On Tue, Oct 12, 2021 at 08:27:47PM -0700, Qing Wang wrote:
> coccicheck complains about the use of snprintf() in sysfs show functions.
>
> Fix the following coccicheck warning:
> drivers/usb/core/sysfs.c:730:8-16: WARNING: use scnprintf or sprintf.
> drivers/usb/core/sysfs.c:921:8-16: WARNING: use scnprintf or sprintf.
>
> Use sysfs_emit instead of scnprintf or sprintf makes more sense.
>
> Signed-off-by: Qing Wang <wangqing@xxxxxxxx>
> ---
> drivers/usb/core/sysfs.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/usb/core/sysfs.c b/drivers/usb/core/sysfs.c
> index fa2e49d..6387c0d 100644
> --- a/drivers/usb/core/sysfs.c
> +++ b/drivers/usb/core/sysfs.c
> @@ -727,7 +727,7 @@ static ssize_t authorized_show(struct device *dev,
> struct device_attribute *attr, char *buf)
> {
> struct usb_device *usb_dev = to_usb_device(dev);
> - return snprintf(buf, PAGE_SIZE, "%u\n", usb_dev->authorized);
> + return sysfs_emit(buf, "%u\n", usb_dev->authorized);
> }
>
> /*
> @@ -918,7 +918,7 @@ static ssize_t authorized_default_show(struct device *dev,
> struct usb_hcd *hcd;
>
> hcd = bus_to_hcd(usb_bus);
> - return snprintf(buf, PAGE_SIZE, "%u\n", hcd->dev_policy);
> + return sysfs_emit(buf, "%u\n", hcd->dev_policy);
> }
>
> static ssize_t authorized_default_store(struct device *dev,
> --
> 2.7.4
>
If you are going to change this file, you should do this for all of the
sysfs show functions in this file, not just 2 of them, right? Please
change this patch to do that.
thanks,
greg k-h
