extra/linux-pae: added ACPI C3 patch

2 files changed, 23 insertions, 0 deletions

diff --git a/extra/linux-pae/PKGBUILD b/extra/linux-pae/PKGBUILD
index ff778dcc..00448631 100644
--- a/extra/linux-pae/PKGBUILD
+++ b/extra/linux-pae/PKGBUILD
@@ -218,3 +218,14 @@ for _p in ${pkgname[@]}; do
 done
 
 # vim:set ts=8 sts=2 sw=2 et:
+
+# https://bbs.archlinux32.org/viewtopic.php?pid=9109#p9109
+# avoid "sleepy" VIA C7 CPUs (and possibly others)
+source+=('acpi-c3.patch')
+sha256sums+=('fc44aaf0b68abc9502fd4e0f73345c53b756566b532005466b106bacc9f9bc9c')
+eval "$(
+  declare -f prepare | \
+    sed '
+      /cd/ a patch -Np1 -i $srcdir/acpi-c3.patch
+    '
+)"
diff --git a/extra/linux-pae/acpi-c3.patch b/extra/linux-pae/acpi-c3.patch
new file mode 100644
index 00000000..a5b79972
--- /dev/null
+++ b/extra/linux-pae/acpi-c3.patch
@@ -0,0 +1,12 @@
+diff -rauN a/drivers/acpi/processor_idle.c b/drivers/acpi/processor_idle.c
+--- a/drivers/acpi/processor_idle.c	2022-05-02 21:01:51.302162225 +0200
++++ b/drivers/acpi/processor_idle.c	2022-05-02 21:04:58.169438104 +0200
+@@ -796,6 +796,8 @@
+ 		    cx->type == ACPI_STATE_C3) {
+ 			state->enter_dead = acpi_idle_play_dead;
+ 			drv->safe_state_index = count;
++			if (cx->type != ACPI_STATE_C3)
++				drv->safe_state_index = count;
+ 		}
+ 		/*
+ 		 * Halt-induced C1 is not good for ->enter_s2idle, because it