From: Corey Minyard <cminy...@mvista.com>
The recent changes to add SMBIOS (DMI) IPMI interfaces as platform
devices caused DMI to be selected before ACPI, causing ACPI type
of operations to not work.
Signed-off-by: Corey Minyard <cminy...@mvista.com>
---
drivers/char/ipmi/ipmi_si_intf.c | 33 +++++++++++++++++++++++----------
1 file changed, 23 insertions(+), 10 deletions(-)
diff --git a/drivers/char/ipmi/ipmi_si_intf.c b/drivers/char/ipmi/ipmi_si_intf.c
index 1c2ff8e..3a76934 100644
--- a/drivers/char/ipmi/ipmi_si_intf.c
+++ b/drivers/char/ipmi/ipmi_si_intf.c
@@ -3423,7 +3423,7 @@ static inline void wait_for_timer_and_thread(struct
smi_info *smi_info)
del_timer_sync(&smi_info->si_timer);
}
-static int is_new_interface(struct smi_info *info)
+static struct smi_info *find_dup_si(struct smi_info *info)
{
struct smi_info *e;
@@ -3438,24 +3438,36 @@ static int is_new_interface(struct smi_info *info)
*/
if (info->slave_addr && !e->slave_addr)
e->slave_addr = info->slave_addr;
- return 0;
+ return e;
}
}
- return 1;
+ return NULL;
}
static int add_smi(struct smi_info *new_smi)
{
int rv = 0;
+ struct smi_info *dup;
mutex_lock(&smi_infos_lock);
- if (!is_new_interface(new_smi)) {
- pr_info(PFX "%s-specified %s state machine: duplicate\n",
- ipmi_addr_src_to_str(new_smi->addr_source),
- si_to_str[new_smi->si_type]);
- rv = -EBUSY;
- goto out_err;
+ dup = find_dup_si(new_smi);
+ if (dup) {
+ if (new_smi->addr_source == SI_ACPI &&
+ dup->addr_source == SI_SMBIOS) {
+ /* We prefer ACPI over SMBIOS. */
+ dev_info(dup->dev,
+ "Removing SMBIOS-specified %s state machine in
favor of ACPI\n",
+ si_to_str[new_smi->si_type]);
+ cleanup_one_si(dup);
+ } else {
+ dev_info(new_smi->dev,
+ "%s-specified %s state machine: duplicate\n",
+ ipmi_addr_src_to_str(new_smi->addr_source),
+ si_to_str[new_smi->si_type]);
+ rv = -EBUSY;
+ goto out_err;
+ }
}
pr_info(PFX "Adding %s-specified %s state machine\n",
@@ -3864,7 +3876,8 @@ static void cleanup_one_si(struct smi_info *to_clean)
poll(to_clean);
schedule_timeout_uninterruptible(1);
}
- disable_si_irq(to_clean, false);
+ if (to_clean->handlers)
+ disable_si_irq(to_clean, false);
while (to_clean->curr_msg || (to_clean->si_state != SI_NORMAL)) {
poll(to_clean);
schedule_timeout_uninterruptible(1);
--
2.7.4
------------------------------------------------------------------------------
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