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| author | Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> | 2008-06-15 23:00:24 +0400 |
|---|---|---|
| committer | Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> | 2008-06-15 23:00:24 +0400 |
| commit | 0cbccbc30a60ff60dbeb203154f1f527c632de9b (patch) | |
| tree | 0eb7a98fd8dbfef6e2d261d1e208bce831b51fa8 /drivers/ide/ide-generic.c | |
| parent | fbc69fd9b76158daaa83e5372e44fdd81df20f92 (diff) | |
| download | linux-0cbccbc30a60ff60dbeb203154f1f527c632de9b.tar.xz | |
ide-generic: don't probe all legacy ISA IDE ports by default
We can't probe all legacy ISA IDE ports by default as the resources may be
occupied by other ISA devices. Add "probe_mask" module parameter and probe
only first two ISA IDE ports by default leaving the decision about probing
the rest to the user (systems with ISA ide2-6 should be very, very rare).
This fixes a regression caused by:
commit 343a3451e20314d5959b59b992e33fbaadfe52bf
Author: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Date: Tue Jun 10 20:56:36 2008 +0200
ide-generic: add missing hwif->chipset setup
...
Reported-by: Mikael Pettersson <mikpe@it.uu.se>
Bisected-by: Mikael Pettersson <mikpe@it.uu.se>
Tested-by: Mikael Pettersson <mikpe@it.uu.se>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Diffstat (limited to 'drivers/ide/ide-generic.c')
| -rw-r--r-- | drivers/ide/ide-generic.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/drivers/ide/ide-generic.c b/drivers/ide/ide-generic.c index 9134488ac043..2d92214096ab 100644 --- a/drivers/ide/ide-generic.c +++ b/drivers/ide/ide-generic.c @@ -22,6 +22,10 @@ #define DRV_NAME "ide_generic" +static int probe_mask = 0x03; +module_param(probe_mask, int, 0); +MODULE_PARM_DESC(probe_mask, "probe mask for legacy ISA IDE ports"); + static ssize_t store_add(struct class *cls, const char *buf, size_t n) { ide_hwif_t *hwif; @@ -89,6 +93,9 @@ static int __init ide_generic_init(void) u8 idx[MAX_HWIFS]; int i; + printk(KERN_INFO DRV_NAME ": please use \"probe_mask=0x3f\" module " + "parameter for probing all legacy ISA IDE ports\n"); + for (i = 0; i < MAX_HWIFS; i++) { ide_hwif_t *hwif; unsigned long io_addr = ide_default_io_base(i); @@ -96,7 +103,7 @@ static int __init ide_generic_init(void) idx[i] = 0xff; - if (io_addr) { + if ((probe_mask & (1 << i)) && io_addr) { if (!request_region(io_addr, 8, DRV_NAME)) { printk(KERN_ERR "%s: I/O resource 0x%lX-0x%lX " "not free.\n", |