From: Johan Hovold <johan@kernel.org>
To: Johan Hovold <johan@kernel.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
linux-usb@vger.kernel.org
Subject: [4/4] USB: serial: kobil_sct: add missing version error handling
Date: Wed, 4 Jul 2018 17:02:19 +0200 [thread overview]
Message-ID: <20180704150219.27389-4-johan@kernel.org> (raw)
Add missing version-request error handling and suppress printing of the
(zeroed) transfer-buffer content in case of errors.
Signed-off-by: Johan Hovold <johan@kernel.org>
---
drivers/usb/serial/kobil_sct.c | 12 ++++++++----
1 file changed, 8 insertions(+), 4 deletions(-)
diff --git a/drivers/usb/serial/kobil_sct.c b/drivers/usb/serial/kobil_sct.c
index a6ebed1e0f20..e9882ba20933 100644
--- a/drivers/usb/serial/kobil_sct.c
+++ b/drivers/usb/serial/kobil_sct.c
@@ -190,8 +190,10 @@ static int kobil_open(struct tty_struct *tty, struct usb_serial_port *port)
KOBIL_TIMEOUT
);
dev_dbg(dev, "%s - Send get_HW_version URB returns: %i\n", __func__, result);
- dev_dbg(dev, "Hardware version: %i.%i.%i\n", transfer_buffer[0],
- transfer_buffer[1], transfer_buffer[2]);
+ if (result >= 3) {
+ dev_dbg(dev, "Hardware version: %i.%i.%i\n", transfer_buffer[0],
+ transfer_buffer[1], transfer_buffer[2]);
+ }
/* get firmware version */
result = usb_control_msg(port->serial->dev,
@@ -205,8 +207,10 @@ static int kobil_open(struct tty_struct *tty, struct usb_serial_port *port)
KOBIL_TIMEOUT
);
dev_dbg(dev, "%s - Send get_FW_version URB returns: %i\n", __func__, result);
- dev_dbg(dev, "Firmware version: %i.%i.%i\n", transfer_buffer[0],
- transfer_buffer[1], transfer_buffer[2]);
+ if (result >= 3) {
+ dev_dbg(dev, "Firmware version: %i.%i.%i\n", transfer_buffer[0],
+ transfer_buffer[1], transfer_buffer[2]);
+ }
if (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID ||
priv->device_type == KOBIL_ADAPTER_K_PRODUCT_ID) {
reply other threads:[~2018-07-04 15:02 UTC|newest]
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