# --- T2-COPYRIGHT-NOTE-BEGIN ---
# T2 SDE: package/*/linux/hotfix-sunw-poweroff.patch
# Copyright (C) 2023 The T2 SDE Project
# 
# This Copyright note is generated by scripts/Create-CopyPatch,
# more information can be found in the files COPYING and README.
# 
# This patch file is dual-licensed. It is available under the license the
# patched project is licensed under, as long as it is an OpenSource license
# as defined at http://www.opensource.org/ (e.g. BSD, X11) or under the terms
# of the GNU General Public License version 2 as used by the T2 SDE.
# --- T2-COPYRIGHT-NOTE-END ---

Instead of open coding an inf. loop around prom power-off and reboot,
let's reuse machine_halt so we get to see an actual error (panic) if
it ever fails.

  Signed-off-by: René Rebe <rene@exactcode.de>

--- linux-6.5/arch/sparc/include/asm/oplib_64.h.vanilla	2023-09-07 13:11:02.018226643 +0200
+++ linux-6.5/arch/sparc/include/asm/oplib_64.h	2023-09-07 13:11:21.690225350 +0200
@@ -85,10 +85,10 @@
 /* Enter the prom, with no chance of continuation for the stand-alone
  * which calls this.
  */
-void prom_halt(void) __attribute__ ((noreturn));
+void prom_halt(void);
 
 /* Halt and power-off the machine. */
-void prom_halt_power_off(void) __attribute__ ((noreturn));
+void prom_halt_power_off(void);
 
 /* Acquire the IDPROM of the root node in the prom device tree.  This
  * gets passed a buffer where you would like it stuffed.  The return value
--- linux-6.5/arch/sparc/prom/misc_64.c.old	2023-08-27 23:49:51.000000000 +0200
+++ linux-6.5/arch/sparc/prom/misc_64.c	2023-09-02 22:52:06.515405612 +0200
@@ -120,12 +120,10 @@
 	if (ldom_domaining_enabled)
 		ldom_power_off();
 #endif
-again:
 	args[0] = (unsigned long) "exit";
 	args[1] = 0;
 	args[2] = 0;
 	p1275_cmd_direct(args);
-	goto again; /* PROM is out to get me -DaveM */
 }
 
 void prom_halt_power_off(void)
@@ -140,9 +138,6 @@
 	args[1] = 0;
 	args[2] = 0;
 	p1275_cmd_direct(args);
-
-	/* if nothing else helps, we just halt */
-	prom_halt();
 }
 
 /* Get the idprom and stuff it into buffer 'idbuf'.  Returns the
--- linux-6.5/arch/sparc/kernel/reboot.c.old	2023-08-27 23:49:51.000000000 +0200
+++ linux-6.5/arch/sparc/kernel/reboot.c	2023-09-02 22:53:54.458398515 +0200
@@ -29,7 +29,7 @@
 	if (!of_node_is_type(of_console_device, "serial") || scons_pwroff)
 		prom_halt_power_off();
 
-	prom_halt();
+	machine_halt();
 }
 
 void machine_halt(void)