[PATCH] only try to find radeon IGP ROM on X86

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To prevent hangs on non-PC machines (e.g. sparc64), probe Radeon ROM 
from ATI IGP only on X86. Fixes hang in this place and allows PCI radeon 
detection to move on to next problem.

Signed-off-by: Meelis Roos <mroos@xxxxxxxx>

diff --git a/drivers/gpu/drm/radeon/radeon_bios.c b/drivers/gpu/drm/radeon/radeon_bios.c
index 061b227..48ef97c 100644
--- a/drivers/gpu/drm/radeon/radeon_bios.c
+++ b/drivers/gpu/drm/radeon/radeon_bios.c
@@ -49,6 +49,11 @@ static bool igp_read_bios_from_vram(struct radeon_device *rdev)
 	resource_size_t vram_base;
 	resource_size_t size = 256 * 1024; /* ??? */
 
+#ifndef CONFIG_X86
+	/* IGP only exists on X86 (32- and 64-bit) */
+	return false;
+#endif
+
 	if (!(rdev->flags & RADEON_IS_IGP))
 		if (!radeon_card_posted(rdev))
 			return false;

-- 
Meelis Roos (mroos@xxxxxxxx)
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