| Message ID | 20231130105459.3208986-5-lee@kernel.org (mailing list archive) |
|---|---|
| State | Superseded |
| Commit | 38168e2de320b9c12132eb72cf1f1d3d411fe38c |
| Headers | show |
| Series | usb: Replace {v}snprintf() variants with safer alternatives | expand |
diff --git a/drivers/usb/gadget/configfs.c b/drivers/usb/gadget/configfs.c index 4c639e9ddedc0..b7d2a1313a684 100644 --- a/drivers/usb/gadget/configfs.c +++ b/drivers/usb/gadget/configfs.c @@ -812,7 +812,7 @@ static ssize_t gadget_string_s_show(struct config_item *item, char *page) struct gadget_string *string = to_gadget_string(item); int ret; - ret = snprintf(page, sizeof(string->string), "%s\n", string->string); + ret = sysfs_emit(page, "%s\n", string->string); return ret; }
Since snprintf() has the documented, but still rather strange trait of returning the length of the data that *would have been* written to the array if space were available, rather than the arguably more useful length of data *actually* written, it is usually considered wise to use something else instead in order to avoid confusion. In the case of sysfs call-backs, new wrappers exist that do just that. This patch replaces just one use of snprintf() found in the sysfs .show() call-back with the new sysfs_emit() helper. Link: https://lwn.net/Articles/69419/ Link: https://github.com/KSPP/linux/issues/105 Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: linux-usb@vger.kernel.org Signed-off-by: Lee Jones <lee@kernel.org> --- drivers/usb/gadget/configfs.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)