IB/hfi1: Fix logical condition in msix_request_irq

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://lore.kernel.org/r/20200116222658.5285-1-natechancellor@gmail.com
Link: https://github.com/ClangBuiltLinux/linux/issues/841
Fixes: 13d2a8384bd9 ("IB/hfi1: Decouple IRQ name from type")
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Acked-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>

diff --git a/drivers/infiniband/hw/hfi1/msix.c b/drivers/infiniband/hw/hfi1/msix.c
index 4a620cf80588979ce5619b55e00f4ae81b3d65d8..db82db497b2cf3564b48a856d26c184bdd174d40 100644 (file)
--- a/drivers/infiniband/hw/hfi1/msix.c
+++ b/drivers/infiniband/hw/hfi1/msix.c
@@ -133,7 +133,7 @@ static int msix_request_irq(struct hfi1_devdata *dd, void *arg,
        if (nr == dd->msix_info.max_requested)
                return -ENOSPC;
 
-       if (type < IRQ_SDMA && type >= IRQ_OTHER)
+       if (type < IRQ_SDMA || type >= IRQ_OTHER)
                return -EINVAL;
 
        irq = pci_irq_vector(dd->pcidev, nr);