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powerpc: Fix crash in early boot on some powermacs 

Some powermac machines were crashing in the quiesce firmware call
in prom_init.c because we have just closed the OF stdin device;
notably my 1999 G3 powerbook does this.  To avoid this, don't
close the OF stdin device on powermacs.

Signed-off-by: Paul Mackerras <paulus@samba.org>
This commit is contained in:
Paul Mackerras 2005-11-08 22:48:08 +11:00
parent 7e9191daf6
commit 3825ac0ee6
1 changed files with 7 additions and 2 deletions
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9
arch/powerpc/kernel/prom_init.c
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@ -2081,8 +2081,13 @@ unsigned long __init prom_init(unsigned long r3, unsigned long r4,
prom_printf("copying OF device tree ...\n");
flatten_device_tree();
/* in case stdin is USB and still active on IBM machines... */
prom_close_stdin();
/*
* in case stdin is USB and still active on IBM machines...
* Unfortunately quiesce crashes on some powermacs if we have
* closed stdin already (in particular the powerbook 101).
*/
if (RELOC(of_platform) != PLATFORM_POWERMAC)
prom_close_stdin();
/*
* Call OF "quiesce" method to shut down pending DMA's from