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drm/i915/gmch: avoid unused variable warning

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When CONFIG_PNP is disabled, the mchbar_addr variable is only written but
not read:

drivers/gpu/drm/i915/soc/intel_gmch.c: In function 'intel_alloc_mchbar_resource':
drivers/gpu/drm/i915/soc/intel_gmch.c:41:13: error: variable 'mchbar_addr' set but not used [-Werror=unused-but-set-variable]
   41 |         u64 mchbar_addr;
      |             ^~~~~~~~~~~

No idea why this showed up now, but it's easy to fix by changing the #ifdef to
an IS_ENABLED() check that the compiler can see through.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Andi Shyti <andi.shyti@linux.intel.com>
Signed-off-by: Andi Shyti <andi.shyti@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230612124408.521325-1-arnd@kernel.org
This commit is contained in:
Arnd Bergmann 2023-06-12 14:43:59 +02:00 committed by Andi Shyti
parent 69f06e4fa0
commit b02a9a0c6c
1 changed files with 1 additions and 3 deletions
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4
drivers/gpu/drm/i915/soc/intel_gmch.c
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@ -47,11 +47,9 @@ intel_alloc_mchbar_resource(struct drm_i915_private *i915)
mchbar_addr = ((u64)temp_hi << 32) | temp_lo;
/* If ACPI doesn't have it, assume we need to allocate it ourselves */
#ifdef CONFIG_PNP
if (mchbar_addr &&
if (IS_ENABLED(CONFIG_PNP) && mchbar_addr &&
pnp_range_reserved(mchbar_addr, mchbar_addr + MCHBAR_SIZE))
return 0;
#endif
/* Get some space for it */
i915->gmch.mch_res.name = "i915 MCHBAR";