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| author |   Dominik Brodowski <linux@dominikbrodowski.net> | 2010-03-23 16:05:00 +0100 |
|---|---|---|
| committer | Dominik Brodowski <linux@dominikbrodowski.net> | 2010-03-23 18:55:23 +0100 |
| commit | 9713ab28ec92d0c44b2ac5765dfc26c619d9cadd (patch) | |
| tree | 99de9e1d40d6dfb166811e038727611615ff11fa /drivers/pcmcia/rsrc_nonstatic.c | |
| parent | pd6729: Coding Style fixes (diff) | |
| download | linux-dev-9713ab28ec92d0c44b2ac5765dfc26c619d9cadd.tar.xz linux-dev-9713ab28ec92d0c44b2ac5765dfc26c619d9cadd.zip | |
pcmcia: do not use ioports < 0x100 on x86
On x86 systems using ACPI _CRS information -- now the default for
post-2008 systems -- the PCI root bus no longer pretends to be
offering the root ioport_resource. To avoid accidentally hitting
some platform / system device, use only I/O ports >= 0x100 for
PCMCIA devices on x86.
Reported-by: Komuro <komurojun-mbn@nifty.com>
CC: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
Diffstat (limited to 'drivers/pcmcia/rsrc_nonstatic.c')
| -rw-r--r-- | drivers/pcmcia/rsrc_nonstatic.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/pcmcia/rsrc_nonstatic.c b/drivers/pcmcia/rsrc_nonstatic.c index 4663b3fa9f96..dcc602134d90 100644 --- a/drivers/pcmcia/rsrc_nonstatic.c +++ b/drivers/pcmcia/rsrc_nonstatic.c @@ -810,6 +810,13 @@ static int adjust_io(struct pcmcia_socket *s, unsigned int action, unsigned long unsigned long size = end - start + 1; int ret = 0; +#if defined(CONFIG_X86) + /* on x86, avoid anything < 0x100 for it is often used for + * legacy platform devices */ + if (start < 0x100) + start = 0x100; +#endif + if (end < start) return -EINVAL; |