[Intel-gfx] [PATCH 2/4] drm/i915/uncore: cast iomem to avoid sparse warning

[Jani Nikula <jani.nikula@intel.com>]

drmm_add_action_or_reset() is unaware of __iomem and the pointer needs
to be a plain void *. Cast __iomem away and back while the pointer goes
through drmm.

drivers/gpu/drm/i915/intel_uncore.c:2463:17: warning: incorrect type in argument 1 (different address spaces)
drivers/gpu/drm/i915/intel_uncore.c:2463:17:    expected void volatile [noderef] __iomem *addr
drivers/gpu/drm/i915/intel_uncore.c:2463:17:    got void *regs
drivers/gpu/drm/i915/intel_uncore.c:2494:16: warning: incorrect type in argument 3 (different address spaces)
drivers/gpu/drm/i915/intel_uncore.c:2494:16:    expected void *data
drivers/gpu/drm/i915/intel_uncore.c:2494:16:    got void [noderef] __iomem *regs

Cc: Matt Roper <matthew.d.roper@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
---
 drivers/gpu/drm/i915/intel_uncore.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_uncore.c b/drivers/gpu/drm/i915/intel_uncore.c
index 8dee9e62a73e..f018da7ebaac 100644
--- a/drivers/gpu/drm/i915/intel_uncore.c
+++ b/drivers/gpu/drm/i915/intel_uncore.c
@@ -2460,7 +2460,7 @@ static int i915_pmic_bus_access_notifier(struct notifier_block *nb,
 
 static void uncore_unmap_mmio(struct drm_device *drm, void *regs)
 {
-	iounmap(regs);
+	iounmap((void __iomem *)regs);
 }
 
 int intel_uncore_setup_mmio(struct intel_uncore *uncore, phys_addr_t phys_addr)
@@ -2491,7 +2491,8 @@ int intel_uncore_setup_mmio(struct intel_uncore *uncore, phys_addr_t phys_addr)
 		return -EIO;
 	}
 
-	return drmm_add_action_or_reset(&i915->drm, uncore_unmap_mmio, uncore->regs);
+	return drmm_add_action_or_reset(&i915->drm, uncore_unmap_mmio,
+					(void __force *)uncore->regs);
 }
 
 void intel_uncore_init_early(struct intel_uncore *uncore,
-- 
2.34.1