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Jeremy Kerr authored
Although irqreturn_t is an enum, we treat it (and its enumeration constants) as a bitmask. However, bad_action_ret() uses a less-than operator to determine whether an irqreturn_t falls within allowable bit values, which means we need to know the signededness of an enum type to read the logic, which is implementation-dependent. This change explicitly uses an unsigned type for the comparison. We do this instead of changing to a bitwise test, as the latter compiles to increased instructions in this hot path. It looks like we get the correct behaviour currently (bad_action_ret(-1) returns 1), so this is purely a readability fix. Signed-off-by:
Jeremy Kerr <jk@ozlabs.org> Link: http://lkml.kernel.org/r/1487219049-4061-1-git-send-email-jk@ozlabs.orgSigned-off-by:
Thomas Gleixner <tglx@linutronix.de>
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