| 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
| ||
|
Date: Thu, 13 Feb 2014 14:45:26 -0500
From: Dave Jones <davej@...hat.com>
To: linux-kernel@...r.kernel.org
Cc: gregkh@...uxfoundation.org
Subject: [PATCH 05/38] staging/bcm: move IOCTL_BCM_GPIO_SET_REQUEST case out to its own function.
bcm_char_ioctl is one of the longest non-generated functions in the kernel,
at 1906 lines. Splitting it up into multiple functions should simplify
this a lot.
Signed-off-by: Dave Jones <davej@...oraproject.org>
---
drivers/staging/bcm/Bcmchar.c | 215 ++++++++++++++++++++++--------------------
1 file changed, 111 insertions(+), 104 deletions(-)
diff --git a/drivers/staging/bcm/Bcmchar.c b/drivers/staging/bcm/Bcmchar.c
index c2219c544811..a7991289c7c1 100644
--- a/drivers/staging/bcm/Bcmchar.c
+++ b/drivers/staging/bcm/Bcmchar.c
@@ -374,6 +374,114 @@ static int bcm_char_ioctl_eeprom_reg_write(void __user *argp, struct bcm_mini_ad
return Status;
}
+static int bcm_char_ioctl_gpio_set_request(void __user *argp, struct bcm_mini_adapter *Adapter)
+{
+ struct bcm_gpio_info gpio_info = {0};
+ struct bcm_ioctl_buffer IoBuffer;
+ UCHAR ucResetValue[4];
+ UINT value = 0;
+ UINT uiBit = 0;
+ UINT uiOperation = 0;
+ INT Status;
+ int bytes;
+
+ if ((Adapter->IdleMode == TRUE) ||
+ (Adapter->bShutStatus == TRUE) ||
+ (Adapter->bPreparingForLowPowerMode == TRUE)) {
+
+ BCM_DEBUG_PRINT(Adapter, DBG_TYPE_OTHERS, OSAL_DBG,
+ DBG_LVL_ALL,
+ "GPIO Can't be set/clear in Low power Mode");
+ return -EACCES;
+ }
+
+ if (copy_from_user(&IoBuffer, argp, sizeof(struct bcm_ioctl_buffer)))
+ return -EFAULT;
+
+ if (IoBuffer.InputLength > sizeof(gpio_info))
+ return -EINVAL;
+
+ if (copy_from_user(&gpio_info, IoBuffer.InputBuffer, IoBuffer.InputLength))
+ return -EFAULT;
+
+ uiBit = gpio_info.uiGpioNumber;
+ uiOperation = gpio_info.uiGpioValue;
+ value = (1<<uiBit);
+
+ if (IsReqGpioIsLedInNVM(Adapter, value) == false) {
+ BCM_DEBUG_PRINT(Adapter, DBG_TYPE_OTHERS, OSAL_DBG,
+ DBG_LVL_ALL,
+ "Sorry, Requested GPIO<0x%X> is not correspond to LED !!!",
+ value);
+ return -EINVAL;
+ }
+
+ /* Set - setting 1 */
+ if (uiOperation) {
+ /* Set the gpio output register */
+ Status = wrmaltWithLock(Adapter,
+ BCM_GPIO_OUTPUT_SET_REG,
+ (PUINT)(&value), sizeof(UINT));
+
+ if (Status == STATUS_SUCCESS) {
+ BCM_DEBUG_PRINT(Adapter, DBG_TYPE_OTHERS,
+ OSAL_DBG, DBG_LVL_ALL,
+ "Set the GPIO bit\n");
+ } else {
+ BCM_DEBUG_PRINT(Adapter, DBG_TYPE_OTHERS,
+ OSAL_DBG, DBG_LVL_ALL,
+ "Failed to set the %dth GPIO\n",
+ uiBit);
+ return Status;
+ }
+ } else {
+ /* Set the gpio output register */
+ Status = wrmaltWithLock(Adapter,
+ BCM_GPIO_OUTPUT_CLR_REG,
+ (PUINT)(&value), sizeof(UINT));
+
+ if (Status == STATUS_SUCCESS) {
+ BCM_DEBUG_PRINT(Adapter, DBG_TYPE_OTHERS,
+ OSAL_DBG, DBG_LVL_ALL,
+ "Set the GPIO bit\n");
+ } else {
+ BCM_DEBUG_PRINT(Adapter, DBG_TYPE_OTHERS,
+ OSAL_DBG, DBG_LVL_ALL,
+ "Failed to clear the %dth GPIO\n",
+ uiBit);
+ return Status;
+ }
+ }
+
+ bytes = rdmaltWithLock(Adapter, (UINT)GPIO_MODE_REGISTER,
+ (PUINT)ucResetValue, sizeof(UINT));
+ if (bytes < 0) {
+ Status = bytes;
+ BCM_DEBUG_PRINT(Adapter, DBG_TYPE_OTHERS, OSAL_DBG, DBG_LVL_ALL,
+ "GPIO_MODE_REGISTER read failed");
+ return Status;
+ } else {
+ Status = STATUS_SUCCESS;
+ }
+
+ /* Set the gpio mode register to output */
+ *(UINT *)ucResetValue |= (1<<uiBit);
+ Status = wrmaltWithLock(Adapter, GPIO_MODE_REGISTER,
+ (PUINT)ucResetValue, sizeof(UINT));
+
+ if (Status == STATUS_SUCCESS) {
+ BCM_DEBUG_PRINT(Adapter, DBG_TYPE_OTHERS, OSAL_DBG,
+ DBG_LVL_ALL,
+ "Set the GPIO to output Mode\n");
+ } else {
+ BCM_DEBUG_PRINT(Adapter, DBG_TYPE_OTHERS, OSAL_DBG,
+ DBG_LVL_ALL,
+ "Failed to put GPIO in Output Mode\n");
+ }
+
+ return Status;
+}
+
static long bcm_char_ioctl(struct file *filp, UINT cmd, ULONG arg)
{
struct bcm_tarang_data *pTarang = filp->private_data;
@@ -443,110 +551,9 @@ static long bcm_char_ioctl(struct file *filp, UINT cmd, ULONG arg)
Status = bcm_char_ioctl_eeprom_reg_write(argp, Adapter, cmd);
return Status;
- case IOCTL_BCM_GPIO_SET_REQUEST: {
- UCHAR ucResetValue[4];
- UINT value = 0;
- UINT uiBit = 0;
- UINT uiOperation = 0;
- struct bcm_gpio_info gpio_info = {0};
-
- if ((Adapter->IdleMode == TRUE) ||
- (Adapter->bShutStatus == TRUE) ||
- (Adapter->bPreparingForLowPowerMode == TRUE)) {
-
- BCM_DEBUG_PRINT(Adapter, DBG_TYPE_OTHERS, OSAL_DBG,
- DBG_LVL_ALL,
- "GPIO Can't be set/clear in Low power Mode");
- return -EACCES;
- }
-
- if (copy_from_user(&IoBuffer, argp, sizeof(struct bcm_ioctl_buffer)))
- return -EFAULT;
-
- if (IoBuffer.InputLength > sizeof(gpio_info))
- return -EINVAL;
-
- if (copy_from_user(&gpio_info, IoBuffer.InputBuffer, IoBuffer.InputLength))
- return -EFAULT;
-
- uiBit = gpio_info.uiGpioNumber;
- uiOperation = gpio_info.uiGpioValue;
- value = (1<<uiBit);
-
- if (IsReqGpioIsLedInNVM(Adapter, value) == false) {
- BCM_DEBUG_PRINT(Adapter, DBG_TYPE_OTHERS, OSAL_DBG,
- DBG_LVL_ALL,
- "Sorry, Requested GPIO<0x%X> is not correspond to LED !!!",
- value);
- Status = -EINVAL;
- break;
- }
-
- /* Set - setting 1 */
- if (uiOperation) {
- /* Set the gpio output register */
- Status = wrmaltWithLock(Adapter,
- BCM_GPIO_OUTPUT_SET_REG,
- (PUINT)(&value), sizeof(UINT));
-
- if (Status == STATUS_SUCCESS) {
- BCM_DEBUG_PRINT(Adapter, DBG_TYPE_OTHERS,
- OSAL_DBG, DBG_LVL_ALL,
- "Set the GPIO bit\n");
- } else {
- BCM_DEBUG_PRINT(Adapter, DBG_TYPE_OTHERS,
- OSAL_DBG, DBG_LVL_ALL,
- "Failed to set the %dth GPIO\n",
- uiBit);
- break;
- }
- } else {
- /* Set the gpio output register */
- Status = wrmaltWithLock(Adapter,
- BCM_GPIO_OUTPUT_CLR_REG,
- (PUINT)(&value), sizeof(UINT));
-
- if (Status == STATUS_SUCCESS) {
- BCM_DEBUG_PRINT(Adapter, DBG_TYPE_OTHERS,
- OSAL_DBG, DBG_LVL_ALL,
- "Set the GPIO bit\n");
- } else {
- BCM_DEBUG_PRINT(Adapter, DBG_TYPE_OTHERS,
- OSAL_DBG, DBG_LVL_ALL,
- "Failed to clear the %dth GPIO\n",
- uiBit);
- break;
- }
- }
-
- bytes = rdmaltWithLock(Adapter, (UINT)GPIO_MODE_REGISTER,
- (PUINT)ucResetValue, sizeof(UINT));
- if (bytes < 0) {
- Status = bytes;
- BCM_DEBUG_PRINT(Adapter, DBG_TYPE_OTHERS, OSAL_DBG, DBG_LVL_ALL,
- "GPIO_MODE_REGISTER read failed");
- break;
- } else {
- Status = STATUS_SUCCESS;
- }
-
- /* Set the gpio mode register to output */
- *(UINT *)ucResetValue |= (1<<uiBit);
- Status = wrmaltWithLock(Adapter, GPIO_MODE_REGISTER,
- (PUINT)ucResetValue, sizeof(UINT));
-
- if (Status == STATUS_SUCCESS) {
- BCM_DEBUG_PRINT(Adapter, DBG_TYPE_OTHERS, OSAL_DBG,
- DBG_LVL_ALL,
- "Set the GPIO to output Mode\n");
- } else {
- BCM_DEBUG_PRINT(Adapter, DBG_TYPE_OTHERS, OSAL_DBG,
- DBG_LVL_ALL,
- "Failed to put GPIO in Output Mode\n");
- break;
- }
- }
- break;
+ case IOCTL_BCM_GPIO_SET_REQUEST:
+ Status = bcm_char_ioctl_gpio_set_request(argp, Adapter);
+ return Status;
case BCM_LED_THREAD_STATE_CHANGE_REQ: {
struct bcm_user_thread_req threadReq = {0};
--
1.8.5.3
--
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