Message ID | 20211018231722.873525-6-bryan.odonoghue@linaro.org |
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State | New |
Headers | show
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[188.141.3.169]) by smtp.gmail.com with ESMTPSA id s8sm3685379wrr.15.2021.10.18.16.15.28 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 18 Oct 2021 16:15:28 -0700 (PDT) From: Bryan O'Donoghue <bryan.odonoghue@linaro.org> To: kvalo@codeaurora.org, linux-wireless@vger.kernel.org, wcn36xx@lists.infradead.org Cc: loic.poulain@linaro.org, benl@squareup.com, daniel.thompson@linaro.org, johannes@sipsolutions.net, bryan.odonoghue@linaro.org Subject: [PATCH v2 5/5] wcn36xx: Put DXE block into reset before freeing memory Date: Tue, 19 Oct 2021 00:17:22 +0100 Message-Id: <20211018231722.873525-6-bryan.odonoghue@linaro.org> X-Mailer: git-send-email 2.33.0 In-Reply-To: <20211018231722.873525-1-bryan.odonoghue@linaro.org> References: <20211018231722.873525-1-bryan.odonoghue@linaro.org> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20211018_161530_607162_5A9A0B97 X-CRM114-Status: UNSURE ( 9.63 ) X-CRM114-Notice: Please train this message. X-Spam-Score: -0.2 (/) X-Spam-Report: Spam detection software, running on the system "bombadil.infradead.org", has NOT identified this incoming email as spam. The original message has been attached to this so you can view it or label similar future email. If you have any questions, see the administrator of that system for details. Content preview: When deiniting the DXE hardware we should reset the block to ensure there is no spurious DMA write transaction from the downstream WCNSS to upstream MSM at a skbuff address we will have released. Fixes: 8e84c2582169 ("wcn36xx: mac80211 driver for Qualcomm WCN3660/WCN3680 hardware") Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org> --- drivers/net/wireless/ath/wcn36xx/dxe.c | 3 +++ 1 [...] Content analysis details: (-0.2 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at https://www.dnswl.org/, no trust [2a00:1450:4864:20:0:0:0:42f listed in] [list.dnswl.org] -0.0 SPF_PASS SPF: sender matches SPF record 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid -0.1 DKIM_VALID_EF Message has a valid DKIM or DK signature from envelope-from domain X-BeenThere: wcn36xx@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: <wcn36xx.lists.infradead.org> List-Unsubscribe: <http://lists.infradead.org/mailman/options/wcn36xx>, <mailto:wcn36xx-request@lists.infradead.org?subject=unsubscribe> List-Archive: <http://lists.infradead.org/pipermail/wcn36xx/> List-Post: <mailto:wcn36xx@lists.infradead.org> List-Help: <mailto:wcn36xx-request@lists.infradead.org?subject=help> List-Subscribe: <http://lists.infradead.org/mailman/listinfo/wcn36xx>, <mailto:wcn36xx-request@lists.infradead.org?subject=subscribe> Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "wcn36xx" <wcn36xx-bounces@lists.infradead.org> Errors-To: wcn36xx-bounces+patch=linaro.org@lists.infradead.org |
Series |
wcn36xx: Fix DMA buffer allocation and free logic
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expand
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diff --git a/drivers/net/wireless/ath/wcn36xx/dxe.c b/drivers/net/wireless/ath/wcn36xx/dxe.c index d4f5746d9b10a..cf85b0cd11be4 100644 --- a/drivers/net/wireless/ath/wcn36xx/dxe.c +++ b/drivers/net/wireless/ath/wcn36xx/dxe.c @@ -1089,6 +1089,9 @@ void wcn36xx_dxe_deinit(struct wcn36xx *wcn) wcn->tx_ack_skb = NULL; } + /* Put the DXE block into reset before freeing memory */ + wcn36xx_dxe_reset(wcn); + wcn36xx_dxe_ch_free_skbs(wcn, &wcn->dxe_rx_l_ch); wcn36xx_dxe_ch_free_skbs(wcn, &wcn->dxe_rx_h_ch);
When deiniting the DXE hardware we should reset the block to ensure there is no spurious DMA write transaction from the downstream WCNSS to upstream MSM at a skbuff address we will have released. Fixes: 8e84c2582169 ("wcn36xx: mac80211 driver for Qualcomm WCN3660/WCN3680 hardware") Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org> --- drivers/net/wireless/ath/wcn36xx/dxe.c | 3 +++ 1 file changed, 3 insertions(+) -- 2.33.0 _______________________________________________ wcn36xx mailing list wcn36xx@lists.infradead.org http://lists.infradead.org/mailman/listinfo/wcn36xx