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authorJesse Barnes <jbarnes@virtuousgeek.org>2010-10-05 18:26:22 (GMT)
committerMatthew Garrett <mjg@redhat.com>2010-10-05 18:59:25 (GMT)
commit4fd07ac00d87b942cc8d8f30a27192fea2fc4ab2 (patch)
tree64b9b818b8a1ae4f01a3adee62e3f2474025b058 /drivers
parent070c0ee1ef9f5550cac9247190f0289349f28c01 (diff)
downloadlinux-4fd07ac00d87b942cc8d8f30a27192fea2fc4ab2.tar.xz
IPS driver: apply BIOS provided CPU limit if different from default
The BIOS may hand us a lower CPU power limit than the default for a given SKU. We should use it in case the platform isn't designed to dissapate the full TDP of a given part. Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org> Signed-off-by: Matthew Garrett <mjg@redhat.com>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/platform/x86/intel_ips.c7
1 files changed, 4 insertions, 3 deletions
diff --git a/drivers/platform/x86/intel_ips.c b/drivers/platform/x86/intel_ips.c
index 76e41dc..50ab1c9 100644
--- a/drivers/platform/x86/intel_ips.c
+++ b/drivers/platform/x86/intel_ips.c
@@ -1391,9 +1391,10 @@ static struct ips_mcp_limits *ips_detect_cpu(struct ips_driver *ips)
tdp = turbo_power & TURBO_TDP_MASK;
/* Sanity check TDP against CPU */
- if (limits->mcp_power_limit != (tdp / 8) * 1000) {
- dev_warn(&ips->dev->dev, "Warning: CPU TDP doesn't match expected value (found %d, expected %d)\n",
- tdp / 8, limits->mcp_power_limit / 1000);
+ if (limits->core_power_limit != (tdp / 8) * 1000) {
+ dev_info(&ips->dev->dev, "CPU TDP doesn't match expected value (found %d, expected %d)\n",
+ tdp / 8, limits->core_power_limit / 1000);
+ limits->core_power_limit = (tdp / 8) * 1000;
}
out: