The patch titled Subject: ipmi: add new kernel options to prevent automatic ipmi init has been added to the -mm tree. Its filename is ipmi-add-new-kernel-options-to-prevent-automatic-ipmi-init.patch Before you just go and hit "reply", please: a) Consider who else should be cc'ed b) Prefer to cc a suitable mailing list as well c) Ideally: find the original patch on the mailing list and do a reply-to-all to that, adding suitable additional cc's *** Remember to use Documentation/SubmitChecklist when testing your code *** The -mm tree is included into linux-next and is updated there every 3-4 working days ------------------------------------------------------ From: Corey Minyard <cminyard@xxxxxxxxxx> Subject: ipmi: add new kernel options to prevent automatic ipmi init The configuration change building ipmi_si into the kernel precludes the use of a custom driver that can utilize more than one KCS interface, multiple IPMBs, and more than one BMC. This capability is important for fault-tolerant systems. Even if the kernel option ipmi_si.trydefaults=0 is specified, ipmi_si discovers and claims one of the KCS interfaces on a Stratus server. The inability to now prevent the kernel from managing this device is a regression from previous kernels. The regression breaks a capability fault-tolerant vendors have relied upon. To support both ACPI opregion access and the need to avoid activation of ipmi_si on some platforms, we've added two new kernel options, ipmi_si.tryacpi and ipmi_si.trydmi be added to prevent ipmi_si from initializing when these options are set to 0 on the kernel command line. With these options at the default value of 1, ipmi_si init proceeds according to the kernel default. Tested-by: Jim Paradis <jparadis@xxxxxxxxxx> Signed-off-by: Robert Evans <Robert.Evans@xxxxxxxxxxx> Signed-off-by: Jim Paradis <jparadis@xxxxxxxxxx> Signed-off-by: Tony Camuso <tcamuso@xxxxxxxxxx> Signed-off-by: Corey Minyard <cminyard@xxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- drivers/char/ipmi/ipmi_si_intf.c | 28 ++++++++++++++++++++++++---- 1 file changed, 24 insertions(+), 4 deletions(-) diff -puN drivers/char/ipmi/ipmi_si_intf.c~ipmi-add-new-kernel-options-to-prevent-automatic-ipmi-init drivers/char/ipmi/ipmi_si_intf.c --- a/drivers/char/ipmi/ipmi_si_intf.c~ipmi-add-new-kernel-options-to-prevent-automatic-ipmi-init +++ a/drivers/char/ipmi/ipmi_si_intf.c @@ -1208,6 +1208,12 @@ static int smi_num; /* Used to sequence #define DEFAULT_REGSPACING 1 #define DEFAULT_REGSIZE 1 +#ifdef CONFIG_ACPI +static bool si_tryacpi = 1; +#endif +#ifdef CONFIG_DMI +static bool si_trydmi = 1; +#endif static bool si_trydefaults = 1; static char *si_type[SI_MAX_PARMS]; #define MAX_SI_TYPE_STR 30 @@ -1238,6 +1244,16 @@ MODULE_PARM_DESC(hotmod, "Add and remove " Documentation/IPMI.txt in the kernel sources for the" " gory details."); +#ifdef CONFIG_ACPI +module_param_named(tryacpi, si_tryacpi, bool, 0); +MODULE_PARM_DESC(tryacpi, "Setting this to zero will disable the" + " default scan of the interfaces identified via ACPI"); +#endif +#ifdef CONFIG_DMI +module_param_named(trydmi, si_trydmi, bool, 0); +MODULE_PARM_DESC(trydmi, "Setting this to zero will disable the" + " default scan of the interfaces identified via DMI"); +#endif module_param_named(trydefaults, si_trydefaults, bool, 0); MODULE_PARM_DESC(trydefaults, "Setting this to 'false' will disable the" " default scan of the KCS and SMIC interface at the standard" @@ -3408,16 +3424,20 @@ static int init_ipmi_si(void) #endif #ifdef CONFIG_ACPI - pnp_register_driver(&ipmi_pnp_driver); - pnp_registered = 1; + if (si_tryacpi) { + pnp_register_driver(&ipmi_pnp_driver); + pnp_registered = 1; + } #endif #ifdef CONFIG_DMI - dmi_find_bmc(); + if (si_trydmi) + dmi_find_bmc(); #endif #ifdef CONFIG_ACPI - spmi_find_bmc(); + if (si_tryacpi) + spmi_find_bmc(); #endif /* We prefer devices with interrupts, but in the case of a machine _ Patches currently in -mm which might be from cminyard@xxxxxxxxxx are ipmi-remove-superfluous-kernel-userspace-explanation.patch ipmi-add-new-kernel-options-to-prevent-automatic-ipmi-init.patch ipmi-add-options-to-disable-openfirmware-and-pci-scanning.patch -- To unsubscribe from this list: send the line "unsubscribe mm-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html