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[73.185.129.58]) by smtp.gmail.com with ESMTPSA id l14sm13060681ilh.58.2021.01.26.10.57.11 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 26 Jan 2021 10:57:12 -0800 (PST) From: Alex Elder To: davem@davemloft.net, kuba@kernel.org Cc: elder@kernel.org, evgreen@chromium.org, bjorn.andersson@linaro.org, cpratapa@codeaurora.org, subashab@codeaurora.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH net-next v2 5/6] net: ipa: don't pass tag value to ipa_cmd_ip_tag_status_add() Date: Tue, 26 Jan 2021 12:57:02 -0600 Message-Id: <20210126185703.29087-6-elder@linaro.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20210126185703.29087-1-elder@linaro.org> References: <20210126185703.29087-1-elder@linaro.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org We only send a tagged packet from the AP->command TX endpoint when we're clearing the hardware pipeline. And when we receive the tagged packet we don't care what the actual tag value is. Stop passing a tag value to ipa_cmd_ip_tag_status_add(), and just encode 0 as the tag sent. Fix the function that encodes the tag so it uses the proper byte ordering. Signed-off-by: Alex Elder --- drivers/net/ipa/ipa_cmd.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/net/ipa/ipa_cmd.c b/drivers/net/ipa/ipa_cmd.c index 7df0072bddcce..eb50e7437359a 100644 --- a/drivers/net/ipa/ipa_cmd.c +++ b/drivers/net/ipa/ipa_cmd.c @@ -529,7 +529,7 @@ void ipa_cmd_dma_shared_mem_add(struct gsi_trans *trans, u32 offset, u16 size, direction, opcode); } -static void ipa_cmd_ip_tag_status_add(struct gsi_trans *trans, u64 tag) +static void ipa_cmd_ip_tag_status_add(struct gsi_trans *trans) { struct ipa *ipa = container_of(trans->gsi, struct ipa, gsi); enum ipa_cmd_opcode opcode = IPA_CMD_IP_PACKET_TAG_STATUS; @@ -543,7 +543,7 @@ static void ipa_cmd_ip_tag_status_add(struct gsi_trans *trans, u64 tag) cmd_payload = ipa_cmd_payload_alloc(ipa, &payload_addr); payload = &cmd_payload->ip_packet_tag_status; - payload->tag = u64_encode_bits(tag, IP_PACKET_TAG_STATUS_TAG_FMASK); + payload->tag = le64_encode_bits(0, IP_PACKET_TAG_STATUS_TAG_FMASK); gsi_trans_cmd_add(trans, payload, sizeof(*payload), payload_addr, direction, opcode); @@ -583,13 +583,13 @@ void ipa_cmd_pipeline_clear_add(struct gsi_trans *trans) * command says to send the next packet directly to the exception * endpoint without any other IPA processing. The tag_status * command requests that status be generated on completion of - * that transfer, and that it will contain the given tag value. + * that transfer, and that it will be tagged with a value. * Finally, the transfer command sends a small packet of data * (instead of a command) using the command endpoint. */ endpoint = ipa->name_map[IPA_ENDPOINT_AP_LAN_RX]; ipa_cmd_ip_packet_init_add(trans, endpoint->endpoint_id); - ipa_cmd_ip_tag_status_add(trans, 0xcba987654321); + ipa_cmd_ip_tag_status_add(trans); ipa_cmd_transfer_add(trans, 4); } -- 2.20.1