkurapat@codeaurora.org, avuyyuru@codeaurora.org,
        bjorn.andersson@linaro.org, cpratapa@codeaurora.org,
        subashab@codeaurora.org, evgreen@chromium.org, elder@kernel.org,
        netdev@vger.kernel.org, linux-arm-msm@vger.kernel.org,
        linux-kernel@vger.kernel.org
Subject: [PATCH net-next 4/7] net: ipa: explicitly disable HOLB drop during setup
Date:   Wed, 24 Nov 2021 14:25:08 -0600
Message-Id: <20211124202511.862588-5-elder@linaro.org>
In-Reply-To: <20211124202511.862588-1-elder@linaro.org>
References: <20211124202511.862588-1-elder@linaro.org>
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Precedence: bulk

During setup, ipa_endpoint_program() programs each endpoint with
various configuration parameters.  One of those registers defines
whether to drop packets when a head-of-line blocking condition is
detected on an RX endpoint.  We currently assume this is disabled;
instead, explicitly set it to be disabled.

Signed-off-by: Alex Elder <elder@linaro.org>
---
 drivers/net/ipa/ipa_endpoint.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/net/ipa/ipa_endpoint.c b/drivers/net/ipa/ipa_endpoint.c
index 405410a6222ce..eeb9f082a0e4c 100644
--- a/drivers/net/ipa/ipa_endpoint.c
+++ b/drivers/net/ipa/ipa_endpoint.c
@@ -1542,6 +1542,8 @@ static void ipa_endpoint_program(struct ipa_endpoint *endpoint)
 	ipa_endpoint_init_hdr_metadata_mask(endpoint);
 	ipa_endpoint_init_mode(endpoint);
 	ipa_endpoint_init_aggr(endpoint);
+	if (!endpoint->toward_ipa)
+		ipa_endpoint_init_hol_block_disable(endpoint);
 	ipa_endpoint_init_deaggr(endpoint);
 	ipa_endpoint_init_rsrc_grp(endpoint);
 	ipa_endpoint_init_seq(endpoint);
-- 
2.32.0