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[2a00:1028:c000:ddf:8c68:4a09:6ad6:6324]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-49fde180a39sm34612165e9.1.2026.09.22.17.14.32 (version=TLS1_3 cipher=TLS_CHACHA20_POLY1305_SHA256 bits=256/256); Tue, 22 Sep 2026 17:14:34 -0700 (PDT) From: Josef Schlehofer To: Mauro Carvalho Chehab Cc: linux-media@vger.kernel.org, linux-kernel@vger.kernel.org, Hyunwoo Kim , Josef Schlehofer Subject: [PATCH 2/6] media: az6007: propagate USB errors from I2C transfers Date: Wed, 23 Sep 2026 02:14:06 +0200 Message-ID: <20260923001410.30297-3-pepe.schlehofer@gmail.com> X-Mailer: git-send-email 2.54.0 In-Reply-To: <20260923001410.30297-1-pepe.schlehofer@gmail.com> References: <20260923001410.30297-1-pepe.schlehofer@gmail.com> Precedence: bulk X-Mailing-List: linux-media@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit __az6007_read(), __az6007_write() and az6007_i2c_xfer() currently map usb_control_msg() failures to -EIO. After disconnect, USB reports -ENODEV, but drxk cannot distinguish a gone device from a transfer error. Propagate the error reported by usb_control_msg() instead. Keep short transfers mapped to -EIO as before. This lets drxk stop retrying and accessing the device after disconnect. Signed-off-by: Josef Schlehofer --- drivers/media/usb/dvb-usb-v2/az6007.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/drivers/media/usb/dvb-usb-v2/az6007.c b/drivers/media/usb/dvb-usb-v2/az6007.c index 4ce1afe01c3b..5449ceda87e8 100644 --- a/drivers/media/usb/dvb-usb-v2/az6007.c +++ b/drivers/media/usb/dvb-usb-v2/az6007.c @@ -109,7 +109,7 @@ static int __az6007_read(struct usb_device *udev, u8 req, u16 value, value, index, b, blen, 5000); if (ret < 0) { pr_warn("usb read operation failed. (%d)\n", ret); - return -EIO; + return ret; } if (az6007_xfer_debug) { @@ -163,7 +163,7 @@ static int __az6007_write(struct usb_device *udev, u8 req, u16 value, value, index, b, blen, 5000); if (ret != blen) { pr_err("usb write operation failed. (%d)\n", ret); - return -EIO; + return ret < 0 ? ret : -EIO; } return 0; @@ -782,8 +782,9 @@ static int az6007_i2c_xfer(struct i2c_adapter *adap, struct i2c_msg msgs[], if (ret >= len) { for (j = 0; j < len; j++) msgs[i + 1].buf[j] = st->data[j + 5]; - } else + } else if (ret >= 0) { ret = -EIO; + } i++; } else if (!(msgs[i].flags & I2C_M_RD)) { /* write bytes */ -- 2.54.0 (Apple Git-157)