From: Oliver O'Halloran <oohall@gmail.com>
Date: Tue, 21 Apr 2020 08:15:39 +0000 (+1000)
Subject: powerpc/pseries: Make vio and ibmebus initcalls pseries specific
X-Git-Tag: v5.8-rc1~132^2~1
X-Git-Url: https://git.kernel.dk/?a=commitdiff_plain;h=4336b9337824;p=linux-block.git

powerpc/pseries: Make vio and ibmebus initcalls pseries specific

The vio and ibmebus buses are used for pseries specific
paravirtualised devices and currently they're initialised by the
generic initcall types. This is mostly fine, but it can result in some
nuisance errors in dmesg when booting on PowerNV on some OSes, e.g.

  [    2.984439] synth uevent: /devices/vio: failed to send uevent
  [    2.984442] vio vio: uevent: failed to send synthetic uevent
  [   17.968551] synth uevent: /devices/vio: failed to send uevent
  [   17.968554] vio vio: uevent: failed to send synthetic uevent

We don't see anything similar for the ibmebus because that depends on
!CONFIG_LITTLE_ENDIAN.

This patch squashes those by switching to using machine_*_initcall()
so the bus type is only registered when the kernel is running on a
pseries machine.

Signed-off-by: Oliver O'Halloran <oohall@gmail.com>
Reviewed-by: Tyrel Datwyler <tyreld@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20200421081539.7485-1-oohall@gmail.com
---

diff --git a/arch/powerpc/platforms/pseries/ibmebus.c b/arch/powerpc/platforms/pseries/ibmebus.c
index b91eb0929ed1..a6f101c958e8 100644
--- a/arch/powerpc/platforms/pseries/ibmebus.c
+++ b/arch/powerpc/platforms/pseries/ibmebus.c
@@ -47,6 +47,7 @@
 #include <linux/stat.h>
 #include <linux/of_platform.h>
 #include <asm/ibmebus.h>
+#include <asm/machdep.h>
 
 static struct device ibmebus_bus_device = { /* fake "parent" device */
 	.init_name = "ibmebus",
@@ -464,4 +465,4 @@ static int __init ibmebus_bus_init(void)
 
 	return 0;
 }
-postcore_initcall(ibmebus_bus_init);
+machine_postcore_initcall(pseries, ibmebus_bus_init);
diff --git a/arch/powerpc/platforms/pseries/vio.c b/arch/powerpc/platforms/pseries/vio.c
index 37f1f25ba804..0487b26f6f1a 100644
--- a/arch/powerpc/platforms/pseries/vio.c
+++ b/arch/powerpc/platforms/pseries/vio.c
@@ -31,6 +31,7 @@
 #include <asm/tce.h>
 #include <asm/page.h>
 #include <asm/hvcall.h>
+#include <asm/machdep.h>
 
 static struct vio_dev vio_bus_device  = { /* fake "parent" device */
 	.name = "vio",
@@ -1513,7 +1514,7 @@ static int __init vio_bus_init(void)
 
 	return 0;
 }
-postcore_initcall(vio_bus_init);
+machine_postcore_initcall(pseries, vio_bus_init);
 
 static int __init vio_device_init(void)
 {
@@ -1522,7 +1523,7 @@ static int __init vio_device_init(void)
 
 	return 0;
 }
-device_initcall(vio_device_init);
+machine_device_initcall(pseries, vio_device_init);
 
 static ssize_t name_show(struct device *dev,
 		struct device_attribute *attr, char *buf)
@@ -1703,4 +1704,4 @@ static int __init vio_init(void)
 	dma_debug_add_bus(&vio_bus_type);
 	return 0;
 }
-fs_initcall(vio_init);
+machine_fs_initcall(pseries, vio_init);