include/drm/i915_drm.h:96: possible bad bitmask ?

David Binderman linuxdev.baldrick at gmail.com
Mon Aug 8 09:31:32 UTC 2016


Hello there,

Recent versions of gcc say this:

include/drm/i915_drm.h:96:34: warning: result of β€˜65535 << 20’
requires 37 bits to represent, but β€˜int’ only has 32 bits
[-Wshift-overflow=]

Source code is

#define   INTEL_BSM_MASK (0xFFFF << 20)

Maybe something like

#define   INTEL_BSM_MASK (0xFFFFUL<< 20)

might be better.


Regards

David Binderman


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