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authorOlaf Hering <olaf@aepfle.de>2006-09-30 23:27:57 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2006-10-01 00:39:23 -0700
commit30cbc22217bb3d5d4c74c88127fbf595460bdb76 (patch)
treeeab298c63f4dcf4ecd35f753da2e5ccf394a7718 /drivers/pnp
parentc69c31270c35a6b8421a8e4ba81de1247ac6df95 (diff)
downloadop-kernel-dev-30cbc22217bb3d5d4c74c88127fbf595460bdb76.zip
op-kernel-dev-30cbc22217bb3d5d4c74c88127fbf595460bdb76.tar.gz
[PATCH] update legacy io handling for pmac
ppc can boot one single binary on prep, chrp and pmac boards. ppc64 can boot one single binary on pseries and G5 boards. pmac has no legacy io, probing for PC style legacy hardware (or accessing the legacy io area regulary) may lead to a hard crash: * add check for parport_pc, exit on pmac. 32bit chrp has no ->check_legacy_ioport, the probe is always called. 64bit chrp has check_legacy_ioport, check for a "parallel" node * add check for isapnp, only PReP boards may have real ISA slots. 32bit PReP will have no ->check_legacy_ioport, the probe is always called. * update code in i8042_platform_init. Run ->check_legacy_ioport first, always call request_region. No functional change. Remove whitespace before i8042_reset init. Signed-off-by: Olaf Hering <olaf@aepfle.de> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Adam Belay <ambx1@neo.rr.com> Cc: Dmitry Torokhov <dtor@mail.ru> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'drivers/pnp')
-rw-r--r--drivers/pnp/pnpbios/core.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/pnp/pnpbios/core.c b/drivers/pnp/pnpbios/core.c
index 551f58e..81a6c83 100644
--- a/drivers/pnp/pnpbios/core.c
+++ b/drivers/pnp/pnpbios/core.c
@@ -526,6 +526,10 @@ static int __init pnpbios_init(void)
{
int ret;
+#if defined(CONFIG_PPC_MERGE)
+ if (check_legacy_ioport(PNPBIOS_BASE))
+ return -ENODEV;
+#endif
if (pnpbios_disabled || dmi_check_system(pnpbios_dmi_table)) {
printk(KERN_INFO "PnPBIOS: Disabled\n");
return -ENODEV;
@@ -575,6 +579,10 @@ subsys_initcall(pnpbios_init);
static int __init pnpbios_thread_init(void)
{
+#if defined(CONFIG_PPC_MERGE)
+ if (check_legacy_ioport(PNPBIOS_BASE))
+ return 0;
+#endif
if (pnpbios_disabled)
return 0;
#ifdef CONFIG_HOTPLUG
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