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-rw-r--r--drivers/char/i8k.c149
-rw-r--r--drivers/char/misc.c4
2 files changed, 47 insertions, 106 deletions
diff --git a/drivers/char/i8k.c b/drivers/char/i8k.c
index 1599456..584e9a4 100644
--- a/drivers/char/i8k.c
+++ b/drivers/char/i8k.c
@@ -87,14 +87,14 @@ static struct file_operations i8k_fops = {
.ioctl = i8k_ioctl,
};
-typedef struct {
+struct smm_regs {
unsigned int eax;
unsigned int ebx __attribute__ ((packed));
unsigned int ecx __attribute__ ((packed));
unsigned int edx __attribute__ ((packed));
unsigned int esi __attribute__ ((packed));
unsigned int edi __attribute__ ((packed));
-} SMMRegisters;
+};
static inline char *i8k_get_dmi_data(int field)
{
@@ -104,7 +104,7 @@ static inline char *i8k_get_dmi_data(int field)
/*
* Call the System Management Mode BIOS. Code provided by Jonathan Buzzard.
*/
-static int i8k_smm(SMMRegisters * regs)
+static int i8k_smm(struct smm_regs *regs)
{
int rc;
int eax = regs->eax;
@@ -134,9 +134,8 @@ static int i8k_smm(SMMRegisters * regs)
: "a"(regs)
: "%ebx", "%ecx", "%edx", "%esi", "%edi", "memory");
- if ((rc != 0) || ((regs->eax & 0xffff) == 0xffff) || (regs->eax == eax)) {
+ if (rc != 0 || (regs->eax & 0xffff) == 0xffff || regs->eax == eax)
return -EINVAL;
- }
return 0;
}
@@ -147,15 +146,9 @@ static int i8k_smm(SMMRegisters * regs)
*/
static int i8k_get_bios_version(void)
{
- SMMRegisters regs = { 0, 0, 0, 0, 0, 0 };
- int rc;
-
- regs.eax = I8K_SMM_BIOS_VERSION;
- if ((rc = i8k_smm(&regs)) < 0) {
- return rc;
- }
+ struct smm_regs regs = { .eax = I8K_SMM_BIOS_VERSION, };
- return regs.eax;
+ return i8k_smm(&regs) ? : regs.eax;
}
/*
@@ -163,13 +156,11 @@ static int i8k_get_bios_version(void)
*/
static int i8k_get_fn_status(void)
{
- SMMRegisters regs = { 0, 0, 0, 0, 0, 0 };
+ struct smm_regs regs = { .eax = I8K_SMM_FN_STATUS, };
int rc;
- regs.eax = I8K_SMM_FN_STATUS;
- if ((rc = i8k_smm(&regs)) < 0) {
+ if ((rc = i8k_smm(&regs)) < 0)
return rc;
- }
switch ((regs.eax >> I8K_FN_SHIFT) & I8K_FN_MASK) {
case I8K_FN_UP:
@@ -188,20 +179,13 @@ static int i8k_get_fn_status(void)
*/
static int i8k_get_power_status(void)
{
- SMMRegisters regs = { 0, 0, 0, 0, 0, 0 };
+ struct smm_regs regs = { .eax = I8K_SMM_POWER_STATUS, };
int rc;
- regs.eax = I8K_SMM_POWER_STATUS;
- if ((rc = i8k_smm(&regs)) < 0) {
+ if ((rc = i8k_smm(&regs)) < 0)
return rc;
- }
- switch (regs.eax & 0xff) {
- case I8K_POWER_AC:
- return I8K_AC;
- default:
- return I8K_BATTERY;
- }
+ return (regs.eax & 0xff) == I8K_POWER_AC ? I8K_AC : I8K_BATTERY;
}
/*
@@ -209,16 +193,10 @@ static int i8k_get_power_status(void)
*/
static int i8k_get_fan_status(int fan)
{
- SMMRegisters regs = { 0, 0, 0, 0, 0, 0 };
- int rc;
+ struct smm_regs regs = { .eax = I8K_SMM_GET_FAN, };
- regs.eax = I8K_SMM_GET_FAN;
regs.ebx = fan & 0xff;
- if ((rc = i8k_smm(&regs)) < 0) {
- return rc;
- }
-
- return (regs.eax & 0xff);
+ return i8k_smm(&regs) ? : regs.eax & 0xff;
}
/*
@@ -226,16 +204,10 @@ static int i8k_get_fan_status(int fan)
*/
static int i8k_get_fan_speed(int fan)
{
- SMMRegisters regs = { 0, 0, 0, 0, 0, 0 };
- int rc;
+ struct smm_regs regs = { .eax = I8K_SMM_GET_SPEED, };
- regs.eax = I8K_SMM_GET_SPEED;
regs.ebx = fan & 0xff;
- if ((rc = i8k_smm(&regs)) < 0) {
- return rc;
- }
-
- return (regs.eax & 0xffff) * I8K_FAN_MULT;
+ return i8k_smm(&regs) ? : (regs.eax & 0xffff) * I8K_FAN_MULT;
}
/*
@@ -243,18 +215,12 @@ static int i8k_get_fan_speed(int fan)
*/
static int i8k_set_fan(int fan, int speed)
{
- SMMRegisters regs = { 0, 0, 0, 0, 0, 0 };
- int rc;
+ struct smm_regs regs = { .eax = I8K_SMM_SET_FAN, };
speed = (speed < 0) ? 0 : ((speed > I8K_FAN_MAX) ? I8K_FAN_MAX : speed);
-
- regs.eax = I8K_SMM_SET_FAN;
regs.ebx = (fan & 0xff) | (speed << 8);
- if ((rc = i8k_smm(&regs)) < 0) {
- return rc;
- }
- return (i8k_get_fan_status(fan));
+ return i8k_smm(&regs) ? : i8k_get_fan_status(fan);
}
/*
@@ -262,18 +228,17 @@ static int i8k_set_fan(int fan, int speed)
*/
static int i8k_get_cpu_temp(void)
{
- SMMRegisters regs = { 0, 0, 0, 0, 0, 0 };
+ struct smm_regs regs = { .eax = I8K_SMM_GET_TEMP, };
int rc;
int temp;
#ifdef I8K_TEMPERATURE_BUG
- static int prev = 0;
+ static int prev;
#endif
- regs.eax = I8K_SMM_GET_TEMP;
- if ((rc = i8k_smm(&regs)) < 0) {
+ if ((rc = i8k_smm(&regs)) < 0)
return rc;
- }
+
temp = regs.eax & 0xff;
#ifdef I8K_TEMPERATURE_BUG
@@ -297,19 +262,13 @@ static int i8k_get_cpu_temp(void)
static int i8k_get_dell_signature(void)
{
- SMMRegisters regs = { 0, 0, 0, 0, 0, 0 };
+ struct smm_regs regs = { .eax = I8K_SMM_GET_DELL_SIG, };
int rc;
- regs.eax = I8K_SMM_GET_DELL_SIG;
- if ((rc = i8k_smm(&regs)) < 0) {
+ if ((rc = i8k_smm(&regs)) < 0)
return rc;
- }
- if ((regs.eax == 1145651527) && (regs.edx == 1145392204)) {
- return 0;
- } else {
- return -1;
- }
+ return regs.eax == 1145651527 && regs.edx == 1145392204 ? 0 : -1;
}
static int i8k_ioctl(struct inode *ip, struct file *fp, unsigned int cmd,
@@ -346,29 +305,29 @@ static int i8k_ioctl(struct inode *ip, struct file *fp, unsigned int cmd,
break;
case I8K_GET_SPEED:
- if (copy_from_user(&val, argp, sizeof(int))) {
+ if (copy_from_user(&val, argp, sizeof(int)))
return -EFAULT;
- }
+
val = i8k_get_fan_speed(val);
break;
case I8K_GET_FAN:
- if (copy_from_user(&val, argp, sizeof(int))) {
+ if (copy_from_user(&val, argp, sizeof(int)))
return -EFAULT;
- }
+
val = i8k_get_fan_status(val);
break;
case I8K_SET_FAN:
- if (restricted && !capable(CAP_SYS_ADMIN)) {
+ if (restricted && !capable(CAP_SYS_ADMIN))
return -EPERM;
- }
- if (copy_from_user(&val, argp, sizeof(int))) {
+
+ if (copy_from_user(&val, argp, sizeof(int)))
return -EFAULT;
- }
- if (copy_from_user(&speed, argp + 1, sizeof(int))) {
+
+ if (copy_from_user(&speed, argp + 1, sizeof(int)))
return -EFAULT;
- }
+
val = i8k_set_fan(val, speed);
break;
@@ -376,25 +335,24 @@ static int i8k_ioctl(struct inode *ip, struct file *fp, unsigned int cmd,
return -EINVAL;
}
- if (val < 0) {
+ if (val < 0)
return val;
- }
switch (cmd) {
case I8K_BIOS_VERSION:
- if (copy_to_user(argp, &val, 4)) {
+ if (copy_to_user(argp, &val, 4))
return -EFAULT;
- }
+
break;
case I8K_MACHINE_ID:
- if (copy_to_user(argp, buff, 16)) {
+ if (copy_to_user(argp, buff, 16))
return -EFAULT;
- }
+
break;
default:
- if (copy_to_user(argp, &val, sizeof(int))) {
+ if (copy_to_user(argp, &val, sizeof(int)))
return -EFAULT;
- }
+
break;
}
@@ -415,11 +373,10 @@ static int i8k_proc_show(struct seq_file *seq, void *offset)
left_speed = i8k_get_fan_speed(I8K_FAN_LEFT); /* 580 µs */
right_speed = i8k_get_fan_speed(I8K_FAN_RIGHT); /* 580 µs */
fn_key = i8k_get_fn_status(); /* 750 µs */
- if (power_status) {
+ if (power_status)
ac_power = i8k_get_power_status(); /* 14700 µs */
- } else {
+ else
ac_power = -1;
- }
/*
* Info:
@@ -528,10 +485,7 @@ static int __init i8k_probe(void)
return 0;
}
-#ifdef MODULE
-static
-#endif
-int __init i8k_init(void)
+static int __init i8k_init(void)
{
struct proc_dir_entry *proc_i8k;
@@ -554,19 +508,10 @@ int __init i8k_init(void)
return 0;
}
-#ifdef MODULE
-int init_module(void)
+static void __exit i8k_exit(void)
{
- return i8k_init();
-}
-
-void cleanup_module(void)
-{
- /* Remove the proc entry */
remove_proc_entry("i8k", NULL);
-
- printk(KERN_INFO "i8k: module unloaded\n");
}
-#endif
-/* end of file */
+module_init(i8k_init);
+module_exit(i8k_exit);
diff --git a/drivers/char/misc.c b/drivers/char/misc.c
index f7e838e..31cf84d 100644
--- a/drivers/char/misc.c
+++ b/drivers/char/misc.c
@@ -66,7 +66,6 @@ static unsigned char misc_minors[DYNAMIC_MINORS / 8];
extern int rtc_DP8570A_init(void);
extern int rtc_MK48T08_init(void);
extern int pmu_device_init(void);
-extern int i8k_init(void);
#ifdef CONFIG_PROC_FS
static void *misc_seq_start(struct seq_file *seq, loff_t *pos)
@@ -313,9 +312,6 @@ static int __init misc_init(void)
#ifdef CONFIG_PMAC_PBOOK
pmu_device_init();
#endif
-#ifdef CONFIG_I8K
- i8k_init();
-#endif
if (register_chrdev(MISC_MAJOR,"misc",&misc_fops)) {
printk("unable to get major %d for misc devices\n",
MISC_MAJOR);
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