drm/i915: Silence __iomem sparse warn

We don't care about __iomem mismatch when dealing with error
pointers. Silence it with ERR_CAST().

drivers/gpu/drm/i915/display/intel_dpt.c:136:21: warning: incorrect type in assignment (different address spaces)
drivers/gpu/drm/i915/display/intel_dpt.c:136:21:    expected struct i915_vma *[assigned] vma
drivers/gpu/drm/i915/display/intel_dpt.c:136:21:    got void [noderef] __iomem *[assigned] iomem

v2: The code moved into intel_dpt.c

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210712161815.24776-1-ville.syrjala@linux.intel.com
Reviewed-by: Matthew Auld <matthew.auld@intel.com>

diff --git a/drivers/gpu/drm/i915/display/intel_dpt.c b/drivers/gpu/drm/i915/display/intel_dpt.c
index 22acd945a9e478cc6a329c6fcb52541a9c1521c1..de62bd77b15e6bf6c6a253656c095a34c49eacb9 100644 (file)
--- a/drivers/gpu/drm/i915/display/intel_dpt.c
+++ b/drivers/gpu/drm/i915/display/intel_dpt.c
@@ -133,7 +133,7 @@ struct i915_vma *intel_dpt_pin(struct i915_address_space *vm)
        iomem = i915_vma_pin_iomap(vma);
        i915_vma_unpin(vma);
        if (IS_ERR(iomem)) {
-               vma = iomem;
+               vma = ERR_CAST(iomem);
                goto err;
        }