diff options
| author | Chengguang Xu <cgxu519@gmx.com> | 2018-06-25 15:35:18 +0800 |
|---|---|---|
| committer | Johan Hovold <johan@kernel.org> | 2018-06-25 10:34:31 +0200 |
| commit | 3391ca1dcd70a8e958984f7e95f242d36f0b9ab8 (patch) | |
| tree | 46f126bb63af361216187d7b8540a7037adce9ce | |
| parent | 7daf201d7fe8334e2d2364d4e8ed3394ec9af819 (diff) | |
USB: serial: cast sizeof() to int when comparing with error code
Negative error code will be larger than sizeof().
Note that none of these bugs prevent errors from being detected, even if
the ir-usb one would cause a less precise debug message to printed.
Signed-off-by: Chengguang Xu <cgxu519@gmx.com>
[ johan: add comment about implications ]
Signed-off-by: Johan Hovold <johan@kernel.org>
| -rw-r--r-- | drivers/usb/serial/ir-usb.c | 2 | ||||
| -rw-r--r-- | drivers/usb/serial/quatech2.c | 2 | ||||
| -rw-r--r-- | drivers/usb/serial/ssu100.c | 2 |
3 files changed, 3 insertions, 3 deletions
diff --git a/drivers/usb/serial/ir-usb.c b/drivers/usb/serial/ir-usb.c index 24b06c7e5e2d..7643716b5299 100644 --- a/drivers/usb/serial/ir-usb.c +++ b/drivers/usb/serial/ir-usb.c @@ -132,7 +132,7 @@ irda_usb_find_class_desc(struct usb_serial *serial, unsigned int ifnum) 0, ifnum, desc, sizeof(*desc), 1000); dev_dbg(&serial->dev->dev, "%s - ret=%d\n", __func__, ret); - if (ret < sizeof(*desc)) { + if (ret < (int)sizeof(*desc)) { dev_dbg(&serial->dev->dev, "%s - class descriptor read %s (%d)\n", __func__, (ret < 0) ? "failed" : "too short", ret); diff --git a/drivers/usb/serial/quatech2.c b/drivers/usb/serial/quatech2.c index 958e12e1e7c7..ff2322ea5e14 100644 --- a/drivers/usb/serial/quatech2.c +++ b/drivers/usb/serial/quatech2.c @@ -194,7 +194,7 @@ static inline int qt2_getregister(struct usb_device *dev, ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), QT_SET_GET_REGISTER, 0xc0, reg, uart, data, sizeof(*data), QT2_USB_TIMEOUT); - if (ret < sizeof(*data)) { + if (ret < (int)sizeof(*data)) { if (ret >= 0) ret = -EIO; } diff --git a/drivers/usb/serial/ssu100.c b/drivers/usb/serial/ssu100.c index 2083c267787b..0900b47b5f57 100644 --- a/drivers/usb/serial/ssu100.c +++ b/drivers/usb/serial/ssu100.c @@ -104,7 +104,7 @@ static inline int ssu100_getregister(struct usb_device *dev, ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), QT_SET_GET_REGISTER, 0xc0, reg, uart, data, sizeof(*data), 300); - if (ret < sizeof(*data)) { + if (ret < (int)sizeof(*data)) { if (ret >= 0) ret = -EIO; } |