stmmac_is_jumbo_frm() takes skb->len, which is unsigned int, but the parameter is passed as an "int" and then tested using signed comparisons. This can cause bugs. Change the parameter to be unsigned.
Also arrange for it to return a bool. ====================
Link: https://patch.msgid.link/aRxDqJSWxOdOaRt4@shell.armlinux.org.uk Signed-off-by: Jakub Kicinski <kuba@kernel.org>