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6e80785267
request_mem_region() returns a pointer and not an integer with an error value. A check for "< 0" on a pointer will cause problems, replace it with not null checks instead. This was found with sparse. Signed-off-by: Hauke Mehrtens <hauke.mehrtens@lantiq.com> Acked-by: John Crispin <blogic@openwrt.org> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/11395/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>