| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Message-Id: <1412044809-3366-4-git-send-email-coproscefalo@gmail.com>
Date: Mon, 29 Sep 2014 20:40:09 -0600
From: Azael Avalos <coproscefalo@...il.com>
To: Darren Hart <dvhart@...radead.org>,
platform-driver-x86@...r.kernel.org, linux-kernel@...r.kernel.org
Cc: Azael Avalos <coproscefalo@...il.com>
Subject: [PATCH v2 3/3] 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@...il.com>
---
drivers/platform/x86/toshiba_acpi.c | 129 +++++++++++++++++-------------------
1 file changed, 62 insertions(+), 67 deletions(-)
diff --git a/drivers/platform/x86/toshiba_acpi.c b/drivers/platform/x86/toshiba_acpi.c
index 589a858..5d509ea 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;
--
2.0.0
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
Powered by blists - more mailing lists