#include <linux/spinlock.h>
#include <linux/string.h>
#include <linux/types.h>
+#include <linux/mutex.h>
#include <asm/io.h>
#include <asm/semaphore.h>
static dma_addr_t smi_data_buf_handle;
static unsigned long smi_data_buf_size;
static u32 smi_data_buf_phys_addr;
-static DECLARE_MUTEX(smi_data_lock);
+static DEFINE_MUTEX(smi_data_lock);
static unsigned int host_control_action;
static unsigned int host_control_smi_type;
buf_size = simple_strtoul(buf, NULL, 10);
/* make sure SMI data buffer is at least buf_size */
- down(&smi_data_lock);
+ mutex_lock(&smi_data_lock);
ret = smi_data_buf_realloc(buf_size);
- up(&smi_data_lock);
+ mutex_unlock(&smi_data_lock);
if (ret)
return ret;
size_t max_read;
ssize_t ret;
- down(&smi_data_lock);
+ mutex_lock(&smi_data_lock);
if (pos >= smi_data_buf_size) {
ret = 0;
ret = min(max_read, count);
memcpy(buf, smi_data_buf + pos, ret);
out:
- up(&smi_data_lock);
+ mutex_unlock(&smi_data_lock);
return ret;
}
{
ssize_t ret;
- down(&smi_data_lock);
+ mutex_lock(&smi_data_lock);
ret = smi_data_buf_realloc(pos + count);
if (ret)
memcpy(smi_data_buf + pos, buf, count);
ret = count;
out:
- up(&smi_data_lock);
+ mutex_unlock(&smi_data_lock);
return ret;
}
ssize_t ret;
/* make sure buffer is available for host control command */
- down(&smi_data_lock);
+ mutex_lock(&smi_data_lock);
ret = smi_data_buf_realloc(sizeof(struct apm_cmd));
- up(&smi_data_lock);
+ mutex_unlock(&smi_data_lock);
if (ret)
return ret;
unsigned long val = simple_strtoul(buf, NULL, 10);
ssize_t ret;
- down(&smi_data_lock);
+ mutex_lock(&smi_data_lock);
if (smi_data_buf_size < sizeof(struct smi_cmd)) {
ret = -ENODEV;
}
out:
- up(&smi_data_lock);
+ mutex_unlock(&smi_data_lock);
return ret;
}
static int dcdbas_reboot_notify(struct notifier_block *nb, unsigned long code,
void *unused)
{
- static unsigned int notify_cnt = 0;
-
switch (code) {
case SYS_DOWN:
case SYS_HALT:
case SYS_POWER_OFF:
if (host_control_on_shutdown) {
/* firmware is going to perform host control action */
- if (++notify_cnt == 2) {
- printk(KERN_WARNING
- "Please wait for shutdown "
- "action to complete...\n");
- dcdbas_host_control();
- }
- /*
- * register again and initiate the host control
- * action on the second notification to allow
- * everyone that registered to be notified
- */
- register_reboot_notifier(nb);
+ printk(KERN_WARNING "Please wait for shutdown "
+ "action to complete...\n");
+ dcdbas_host_control();
}
break;
}
static struct notifier_block dcdbas_reboot_nb = {
.notifier_call = dcdbas_reboot_notify,
.next = NULL,
- .priority = 0
+ .priority = INT_MIN
};
static DCDBAS_BIN_ATTR_RW(smi_data);