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The maximum number of queues is a compile time constant of only eight. This makes using a 32-bit quantity wastefulf. Instead, use u8 for these and their associated variables. When reading the DT properties, saturdate at U8_MAX. Provided the core provides DMA capabilities to describe the number of queues, this will be capped by stmmac_hw_init() with a warning. Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk> Tested-by: Mohd Ayaan Anwar <mohd.anwar@oss.qualcomm.com> Link: https://patch.msgid.link/E1vzX5K-0000000CVsE-0J0Y@rmk-PC.armlinux.org.uk Signed-off-by: Jakub Kicinski <kuba@kernel.org>