drm/i915: protect macro parameters in SWING_SEL_{UPP,LO}WER

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Protect the macro parameters with parens in order to avoid priority
issues on macro evaluation when the macro argument is not a single
operand.

This is not a problem today, but it could be in the future. I found
this while reviewing a patch that introduces new callers for the
macros.

v2: Rebase.

Reference: commit 04416108cc ("drm/i915/cnl: Add registers related to voltage swing sequences.")
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180323195853.4599-1-paulo.r.zanoni@intel.com

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This commit is contained in:

Paulo Zanoni 2018-03-23 12:58:53 -07:00

parent 323301af97

commit 7487508eff

1 changed files with 2 additions and 2 deletions

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drivers/gpu/drm/i915/i915_reg.h

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