From: Alex Williamson <alex.williamson@hp.com>
Date: Thu, 30 Jul 2009 22:15:18 +0000 (-0600)
Subject: iommu=pt is a valid early param
X-Git-Tag: firefly_0821_release~12442^2~18
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=cfc65dd57967f2e0c7b3a8b73e6d12470b1cf1c1;p=firefly-linux-kernel-4.4.55.git

iommu=pt is a valid early param

This avoids a "Malformed early option 'iommu'" warning on boot when
trying to use pass-through mode.

Signed-off-by: Alex Williamson <alex.williamson@hp.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
---

diff --git a/arch/x86/kernel/pci-dma.c b/arch/x86/kernel/pci-dma.c
index 1a041bcf506b..ae13e34f7248 100644
--- a/arch/x86/kernel/pci-dma.c
+++ b/arch/x86/kernel/pci-dma.c
@@ -212,10 +212,8 @@ static __init int iommu_setup(char *p)
 		if (!strncmp(p, "soft", 4))
 			swiotlb = 1;
 #endif
-		if (!strncmp(p, "pt", 2)) {
+		if (!strncmp(p, "pt", 2))
 			iommu_pass_through = 1;
-			return 1;
-		}
 
 		gart_parse_options(p);