Commit 58d65ccb authored May 12, 2015 by Mitchel Humpherys Committed by Matt Wagantall Jun 05, 2015

iommu: add more debug for iommu_pgsize failure

We're currently BUG()'ing when we can't find a valid IOMMU page size
without printing any other information. Add some more information about
the parameters passed to the function to aide in debugging.

Change-Id: I1797bdfa2ef9d899ef4ffcb36fea769b67a1f991
Signed-off-by: Mitchel Humpherys <mitchelh@codeaurora.org>

parent 313fcc8f

drivers/iommu/iommu.c

+5 −1

Original line number	Diff line number	Diff line
		@@ -1014,7 +1014,11 @@ size_t iommu_pgsize(unsigned long pgsize_bitmap,
		pgsize &= pgsize_bitmap;

		/* make sure we're still sane */
		BUG_ON(!pgsize);
		if (!pgsize) {
		pr_err("invalid pgsize/addr/size! 0x%lx 0x%lx 0x%zx\n",
		pgsize_bitmap, addr_merge, size);
		BUG();
		}

		/* pick the biggest page */
		pgsize_idx = __fls(pgsize);