Re: [PATCH 1/1] usb: avoid -Werror=address-of-packed-member

On 12/17/19 10:27 AM, Heinrich Schuchardt wrote:

With GCC 9.2.1 errors of type -Werror=address-of-packed-member occur when passing a member of a packed structure to le16_to_cpus() on a big endian system (e.g. P2041RDB_defconfig).

Replace le16_to_cpus() by get_unaligned_le16(). Check defined(__BIG_ENDIAN) to avoid the introduction of unnecessary instructions on little endian systems as seen on aarch64.

I would expect the compiler would optimize such stuff out ? Can we do without the ifdef ?

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