Re: Regression in serial console on ia64 after 2.6.22

[Yinghai Lu]

IA64

Subject         : Regression in serial console on ia64 after 2.6.22
References      : http://marc.info/?l=linux-ia64&m=118483645914066&w=2
Last known good : ?
Submitter       : Horms <[EMAIL PROTECTED]>
Caused-By       : Yinghai Lu <[EMAIL PROTECTED]>
                  commit 18a8bd949d6adb311ea816125ff65050df1f3f6e
Handled-By      : ?
Status          : unknown


please test this patch.

YH


[PATCH] ia64: move machvec_init before parse_early_param

So ia64_mv is initialized before early console

Signed-off-by: Yinghai Lu <[EMAIL PROTECTED]>

diff --git a/arch/ia64/kernel/machvec.c b/arch/ia64/kernel/machvec.c
index 13df337..a94feaa 100644
--- a/arch/ia64/kernel/machvec.c
+++ b/arch/ia64/kernel/machvec.c
@@ -14,12 +14,6 @@ struct ia64_machine_vector ia64_mv;
 EXPORT_SYMBOL(ia64_mv);
 
 static __initdata const char *mvec_name;
-static __init int setup_mvec(char *s)
-{
-       mvec_name = s;
-       return 0;
-}
-early_param("machvec", setup_mvec);
 
 static struct ia64_machine_vector * __init
 lookup_machvec (const char *name)
@@ -42,6 +36,10 @@ machvec_init (const char *name)
 
        if (!name)
                name = mvec_name ? mvec_name : acpi_get_sysname();
+
+       if (!mvec_name)
+               mvec_name = name;
+
        mv = lookup_machvec(name);
        if (!mv)
                panic("generic kernel failed to find machine vector for"
diff --git a/arch/ia64/kernel/setup.c b/arch/ia64/kernel/setup.c
index cf06fe7..b06d7b7 100644
--- a/arch/ia64/kernel/setup.c
+++ b/arch/ia64/kernel/setup.c
@@ -481,6 +481,9 @@ int __init reserve_elfcorehdr(unsigned long *start, 
unsigned long *end)
 void __init
 setup_arch (char **cmdline_p)
 {
+#ifdef CONFIG_IA64_GENERIC
+       char *mvstr;
+#endif
        unw_init();
 
        ia64_patch_vtop((u64) __start___vtop_patchlist, (u64) 
__end___vtop_patchlist);
@@ -491,12 +494,15 @@ setup_arch (char **cmdline_p)
        efi_init();
        io_port_init();
 
-       parse_early_param();
-
 #ifdef CONFIG_IA64_GENERIC
-       machvec_init(NULL);
+       mvstr = strstr(*cmd_line_p, "machvec=")
+       if (mvstr)
+               mvstr = strchr(mvstr, '=') + 1;
+       machvec_init(mvstr);
 #endif
 
+       parse_early_param();
+
        if (early_console_setup(*cmdline_p) == 0)
                mark_bsp_online();
 


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