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USB: chaoskey: Use kasprintf() over strcpy()/strcat()

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Instead of kmalloc() with manually calculated values followed by
multiple strcpy()/strcat() calls, just fold it all into a single
kasprintf() call.

Signed-off-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Keith Packard <keithp@keithp.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Kees Cook 2018-02-16 20:55:30 -08:00 committed by Greg Kroah-Hartman
parent 22072e83eb
commit b382a5c3c5
1 changed files with 2 additions and 6 deletions
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8
drivers/usb/misc/chaoskey.c
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@ -168,14 +168,10 @@ static int chaoskey_probe(struct usb_interface *interface,
*/
if (udev->product && udev->serial) {
dev->name = kmalloc(strlen(udev->product) + 1 +
strlen(udev->serial) + 1, GFP_KERNEL);
dev->name = kasprintf(GFP_KERNEL, "%s-%s", udev->product,
udev->serial);
if (dev->name == NULL)
goto out;
strcpy(dev->name, udev->product);
strcat(dev->name, "-");
strcat(dev->name, udev->serial);
}
dev->interface = interface;