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Make /dev/port conditional on config symbol 

Instead of having /dev/port support dependent in multiple places on a
string of preprocessor symbols, define a new configuration directive for
it.  This ensures that all four places remain consistent with each other.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
hifive-unleashed-5.1
Russell King 2007-05-08 00:28:17 -07:00 committed by Linus Torvalds
parent 62456726d7
commit 4f911d64e0
2 changed files with 10 additions and 4 deletions
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6
drivers/char/Kconfig
View File

@ -1071,5 +1071,11 @@ config TELCLOCK
/sys/devices/platform/telco_clock, with a number of files for
controlling the behavior of this hardware.
config DEVPORT
bool
depends on !M68K
depends on ISA || PCI
default y
endmenu

8
drivers/char/mem.c
View File

@ -551,7 +551,7 @@ static ssize_t write_kmem(struct file * file, const char __user * buf,
return virtr + wrote;
}
#if (defined(CONFIG_ISA) || defined(CONFIG_PCI)) && !defined(__mc68000__)
#ifdef CONFIG_DEVPORT
static ssize_t read_port(struct file * file, char __user * buf,
size_t count, loff_t *ppos)
{
@ -834,7 +834,7 @@ static const struct file_operations null_fops = {
.splice_write = splice_write_null,
};
#if (defined(CONFIG_ISA) || defined(CONFIG_PCI)) && !defined(__mc68000__)
#ifdef CONFIG_DEVPORT
static const struct file_operations port_fops = {
.llseek = memory_lseek,
.read = read_port,
@ -912,7 +912,7 @@ static int memory_open(struct inode * inode, struct file * filp)
case 3:
filp->f_op = &null_fops;
break;
#if (defined(CONFIG_ISA) || defined(CONFIG_PCI)) && !defined(__mc68000__)
#ifdef CONFIG_DEVPORT
case 4:
filp->f_op = &port_fops;
break;
@ -959,7 +959,7 @@ static const struct {
{1, "mem", S_IRUSR | S_IWUSR | S_IRGRP, &mem_fops},
{2, "kmem", S_IRUSR | S_IWUSR | S_IRGRP, &kmem_fops},
{3, "null", S_IRUGO | S_IWUGO, &null_fops},
#if (defined(CONFIG_ISA) || defined(CONFIG_PCI)) && !defined(__mc68000__)
#ifdef CONFIG_DEVPORT
{4, "port", S_IRUSR | S_IWUSR | S_IRGRP, &port_fops},
#endif
{5, "zero", S_IRUGO | S_IWUGO, &zero_fops},