Commit 5021282c authored by Seiichi Ikarashi's avatar Seiichi Ikarashi Committed by Rafael J. Wysocki

powercap / RAPL: disable the 2nd power limit properly

Let rapl_unregister_powercap() disable the second power limit
only if it exists.
Intel64 SDM Vol.3 14.9 says that the package domain has it
but neither the power plane domain nor the DRAM domain has it.
Signed-off-by: 's avatarSeiichi Ikarashi <>
Signed-off-by: 's avatarRafael J. Wysocki <>
parent 4e0bec9e
......@@ -1147,9 +1147,11 @@ static int rapl_unregister_powercap(void)
pr_debug("remove package, undo power limit on %d: %s\n",
rp->id, rd->name);
rapl_write_data_raw(rd, PL1_ENABLE, 0);
rapl_write_data_raw(rd, PL2_ENABLE, 0);
rapl_write_data_raw(rd, PL1_CLAMP, 0);
rapl_write_data_raw(rd, PL2_CLAMP, 0);
if (find_nr_power_limit(rd) > 1) {
rapl_write_data_raw(rd, PL2_ENABLE, 0);
rapl_write_data_raw(rd, PL2_CLAMP, 0);
if (rd->id == RAPL_DOMAIN_PACKAGE) {
rd_package = rd;
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