From: Tvrtko Ursulin <tvrtko.ursu...@intel.com>
Handling of intel_iommu kernel command line option should return "true" to
indicate option is valid and so avoid logging it as unknown by the core
parsing code.
Also log unknown sub-options at the notice level to let user know of
potential typos or similar.
Signed-off-by: Tvrtko Ursulin <tvrtko.ursu...@intel.com>
Reported-by: Eero Tamminen <eero.t.tammi...@intel.com>
Cc: Lu Baolu <baolu...@linux.intel.com>
---
drivers/iommu/intel/iommu.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/iommu/intel/iommu.c b/drivers/iommu/intel/iommu.c
index 327f477a8553..41d163e275b2 100644
--- a/drivers/iommu/intel/iommu.c
+++ b/drivers/iommu/intel/iommu.c
@@ -463,13 +463,15 @@ static int __init intel_iommu_setup(char *str)
} else if (!strncmp(str, "tboot_noforce", 13)) {
pr_info("Intel-IOMMU: not forcing on after tboot. This
could expose security risk for tboot\n");
intel_iommu_tboot_noforce = 1;
+ } else {
+ pr_notice("Unknown option - '%s'\n", str);
}
str += strcspn(str, ",");
while (*str == ',')
str++;
}
- return 0;
+ return 1;
}
__setup("intel_iommu=", intel_iommu_setup);
--
2.30.2
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