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[PARISC] pdc_console: fix bizarre panic on boot

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Commit 721fdf3416 introduced a subtle bug
by accidently removing the "static" from iodc_dbuf. This resulted in, what
appeared to be, a trap without *current set to a task. Probably the result of
a trap in real mode while calling firmware.

Also do other misc clean ups. Since the only input from firmware is non
blocking, share iodc_dbuf between input and output, and spinlock the
only callers.

Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
This commit is contained in:
Kyle McMartin
2008-02-18 23:34:34 -08:00
parent d0347b49c9
commit ef1afd4d79
3 changed files with 35 additions and 13 deletions
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2
include/asm-parisc/pdc.h
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@@ -645,7 +645,7 @@ int pdc_soft_power_button(int sw_control);
void pdc_io_reset(void);
void pdc_io_reset_devices(void);
int pdc_iodc_getc(void);
int pdc_iodc_print(unsigned char *str, unsigned count);
int pdc_iodc_print(const unsigned char *str, unsigned count);
void pdc_emergency_unlock(void);
int pdc_sti_call(unsigned long func, unsigned long flags,