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m68k/mac: Kill psc_present 

The presence of the Apple Peripheral System Controller (PSC) can be
tested for by just checking its base address pointer.

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
This commit is contained in:
Geert Uytterhoeven 2015-09-29 09:27:22 +02:00
parent 1ec218373b
commit 70bc53b473
3 changed files with 6 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
arch/m68k/include/asm/mac_psc.h
View File

@ -209,7 +209,6 @@
#ifndef __ASSEMBLY__
extern volatile __u8 *psc;
extern int psc_present;
extern void psc_register_interrupts(void);
extern void psc_irq_enable(int);

6
arch/m68k/mac/macints.c
View File

@ -174,7 +174,7 @@ void __init mac_init_IRQ(void)
oss_register_interrupts();
else
via_register_interrupts();
if (psc_present)
if (psc)
psc_register_interrupts();
if (baboon_present)
baboon_register_interrupts();
@ -212,7 +212,7 @@ void mac_irq_enable(struct irq_data *data)
case 4:
case 5:
case 6:
if (psc_present)
if (psc)
psc_irq_enable(irq);
else if (oss_present)
oss_irq_enable(irq);
@ -242,7 +242,7 @@ void mac_irq_disable(struct irq_data *data)
case 4:
case 5:
case 6:
if (psc_present)
if (psc)
psc_irq_disable(irq);
else if (oss_present)
oss_irq_disable(irq);

7
arch/m68k/mac/psc.c
View File

@ -27,7 +27,6 @@
#define DEBUG_PSC
int psc_present;
volatile __u8 *psc;
EXPORT_SYMBOL_GPL(psc);
@ -39,7 +38,9 @@ static void psc_debug_dump(void)
{
int i;
if (!psc_present) return;
if (!psc)
return;
for (i = 0x30 ; i < 0x70 ; i += 0x10) {
printk("PSC #%d: IFR = 0x%02X IER = 0x%02X\n",
i >> 4,
@ -81,7 +82,6 @@ void __init psc_init(void)
&& macintosh_config->ident != MAC_MODEL_Q840)
{
psc = NULL;
psc_present = 0;
return;
}
@ -91,7 +91,6 @@ void __init psc_init(void)
*/
psc = (void *) PSC_BASE;
psc_present = 1;
printk("PSC detected at %p\n", psc);