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ipmi: Prefer ACPI system interfaces over SMBIOS ones

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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 <cminyard@mvista.com>
This commit is contained in:
Corey Minyard 2017-09-08 14:05:58 -05:00
parent 9ca15af316
commit 7e030d6dff
1 changed files with 23 additions and 10 deletions
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33
drivers/char/ipmi/ipmi_si_intf.c
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@ -3425,7 +3425,7 @@ 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;
@ -3440,24 +3440,36 @@ 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",
@ -3866,7 +3878,8 @@ 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);