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[85.230.184.20]) by smtp.gmail.com with ESMTPSA id u7sm1860356lfn.31.2019.11.28.09.24.41 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 28 Nov 2019 09:24:43 -0800 (PST) Received: from johan by xi.terra with local (Exim 4.92.3) (envelope-from ) id 1iaNWz-0006wk-SD; Thu, 28 Nov 2019 18:24:41 +0100 From: Johan Hovold To: Amitkumar Karwar , Siva Rebbagondla , Kalle Valo Cc: linux-wireless@vger.kernel.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org, Johan Hovold Subject: [PATCH 5/5] rsi: add missing endpoint sanity checks Date: Thu, 28 Nov 2019 18:22:04 +0100 Message-Id: <20191128172204.26600-6-johan@kernel.org> X-Mailer: git-send-email 2.24.0 In-Reply-To: <20191128172204.26600-1-johan@kernel.org> References: <20191128172204.26600-1-johan@kernel.org> MIME-Version: 1.0 Sender: linux-usb-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org The driver expects at least one bulk-in endpoint when in "wifi-alone" operating mode and two bulk-in endpoints otherwise, and would otherwise fail to to submit the corresponding bulk URB to the default pipe during probe with a somewhat cryptic message: rsi_91x: rsi_rx_urb_submit: Failed in urb submission rsi_91x: rsi_probe: Failed in probe...Exiting RSI-USB WLAN: probe of 2-2.4:1.0 failed with error -8 The current endpoint sanity check looks broken and would only bail out early if there was no bulk-in endpoint but at least one bulk-out endpoint. Tighten this check to always require at least one bulk-in and one bulk-out endpoint, and add the missing sanity check for a Bluetooth bulk-in endpoint when in a BT operating mode. Also make sure to log an informative error message when the expected endpoints are missing. Signed-off-by: Johan Hovold --- drivers/net/wireless/rsi/rsi_91x_usb.c | 12 ++++++++++-- 1 file changed, 10 insertions(+), 2 deletions(-) diff --git a/drivers/net/wireless/rsi/rsi_91x_usb.c b/drivers/net/wireless/rsi/rsi_91x_usb.c index ead75574e10a..396b9b81c1cd 100644 --- a/drivers/net/wireless/rsi/rsi_91x_usb.c +++ b/drivers/net/wireless/rsi/rsi_91x_usb.c @@ -149,9 +149,17 @@ static int rsi_find_bulk_in_and_out_endpoints(struct usb_interface *interface, break; } - if (!(dev->bulkin_endpoint_addr[0]) && - dev->bulkout_endpoint_addr[0]) + if (!(dev->bulkin_endpoint_addr[0] && dev->bulkout_endpoint_addr[0])) { + dev_err(&interface->dev, "missing wlan bulk endpoints\n"); return -EINVAL; + } + + if (adapter->priv->coex_mode > 1) { + if (!dev->bulkin_endpoint_addr[1]) { + dev_err(&interface->dev, "missing bt bulk-in endpoint\n"); + return -EINVAL; + } + } return 0; }