From 3f581602a22cc5445a66501fa13a80894d83e42a Mon Sep 17 00:00:00 2001 From: "David E. Box" Date: Wed, 12 Apr 2023 18:29:22 -0700 Subject: platform/x86/intel/pmt: Ignore uninitialized entries MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit On Intel Xeon, unused PMT regions will have uninitialized discovery headers containing all 0xF. Instead of returning an error, just skip the region. Signed-off-by: David E. Box Reviewed-by: Ilpo Järvinen Link: https://lore.kernel.org/r/20230413012922.1521377-1-david.e.box@linux.intel.com Signed-off-by: Hans de Goede --- drivers/platform/x86/intel/pmt/telemetry.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/platform') diff --git a/drivers/platform/x86/intel/pmt/telemetry.c b/drivers/platform/x86/intel/pmt/telemetry.c index 71cdef42084a..39cbc87cc28a 100644 --- a/drivers/platform/x86/intel/pmt/telemetry.c +++ b/drivers/platform/x86/intel/pmt/telemetry.c @@ -78,7 +78,7 @@ static int pmt_telem_header_decode(struct intel_pmt_entry *entry, * reserved for future use. They have zero size. Do not fail * probe for these. Just ignore them. */ - if (header->size == 0) + if (header->size == 0 || header->access_type == 0xF) return 1; return 0; -- cgit v1.2.3