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authorCorey Minyard <cminyard@mvista.com>2019-02-22 02:21:50 +0300
committerCorey Minyard <cminyard@mvista.com>2019-02-22 16:12:41 +0300
commitbdb57b7bc16252599cbcb826dfdf7e394dd2af4b (patch)
tree377900c887e5721b13705fa01ae16276be248a31 /drivers/char/ipmi
parent1a84df2df8ebb1083cb57be6808fbf36d9cabe0e (diff)
downloadlinux-bdb57b7bc16252599cbcb826dfdf7e394dd2af4b.tar.xz
ipmi_si: Remove hotmod devices on removal and exit
When a hotmod-added device is removed or when the module is removed, remove the platform devices that was created for it. Signed-off-by: Corey Minyard <cminyard@mvista.com>
Diffstat (limited to 'drivers/char/ipmi')
-rw-r--r--drivers/char/ipmi/ipmi_si.h5
-rw-r--r--drivers/char/ipmi/ipmi_si_hotmod.c32
-rw-r--r--drivers/char/ipmi/ipmi_si_intf.c12
3 files changed, 43 insertions, 6 deletions
diff --git a/drivers/char/ipmi/ipmi_si.h b/drivers/char/ipmi/ipmi_si.h
index 49b211bf9ad7..2ae9ebdfab0d 100644
--- a/drivers/char/ipmi/ipmi_si.h
+++ b/drivers/char/ipmi/ipmi_si.h
@@ -21,10 +21,11 @@ void ipmi_irq_start_cleanup(struct si_sm_io *io);
int ipmi_std_irq_setup(struct si_sm_io *io);
void ipmi_irq_finish_setup(struct si_sm_io *io);
int ipmi_si_remove_by_dev(struct device *dev);
-void ipmi_si_remove_by_data(int addr_space, enum si_type si_type,
- unsigned long addr);
+struct device *ipmi_si_remove_by_data(int addr_space, enum si_type si_type,
+ unsigned long addr);
void ipmi_hardcode_init(void);
void ipmi_si_hardcode_exit(void);
+void ipmi_si_hotmod_exit(void);
int ipmi_si_hardcode_match(int addr_space, unsigned long addr);
void ipmi_si_platform_init(void);
void ipmi_si_platform_shutdown(void);
diff --git a/drivers/char/ipmi/ipmi_si_hotmod.c b/drivers/char/ipmi/ipmi_si_hotmod.c
index f0728be00bd2..230b10e7d288 100644
--- a/drivers/char/ipmi/ipmi_si_hotmod.c
+++ b/drivers/char/ipmi/ipmi_si_hotmod.c
@@ -219,7 +219,18 @@ static int hotmod_handler(const char *val, const struct kernel_param *kp)
atomic_inc_return(&hotmod_nr),
&h);
} else {
- ipmi_si_remove_by_data(h.space, h.type, h.addr);
+ struct device *dev;
+
+ dev = ipmi_si_remove_by_data(h.space, h.type, h.addr);
+ if (dev && dev_is_platform(dev)) {
+ struct platform_device *pdev;
+
+ pdev = to_platform_device(dev);
+ if (strcmp(pdev->name, "hotmod-ipmi-si") == 0)
+ platform_device_unregister(pdev);
+ }
+ if (dev)
+ put_device(dev);
}
}
rv = len;
@@ -227,3 +238,22 @@ out:
kfree(str);
return rv;
}
+
+static int pdev_match_name(struct device *dev, void *data)
+{
+ struct platform_device *pdev = to_platform_device(dev);
+
+ return strcmp(pdev->name, "hotmod-ipmi-si") == 0;
+}
+
+void ipmi_si_hotmod_exit(void)
+{
+ struct device *dev;
+
+ while ((dev = bus_find_device(&platform_bus_type, NULL, NULL,
+ pdev_match_name))) {
+ struct platform_device *pdev = to_platform_device(dev);
+
+ platform_device_unregister(pdev);
+ }
+}
diff --git a/drivers/char/ipmi/ipmi_si_intf.c b/drivers/char/ipmi/ipmi_si_intf.c
index c8af06dfa244..9b3a272af7dd 100644
--- a/drivers/char/ipmi/ipmi_si_intf.c
+++ b/drivers/char/ipmi/ipmi_si_intf.c
@@ -2281,11 +2281,12 @@ int ipmi_si_remove_by_dev(struct device *dev)
return rv;
}
-void ipmi_si_remove_by_data(int addr_space, enum si_type si_type,
- unsigned long addr)
+struct device *ipmi_si_remove_by_data(int addr_space, enum si_type si_type,
+ unsigned long addr)
{
/* remove */
struct smi_info *e, *tmp_e;
+ struct device *dev = NULL;
mutex_lock(&smi_infos_lock);
list_for_each_entry_safe(e, tmp_e, &smi_infos, link) {
@@ -2293,10 +2294,14 @@ void ipmi_si_remove_by_data(int addr_space, enum si_type si_type,
continue;
if (e->io.si_type != si_type)
continue;
- if (e->io.addr_data == addr)
+ if (e->io.addr_data == addr) {
+ dev = get_device(e->io.dev);
cleanup_one_si(e);
+ }
}
mutex_unlock(&smi_infos_lock);
+
+ return dev;
}
static void cleanup_ipmi_si(void)
@@ -2318,6 +2323,7 @@ static void cleanup_ipmi_si(void)
mutex_unlock(&smi_infos_lock);
ipmi_si_hardcode_exit();
+ ipmi_si_hotmod_exit();
}
module_exit(cleanup_ipmi_si);