toshiba_acpi: Change HCI/SCI functions return code type

Currently the HCI/SCI read/write functions are returning
the status of the ACPI call and also assigning the
returned value of the HCI/SCI function, however, only
the HCI/SCI status is being checked.

This patch changes such functions, returning the value
of the HCI/SCI function instead of the ACPI call status,
eliminating one parameter, and returning something
useful that indeed is being checked.

Signed-off-by: Azael Avalos <coproscefalo@gmail.com>
Signed-off-by: Darren Hart <dvhart@linux.intel.com>

1 files changed, 62 insertions, 67 deletions

diff --git a/drivers/platform/x86/toshiba_acpi.c b/drivers/platform/x86/toshiba_acpi.c
index 589a85836c1a..5d509eac8ce6 100644
--- a/drivers/platform/x86/toshiba_acpi.c
+++ b/drivers/platform/x86/toshiba_acpi.c
@@ -317,47 +317,49 @@ static acpi_status tci_raw(struct toshiba_acpi_dev *dev,
  * may be useful (such as "not supported").
  */
 
-static acpi_status hci_write1(struct toshiba_acpi_dev *dev, u32 reg,
-                              u32 in1, u32 *result)
+static u32 hci_write1(struct toshiba_acpi_dev *dev, u32 reg, u32 in1)
 {
         u32 in[TCI_WORDS] = { HCI_SET, reg, in1, 0, 0, 0 };
         u32 out[TCI_WORDS];
         acpi_status status = tci_raw(dev, in, out);
-        *result = (status == AE_OK) ? out[0] : TOS_FAILURE;
-        return status;
+
+        return ACPI_SUCCESS(status) ? out[0] : TOS_FAILURE;
 }
 
-static acpi_status hci_read1(struct toshiba_acpi_dev *dev, u32 reg,
-                             u32 *out1, u32 *result)
+static u32 hci_read1(struct toshiba_acpi_dev *dev, u32 reg, u32 *out1)
 {
         u32 in[TCI_WORDS] = { HCI_GET, reg, 0, 0, 0, 0 };
         u32 out[TCI_WORDS];
         acpi_status status = tci_raw(dev, in, out);
+        if (ACPI_FAILURE(status))
+                return TOS_FAILURE;
+
         *out1 = out[2];
-        *result = (status == AE_OK) ? out[0] : TOS_FAILURE;
-        return status;
+
+        return out[0];
 }
 
-static acpi_status hci_write2(struct toshiba_acpi_dev *dev, u32 reg,
-                              u32 in1, u32 in2, u32 *result)
+static u32 hci_write2(struct toshiba_acpi_dev *dev, u32 reg, u32 in1, u32 in2)
 {
         u32 in[TCI_WORDS] = { HCI_SET, reg, in1, in2, 0, 0 };
         u32 out[TCI_WORDS];
         acpi_status status = tci_raw(dev, in, out);
-        *result = (status == AE_OK) ? out[0] : TOS_FAILURE;
-        return status;
+
+        return ACPI_SUCCESS(status) ? out[0] : TOS_FAILURE;
 }
 
-static acpi_status hci_read2(struct toshiba_acpi_dev *dev, u32 reg,
-                             u32 *out1, u32 *out2, u32 *result)
+static u32 hci_read2(struct toshiba_acpi_dev *dev, u32 reg, u32 *out1, u32 *out2)
 {
         u32 in[TCI_WORDS] = { HCI_GET, reg, *out1, *out2, 0, 0 };
         u32 out[TCI_WORDS];
         acpi_status status = tci_raw(dev, in, out);
+        if (ACPI_FAILURE(status))
+                return TOS_FAILURE;
+
         *out1 = out[2];
         *out2 = out[3];
-        *result = (status == AE_OK) ? out[0] : TOS_FAILURE;
-        return status;
+
+        return out[0];
 }
 
 /* common sci tasks
@@ -407,25 +409,26 @@ static void sci_close(struct toshiba_acpi_dev *dev)
                 pr_info("Toshiba SCI is not present\n");
 }
 
-static acpi_status sci_read(struct toshiba_acpi_dev *dev, u32 reg,
-                            u32 *out1, u32 *result)
+static u32 sci_read(struct toshiba_acpi_dev *dev, u32 reg, u32 *out1)
 {
         u32 in[TCI_WORDS] = { SCI_GET, reg, 0, 0, 0, 0 };
         u32 out[TCI_WORDS];
         acpi_status status = tci_raw(dev, in, out);
+        if (ACPI_FAILURE(status))
+                return TOS_FAILURE;
+
         *out1 = out[2];
-        *result = (ACPI_SUCCESS(status)) ? out[0] : TOS_FAILURE;
-        return status;
+
+        return out[0];
 }
 
-static acpi_status sci_write(struct toshiba_acpi_dev *dev, u32 reg,
-                             u32 in1, u32 *result)
+static u32 sci_write(struct toshiba_acpi_dev *dev, u32 reg, u32 in1)
 {
         u32 in[TCI_WORDS] = { SCI_SET, reg, in1, 0, 0, 0 };
         u32 out[TCI_WORDS];
         acpi_status status = tci_raw(dev, in, out);
-        *result = (ACPI_SUCCESS(status)) ? out[0] : TOS_FAILURE;
-        return status;
+
+        return ACPI_SUCCESS(status) ? out[0] : TOS_FAILURE;
 }
 
 /* Illumination support */
@@ -457,7 +460,6 @@ static void toshiba_illumination_set(struct led_classdev *cdev,
         struct toshiba_acpi_dev *dev = container_of(cdev,
                         struct toshiba_acpi_dev, led_dev);
         u32 state, result;
-        acpi_status status;
 
         /* First request : initialize communication. */
         if (!sci_open(dev))
@@ -465,9 +467,9 @@ static void toshiba_illumination_set(struct led_classdev *cdev,
 
         /* Switch the illumination on/off */
         state = brightness ? 1 : 0;
-        status = sci_write(dev, SCI_ILLUMINATION, state, &result);
+        result = sci_write(dev, SCI_ILLUMINATION, state);
         sci_close(dev);
-        if (ACPI_FAILURE(status)) {
+        if (result == TOS_FAILURE) {
                 pr_err("ACPI call for illumination failed\n");
                 return;
         } else if (result == TOS_NOT_SUPPORTED) {
@@ -481,16 +483,15 @@ static enum led_brightness toshiba_illumination_get(struct led_classdev *cdev)
         struct toshiba_acpi_dev *dev = container_of(cdev,
                         struct toshiba_acpi_dev, led_dev);
         u32 state, result;
-        acpi_status status;
 
         /* First request : initialize communication. */
         if (!sci_open(dev))
                 return LED_OFF;
 
         /* Check the illumination */
-        status = sci_read(dev, SCI_ILLUMINATION, &state, &result);
+        result = sci_read(dev, SCI_ILLUMINATION, &state);
         sci_close(dev);
-        if (ACPI_FAILURE(status) || result == TOS_INPUT_DATA_ERROR) {
+        if (result == TOS_FAILURE || result == TOS_INPUT_DATA_ERROR) {
                 pr_err("ACPI call for illumination failed\n");
                 return LED_OFF;
         } else if (result == TOS_NOT_SUPPORTED) {
@@ -541,14 +542,13 @@ static int toshiba_kbd_illum_available(struct toshiba_acpi_dev *dev)
 static int toshiba_kbd_illum_status_set(struct toshiba_acpi_dev *dev, u32 time)
 {
         u32 result;
-        acpi_status status;
 
         if (!sci_open(dev))
                 return -EIO;
 
-        status = sci_write(dev, SCI_KBD_ILLUM_STATUS, time, &result);
+        result = sci_write(dev, SCI_KBD_ILLUM_STATUS, time);
         sci_close(dev);
-        if (ACPI_FAILURE(status) || result == TOS_INPUT_DATA_ERROR) {
+        if (result == TOS_FAILURE || result == TOS_INPUT_DATA_ERROR) {
                 pr_err("ACPI call to set KBD backlight status failed\n");
                 return -EIO;
         } else if (result == TOS_NOT_SUPPORTED) {
@@ -562,14 +562,13 @@ static int toshiba_kbd_illum_status_set(struct toshiba_acpi_dev *dev, u32 time)
 static int toshiba_kbd_illum_status_get(struct toshiba_acpi_dev *dev, u32 *time)
 {
         u32 result;
-        acpi_status status;
 
         if (!sci_open(dev))
                 return -EIO;
 
-        status = sci_read(dev, SCI_KBD_ILLUM_STATUS, time, &result);
+        result = sci_read(dev, SCI_KBD_ILLUM_STATUS, time);
         sci_close(dev);
-        if (ACPI_FAILURE(status) || result == TOS_INPUT_DATA_ERROR) {
+        if (result == TOS_FAILURE || result == TOS_INPUT_DATA_ERROR) {
                 pr_err("ACPI call to get KBD backlight status failed\n");
                 return -EIO;
         } else if (result == TOS_NOT_SUPPORTED) {
@@ -585,11 +584,10 @@ static enum led_brightness toshiba_kbd_backlight_get(struct led_classdev *cdev)
         struct toshiba_acpi_dev *dev = container_of(cdev,
                         struct toshiba_acpi_dev, kbd_led);
         u32 state, result;
-        acpi_status status;
 
         /* Check the keyboard backlight state */
-        status = hci_read1(dev, HCI_KBD_ILLUMINATION, &state, &result);
-        if (ACPI_FAILURE(status) || result == TOS_INPUT_DATA_ERROR) {
+        result = hci_read1(dev, HCI_KBD_ILLUMINATION, &state);
+        if (result == TOS_FAILURE || result == TOS_INPUT_DATA_ERROR) {
                 pr_err("ACPI call to get the keyboard backlight failed\n");
                 return LED_OFF;
         } else if (result == TOS_NOT_SUPPORTED) {
@@ -606,12 +604,11 @@ static void toshiba_kbd_backlight_set(struct led_classdev *cdev,
         struct toshiba_acpi_dev *dev = container_of(cdev,
                         struct toshiba_acpi_dev, kbd_led);
         u32 state, result;
-        acpi_status status;
 
         /* Set the keyboard backlight state */
         state = brightness ? 1 : 0;
-        status = hci_write1(dev, HCI_KBD_ILLUMINATION, state, &result);
-        if (ACPI_FAILURE(status) || result == TOS_INPUT_DATA_ERROR) {
+        result = hci_write1(dev, HCI_KBD_ILLUMINATION, state);
+        if (result == TOS_FAILURE || result == TOS_INPUT_DATA_ERROR) {
                 pr_err("ACPI call to set KBD Illumination mode failed\n");
                 return;
         } else if (result == TOS_NOT_SUPPORTED) {
@@ -624,14 +621,13 @@ static void toshiba_kbd_backlight_set(struct led_classdev *cdev,
 static int toshiba_touchpad_set(struct toshiba_acpi_dev *dev, u32 state)
 {
         u32 result;
-        acpi_status status;
 
         if (!sci_open(dev))
                 return -EIO;
 
-        status = sci_write(dev, SCI_TOUCHPAD, state, &result);
+        result = sci_write(dev, SCI_TOUCHPAD, state);
         sci_close(dev);
-        if (ACPI_FAILURE(status)) {
+        if (result == TOS_FAILURE) {
                 pr_err("ACPI call to set the touchpad failed\n");
                 return -EIO;
         } else if (result == TOS_NOT_SUPPORTED) {
@@ -644,14 +640,13 @@ static int toshiba_touchpad_set(struct toshiba_acpi_dev *dev, u32 state)
 static int toshiba_touchpad_get(struct toshiba_acpi_dev *dev, u32 *state)
 {
         u32 result;
-        acpi_status status;
 
         if (!sci_open(dev))
                 return -EIO;
 
-        status = sci_read(dev, SCI_TOUCHPAD, state, &result);
+        result = sci_read(dev, SCI_TOUCHPAD, state);
         sci_close(dev);
-        if (ACPI_FAILURE(status)) {
+        if (result == TOS_FAILURE) {
                 pr_err("ACPI call to query the touchpad failed\n");
                 return -EIO;
         } else if (result == TOS_NOT_SUPPORTED) {
@@ -767,7 +762,7 @@ static u32 hci_get_bt_present(struct toshiba_acpi_dev *dev, bool *present)
 
         value = 0;
         value2 = 0;
-        hci_read2(dev, HCI_WIRELESS, &value, &value2, &hci_result);
+        hci_result = hci_read2(dev, HCI_WIRELESS, &value, &value2);
         if (hci_result == TOS_SUCCESS)
                 *present = (value & HCI_WIRELESS_BT_PRESENT) ? true : false;
 
@@ -781,7 +776,7 @@ static u32 hci_get_radio_state(struct toshiba_acpi_dev *dev, bool *radio_state)
 
         value = 0;
         value2 = 0x0001;
-        hci_read2(dev, HCI_WIRELESS, &value, &value2, &hci_result);
+        hci_result = hci_read2(dev, HCI_WIRELESS, &value, &value2);
 
         *radio_state = value & HCI_WIRELESS_KILL_SWITCH;
         return hci_result;
@@ -808,8 +803,8 @@ static int bt_rfkill_set_block(void *data, bool blocked)
                 goto out;
         }
 
-        hci_write2(dev, HCI_WIRELESS, value, HCI_WIRELESS_BT_POWER, &result1);
-        hci_write2(dev, HCI_WIRELESS, value, HCI_WIRELESS_BT_ATTACH, &result2);
+        result1 = hci_write2(dev, HCI_WIRELESS, value, HCI_WIRELESS_BT_POWER);
+        result2 = hci_write2(dev, HCI_WIRELESS, value, HCI_WIRELESS_BT_ATTACH);
 
         if (result1 != TOS_SUCCESS || result2 != TOS_SUCCESS)
                 err = -EIO;
@@ -854,7 +849,7 @@ static int get_tr_backlight_status(struct toshiba_acpi_dev *dev, bool *enabled)
         u32 hci_result;
         u32 status;
 
-        hci_read1(dev, HCI_TR_BACKLIGHT, &status, &hci_result);
+        hci_result = hci_read1(dev, HCI_TR_BACKLIGHT, &status);
         *enabled = !status;
         return hci_result == TOS_SUCCESS ? 0 : -EIO;
 }
@@ -864,7 +859,7 @@ static int set_tr_backlight_status(struct toshiba_acpi_dev *dev, bool enable)
         u32 hci_result;
         u32 value = !enable;
 
-        hci_write1(dev, HCI_TR_BACKLIGHT, value, &hci_result);
+        hci_result = hci_write1(dev, HCI_TR_BACKLIGHT, value);
         return hci_result == TOS_SUCCESS ? 0 : -EIO;
 }
 
@@ -886,7 +881,7 @@ static int __get_lcd_brightness(struct toshiba_acpi_dev *dev)
                 brightness++;
         }
 
-        hci_read1(dev, HCI_LCD_BRIGHTNESS, &value, &hci_result);
+        hci_result = hci_read1(dev, HCI_LCD_BRIGHTNESS, &value);
         if (hci_result == TOS_SUCCESS)
                 return brightness + (value >> HCI_LCD_BRIGHTNESS_SHIFT);
 
@@ -1001,7 +996,7 @@ static int get_video_status(struct toshiba_acpi_dev *dev, u32 *status)
 {
         u32 hci_result;
 
-        hci_read1(dev, HCI_VIDEO_OUT, status, &hci_result);
+        hci_result = hci_read1(dev, HCI_VIDEO_OUT, status);
         return hci_result == TOS_SUCCESS ? 0 : -EIO;
 }
 
@@ -1105,7 +1100,7 @@ static int get_fan_status(struct toshiba_acpi_dev *dev, u32 *status)
 {
         u32 hci_result;
 
-        hci_read1(dev, HCI_FAN, status, &hci_result);
+        hci_result = hci_read1(dev, HCI_FAN, status);
         return hci_result == TOS_SUCCESS ? 0 : -EIO;
 }
 
@@ -1145,7 +1140,7 @@ static ssize_t fan_proc_write(struct file *file, const char __user *buf,
 
         if (sscanf(cmd, " force_on : %i", &value) == 1 &&
             value >= 0 && value <= 1) {
-                hci_write1(dev, HCI_FAN, value, &hci_result);
+                hci_result = hci_write1(dev, HCI_FAN, value);
                 if (hci_result != TOS_SUCCESS)
                         return -EIO;
                 else
@@ -1173,7 +1168,7 @@ static int keys_proc_show(struct seq_file *m, void *v)
         u32 value;
 
         if (!dev->key_event_valid && dev->system_event_supported) {
-                hci_read1(dev, HCI_SYSTEM_EVENT, &value, &hci_result);
+                hci_result = hci_read1(dev, HCI_SYSTEM_EVENT, &value);
                 if (hci_result == TOS_SUCCESS) {
                         dev->key_event_valid = 1;
                         dev->last_key_event = value;
@@ -1183,7 +1178,7 @@ static int keys_proc_show(struct seq_file *m, void *v)
                         /* This is a workaround for an unresolved issue on
                          * some machines where system events sporadically
                          * become disabled. */
-                        hci_write1(dev, HCI_SYSTEM_EVENT, 1, &hci_result);
+                        hci_result = hci_write1(dev, HCI_SYSTEM_EVENT, 1);
                         pr_notice("Re-enabled hotkeys\n");
                 } else {
                         pr_err("Error reading hotkey status\n");
@@ -1677,7 +1672,7 @@ static int toshiba_acpi_setup_keyboard(struct toshiba_acpi_dev *dev)
         if (acpi_has_method(dev->acpi_dev->handle, "INFO"))
                 dev->info_supported = 1;
         else {
-                hci_write1(dev, HCI_SYSTEM_EVENT, 1, &hci_result);
+                hci_result = hci_write1(dev, HCI_SYSTEM_EVENT, 1);
                 if (hci_result == TOS_SUCCESS)
                         dev->system_event_supported = 1;
         }
@@ -1700,7 +1695,7 @@ static int toshiba_acpi_setup_keyboard(struct toshiba_acpi_dev *dev)
                 goto err_remove_filter;
         }
 
-        hci_write1(dev, HCI_HOTKEY_EVENT, HCI_HOTKEY_ENABLE, &hci_result);
+        hci_result = hci_write1(dev, HCI_HOTKEY_EVENT, HCI_HOTKEY_ENABLE);
         return 0;
 
  err_remove_filter:
@@ -1961,7 +1956,7 @@ static void toshiba_acpi_notify(struct acpi_device *acpi_dev, u32 event)
                         toshiba_acpi_report_hotkey(dev, scancode);
         } else if (dev->system_event_supported) {
                 do {
-                        hci_read1(dev, HCI_SYSTEM_EVENT, &value, &hci_result);
+                        hci_result = hci_read1(dev, HCI_SYSTEM_EVENT, &value);
                         switch (hci_result) {
                         case TOS_SUCCESS:
                                 toshiba_acpi_report_hotkey(dev, (int)value);
@@ -1972,8 +1967,8 @@ static void toshiba_acpi_notify(struct acpi_device *acpi_dev, u32 event)
                                  * issue on some machines where system events
                                  * sporadically become disabled.
                                  */
-                                hci_write1(dev, HCI_SYSTEM_EVENT, 1,
-                                           &hci_result);
+                                hci_result =
+                                        hci_write1(dev, HCI_SYSTEM_EVENT, 1);
                                 pr_notice("Re-enabled hotkeys\n");
                                 /* fall through */
                         default:
@@ -1991,7 +1986,7 @@ static int toshiba_acpi_suspend(struct device *device)
         u32 result;
 
         if (dev->hotkey_dev)
-                hci_write1(dev, HCI_HOTKEY_EVENT, HCI_HOTKEY_DISABLE, &result);
+                result = hci_write1(dev, HCI_HOTKEY_EVENT, HCI_HOTKEY_DISABLE);
 
         return 0;
 }
@@ -2008,7 +2003,7 @@ static int toshiba_acpi_resume(struct device *device)
                 if (ACPI_FAILURE(status))
                         pr_info("Unable to re-enable hotkeys\n");
 
-                hci_write1(dev, HCI_HOTKEY_EVENT, HCI_HOTKEY_ENABLE, &result);
+                result = hci_write1(dev, HCI_HOTKEY_EVENT, HCI_HOTKEY_ENABLE);
         }
 
         return 0;