| Message ID | 20201209092917.20681-1-zhengyongjun3@huawei.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | [-next] usb: serial: simplify the ark3116_write_reg() | expand |
On Wed, Dec 09, 2020 at 05:29:17PM +0800, Zheng Yongjun wrote: > Simplify the return expression. > > Signed-off-by: Zheng Yongjun <zhengyongjun3@huawei.com> > --- > drivers/usb/serial/ark3116.c | 13 ++++--------- > 1 file changed, 4 insertions(+), 9 deletions(-) > > diff --git a/drivers/usb/serial/ark3116.c b/drivers/usb/serial/ark3116.c > index 71a9206ea1e2..0f9fa0e7c50e 100644 > --- a/drivers/usb/serial/ark3116.c > +++ b/drivers/usb/serial/ark3116.c > @@ -77,16 +77,11 @@ struct ark3116_private { > static int ark3116_write_reg(struct usb_serial *serial, > unsigned reg, __u8 val) > { > - int result; > /* 0xfe 0x40 are magic values taken from original driver */ > - result = usb_control_msg(serial->dev, > - usb_sndctrlpipe(serial->dev, 0), > - 0xfe, 0x40, val, reg, > - NULL, 0, ARK_TIMEOUT); > - if (result) > - return result; Since none of the callers bother to check for errors, how about you add a dev_err() here similar to the one in ark3116_read_reg() instead? > - > - return 0; Keeping the explicit zero-return on success has the benefit of allowing the casual developer to know what to expect when using this helper without having to read the documentation (or implementation) of usb_control_msg(). > + return usb_control_msg(serial->dev, > + usb_sndctrlpipe(serial->dev, 0), > + 0xfe, 0x40, val, reg, > + NULL, 0, ARK_TIMEOUT); > } > > static int ark3116_read_reg(struct usb_serial *serial, Johan
diff --git a/drivers/usb/serial/ark3116.c b/drivers/usb/serial/ark3116.c index 71a9206ea1e2..0f9fa0e7c50e 100644 --- a/drivers/usb/serial/ark3116.c +++ b/drivers/usb/serial/ark3116.c @@ -77,16 +77,11 @@ struct ark3116_private { static int ark3116_write_reg(struct usb_serial *serial, unsigned reg, __u8 val) { - int result; /* 0xfe 0x40 are magic values taken from original driver */ - result = usb_control_msg(serial->dev, - usb_sndctrlpipe(serial->dev, 0), - 0xfe, 0x40, val, reg, - NULL, 0, ARK_TIMEOUT); - if (result) - return result; - - return 0; + return usb_control_msg(serial->dev, + usb_sndctrlpipe(serial->dev, 0), + 0xfe, 0x40, val, reg, + NULL, 0, ARK_TIMEOUT); } static int ark3116_read_reg(struct usb_serial *serial,
Simplify the return expression. Signed-off-by: Zheng Yongjun <zhengyongjun3@huawei.com> --- drivers/usb/serial/ark3116.c | 13 ++++--------- 1 file changed, 4 insertions(+), 9 deletions(-)