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[PATCH] IPMI: fix for handling bad IPMI DMI data

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Ignore the bottom bit of the base address from the DMI data.  It is
supposed to be set to 1 if it is I/O space.  Few systems do this, but this
enables the ones that do set it to work properly.

Signed-off-by: Corey Minyard <minyard@acm.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Corey Minyard 2005-05-01 08:59:10 -07:00 committed by Linus Torvalds
parent 5717ffbe16
commit 9206880198
1 changed files with 7 additions and 1 deletions
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8
drivers/char/ipmi/ipmi_si_intf.c
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@ -1623,7 +1623,13 @@ static int decode_dmi(dmi_header_t *dm, int intf_num)
}
} else {
/* Old DMI spec. */
ipmi_data->base_addr = base_addr;
/* Note that technically, the lower bit of the base
* address should be 1 if the address is I/O and 0 if
* the address is in memory. So many systems get that
* wrong (and all that I have seen are I/O) so we just
* ignore that bit and assume I/O. Systems that use
* memory should use the newer spec, anyway. */
ipmi_data->base_addr = base_addr & 0xfffe;
ipmi_data->addr_space = IPMI_IO_ADDR_SPACE;
ipmi_data->offset = 1;
}