Re: [PATCH] IB/hfi1: Fix logical condition in msix_request_irq

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On 1/16/2020 5:26 PM, Nathan Chancellor wrote:
Clang warns:

drivers/infiniband/hw/hfi1/msix.c:136:22: warning: overlapping
comparisons always evaluate to false [-Wtautological-overlap-compare]
         if (type < IRQ_SDMA && type >= IRQ_OTHER)
             ~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~
1 warning generated.

It is impossible for something to be less than 0 (IRQ_SDMA) and greater
than or equal to 3 (IRQ_OTHER) at the same time. A logical OR should
have been used to keep the same logic as before.

Link: https://github.com/ClangBuiltLinux/linux/issues/841
Fixes: 13d2a8384bd9 ("IB/hfi1: Decouple IRQ name from type")
Signed-off-by: Nathan Chancellor <natechancellor@xxxxxxxxx>

Acked-by: Dennis Dalessandro <dennis.dalessandro@xxxxxxxxx>



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