mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-11-18 23:54:26 +08:00
193cac99f6
This stops parport from accessing nonexistent parallel ports. Signed-off-by: Michael Neuling <mikey@neuling.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
45 lines
1.2 KiB
C
45 lines
1.2 KiB
C
/*
|
|
* parport.h: platform-specific PC-style parport initialisation
|
|
*
|
|
* Copyright (C) 1999, 2000 Tim Waugh <tim@cyberelk.demon.co.uk>
|
|
*
|
|
* This file should only be included by drivers/parport/parport_pc.c.
|
|
*/
|
|
|
|
#ifndef _ASM_POWERPC_PARPORT_H
|
|
#define _ASM_POWERPC_PARPORT_H
|
|
#ifdef __KERNEL__
|
|
|
|
#include <asm/prom.h>
|
|
|
|
extern struct parport *parport_pc_probe_port (unsigned long int base,
|
|
unsigned long int base_hi,
|
|
int irq, int dma,
|
|
struct pci_dev *dev);
|
|
|
|
static int __devinit parport_pc_find_nonpci_ports (int autoirq, int autodma)
|
|
{
|
|
struct device_node *np;
|
|
u32 *prop;
|
|
u32 io1, io2;
|
|
int propsize;
|
|
int count = 0;
|
|
for (np = NULL; (np = of_find_compatible_node(np,
|
|
"parallel",
|
|
"pnpPNP,400")) != NULL;) {
|
|
prop = (u32 *)get_property(np, "reg", &propsize);
|
|
if (!prop || propsize > 6*sizeof(u32))
|
|
continue;
|
|
io1 = prop[1]; io2 = prop[2];
|
|
prop = (u32 *)get_property(np, "interrupts", NULL);
|
|
if (!prop)
|
|
continue;
|
|
if (parport_pc_probe_port(io1, io2, prop[0], autodma, NULL) != NULL)
|
|
count++;
|
|
}
|
|
return count;
|
|
}
|
|
|
|
#endif /* __KERNEL__ */
|
|
#endif /* !(_ASM_POWERPC_PARPORT_H) */
|