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[PATCH] Make number of IDE interfaces configurable 

Make IDE_HWIFS configurable if EMBEDDED

This lets us lop as much as 16k off an x86 build.  It's a little ugly, but
it's dead simple.  Note the fix for HWIFS < 2.

Sizing interfaces dynamically unfortunately turns out to be pretty
major surgery.

add/remove: 0/1 grow/shrink: 0/11 up/down: 0/-16182 (-16182)
function                                     old     new   delta
ide_hwifs                                  16920    1692  -15228
init_irq                                    1113     750    -363
ideprobe_init                                283     138    -145
ide_pci_setup_ports                         1329    1193    -136
save_match                                    85       -     -85
ide_register_hw_with_fixup                   367     287     -80
ide_setup                                   1364    1308     -56
is_chipset_set                                40       4     -36
create_proc_ide_interfaces                   225     205     -20
init_ide_data                                 84      67     -17
ide_probe_for_cmd640x                       1198    1183     -15
ide_unregister                              1452    1451      -1

Signed-off-by: Matt Mackall <mpm@selenic.com>
Cc: Bartlomiej Zolnierkiewicz <B.Zolnierkiewicz@elka.pw.edu.pl>
Acked-by: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Matt Mackall 2006-10-03 01:14:16 -07:00 committed by Linus Torvalds
parent ce42f19137
commit 83d7dbc409
3 changed files with 4 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/ide/Kconfig
View File

@ -56,7 +56,7 @@ if IDE
config IDE_MAX_HWIFS
int "Max IDE interfaces"
depends on ALPHA || SUPERH || IA64
depends on ALPHA || SUPERH || IA64 || EMBEDDED
default 4
help
This is the maximum number of IDE hardware interfaces that will

2
drivers/ide/setup-pci.c
View File

@ -101,7 +101,7 @@ static ide_hwif_t *ide_match_hwif(unsigned long io_base, u8 bootable, const char
return hwif; /* pick an unused entry */
}
}
for (h = 0; h < 2; ++h) {
for (h = 0; h < 2 && h < MAX_HWIFS; ++h) {
hwif = ide_hwifs + h;
if (hwif->chipset == ide_unknown)
return hwif; /* pick an unused entry */

3
include/linux/ide.h
View File

@ -251,7 +251,8 @@ static inline void ide_std_init_ports(hw_regs_t *hw,
#include <asm/ide.h>
#ifndef MAX_HWIFS
#if !defined(MAX_HWIFS) || defined(CONFIG_EMBEDDED)
#undef MAX_HWIFS
#define MAX_HWIFS CONFIG_IDE_MAX_HWIFS
#endif