From 9206880198589670dfc33feb9d2e903c3492701f Mon Sep 17 00:00:00 2001 From: Corey Minyard Date: Sun, 1 May 2005 08:59:10 -0700 Subject: [PATCH] [PATCH] IPMI: fix for handling bad IPMI DMI data 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 Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/char/ipmi/ipmi_si_intf.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/drivers/char/ipmi/ipmi_si_intf.c b/drivers/char/ipmi/ipmi_si_intf.c index 44a7f13..3522723 100644 --- a/drivers/char/ipmi/ipmi_si_intf.c +++ b/drivers/char/ipmi/ipmi_si_intf.c @@ -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; } -- 1.8.2.3