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Improve the readibility of the code setting ndev->max_mtu. This depends on the hardware specific maximum defined by the MAC core, and also a platform provided maximum. The code was originally checking that the platform specific maximum was between ndev->min_mtu..MAC core maximum before reducing ndev->max_mtu, otherwise if the platform specific maximum was less than ndev->min_mtu, issuing a warning. Re-order the code to handle the case where the platform specific max is below ndev->min_mtu, which then means that the subsequent test is simply reducing ndev->max_mtu. Update the comment, and add a few blank lines to separate the blocks of code. Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk> Link: https://patch.msgid.link/E1vImWA-0000000DrIl-1HZY@rmk-PC.armlinux.org.uk Signed-off-by: Jakub Kicinski <kuba@kernel.org>