i40e: rename variable to prevent clash of understanding

This code returns something that becomes the errno value from ethtool and
passes around a pointer to an errno variable.  This patch changes the name
slightly to differentiate it from the actual user errno variable.

Change-ID: Idaa37845c069e66f4cea072e90f471bb2142454d
Signed-off-by: Shannon Nelson <shannon.nelson@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

diff --git a/drivers/net/ethernet/intel/i40e/i40e_nvm.c b/drivers/net/ethernet/intel/i40e/i40e_nvm.c
index 9b83abc..3f2fec9 100644 (file)
--- a/drivers/net/ethernet/intel/i40e/i40e_nvm.c
+++ b/drivers/net/ethernet/intel/i40e/i40e_nvm.c
@@ -592,25 +592,25 @@ i40e_validate_nvm_checksum_exit:
 
 static i40e_status i40e_nvmupd_state_init(struct i40e_hw *hw,
                                          struct i40e_nvm_access *cmd,
-                                         u8 *bytes, int *errno);
+                                         u8 *bytes, int *perrno);
 static i40e_status i40e_nvmupd_state_reading(struct i40e_hw *hw,
                                             struct i40e_nvm_access *cmd,
-                                            u8 *bytes, int *errno);
+                                            u8 *bytes, int *perrno);
 static i40e_status i40e_nvmupd_state_writing(struct i40e_hw *hw,
                                             struct i40e_nvm_access *cmd,
                                             u8 *bytes, int *errno);
 static enum i40e_nvmupd_cmd i40e_nvmupd_validate_command(struct i40e_hw *hw,
                                                struct i40e_nvm_access *cmd,
-                                               int *errno);
+                                               int *perrno);
 static i40e_status i40e_nvmupd_nvm_erase(struct i40e_hw *hw,
                                         struct i40e_nvm_access *cmd,
-                                        int *errno);
+                                        int *perrno);
 static i40e_status i40e_nvmupd_nvm_write(struct i40e_hw *hw,
                                         struct i40e_nvm_access *cmd,
-                                        u8 *bytes, int *errno);
+                                        u8 *bytes, int *perrno);
 static i40e_status i40e_nvmupd_nvm_read(struct i40e_hw *hw,
                                        struct i40e_nvm_access *cmd,
-                                       u8 *bytes, int *errno);
+                                       u8 *bytes, int *perrno);
 static inline u8 i40e_nvmupd_get_module(u32 val)
 {
        return (u8)(val & I40E_NVM_MOD_PNT_MASK);
@@ -641,30 +641,30 @@ static char *i40e_nvm_update_state_str[] = {
  * @hw: pointer to hardware structure
  * @cmd: pointer to nvm update command
  * @bytes: pointer to the data buffer
- * @errno: pointer to return error code
+ * @perrno: pointer to return error code
  *
  * Dispatches command depending on what update state is current
  **/
 i40e_status i40e_nvmupd_command(struct i40e_hw *hw,
                                struct i40e_nvm_access *cmd,
-                               u8 *bytes, int *errno)
+                               u8 *bytes, int *perrno)
 {
        i40e_status status;
 
        /* assume success */
-       *errno = 0;
+       *perrno = 0;
 
        switch (hw->nvmupd_state) {
        case I40E_NVMUPD_STATE_INIT:
-               status = i40e_nvmupd_state_init(hw, cmd, bytes, errno);
+               status = i40e_nvmupd_state_init(hw, cmd, bytes, perrno);
                break;
 
        case I40E_NVMUPD_STATE_READING:
-               status = i40e_nvmupd_state_reading(hw, cmd, bytes, errno);
+               status = i40e_nvmupd_state_reading(hw, cmd, bytes, perrno);
                break;
 
        case I40E_NVMUPD_STATE_WRITING:
-               status = i40e_nvmupd_state_writing(hw, cmd, bytes, errno);
+               status = i40e_nvmupd_state_writing(hw, cmd, bytes, perrno);
                break;
 
        default:
@@ -672,7 +672,7 @@ i40e_status i40e_nvmupd_command(struct i40e_hw *hw,
                i40e_debug(hw, I40E_DEBUG_NVM,
                           "NVMUPD: no such state %d\n", hw->nvmupd_state);
                status = I40E_NOT_SUPPORTED;
-               *errno = -ESRCH;
+               *perrno = -ESRCH;
                break;
        }
        return status;
@@ -683,28 +683,28 @@ i40e_status i40e_nvmupd_command(struct i40e_hw *hw,
  * @hw: pointer to hardware structure
  * @cmd: pointer to nvm update command buffer
  * @bytes: pointer to the data buffer
- * @errno: pointer to return error code
+ * @perrno: pointer to return error code
  *
  * Process legitimate commands of the Init state and conditionally set next
  * state. Reject all other commands.
  **/
 static i40e_status i40e_nvmupd_state_init(struct i40e_hw *hw,
                                          struct i40e_nvm_access *cmd,
-                                         u8 *bytes, int *errno)
+                                         u8 *bytes, int *perrno)
 {
        i40e_status status = 0;
        enum i40e_nvmupd_cmd upd_cmd;
 
-       upd_cmd = i40e_nvmupd_validate_command(hw, cmd, errno);
+       upd_cmd = i40e_nvmupd_validate_command(hw, cmd, perrno);
 
        switch (upd_cmd) {
        case I40E_NVMUPD_READ_SA:
                status = i40e_acquire_nvm(hw, I40E_RESOURCE_READ);
                if (status) {
-                       *errno = i40e_aq_rc_to_posix(status,
+                       *perrno = i40e_aq_rc_to_posix(status,
                                                     hw->aq.asq_last_status);
                } else {
-                       status = i40e_nvmupd_nvm_read(hw, cmd, bytes, errno);
+                       status = i40e_nvmupd_nvm_read(hw, cmd, bytes, perrno);
                        i40e_release_nvm(hw);
                }
                break;
@@ -712,10 +712,10 @@ static i40e_status i40e_nvmupd_state_init(struct i40e_hw *hw,
        case I40E_NVMUPD_READ_SNT:
                status = i40e_acquire_nvm(hw, I40E_RESOURCE_READ);
                if (status) {
-                       *errno = i40e_aq_rc_to_posix(status,
+                       *perrno = i40e_aq_rc_to_posix(status,
                                                     hw->aq.asq_last_status);
                } else {
-                       status = i40e_nvmupd_nvm_read(hw, cmd, bytes, errno);
+                       status = i40e_nvmupd_nvm_read(hw, cmd, bytes, perrno);
                        if (status)
                                i40e_release_nvm(hw);
                        else
@@ -726,10 +726,10 @@ static i40e_status i40e_nvmupd_state_init(struct i40e_hw *hw,
        case I40E_NVMUPD_WRITE_ERA:
                status = i40e_acquire_nvm(hw, I40E_RESOURCE_WRITE);
                if (status) {
-                       *errno = i40e_aq_rc_to_posix(status,
+                       *perrno = i40e_aq_rc_to_posix(status,
                                                     hw->aq.asq_last_status);
                } else {
-                       status = i40e_nvmupd_nvm_erase(hw, cmd, errno);
+                       status = i40e_nvmupd_nvm_erase(hw, cmd, perrno);
                        if (status)
                                i40e_release_nvm(hw);
                        else
@@ -740,10 +740,10 @@ static i40e_status i40e_nvmupd_state_init(struct i40e_hw *hw,
        case I40E_NVMUPD_WRITE_SA:
                status = i40e_acquire_nvm(hw, I40E_RESOURCE_WRITE);
                if (status) {
-                       *errno = i40e_aq_rc_to_posix(status,
+                       *perrno = i40e_aq_rc_to_posix(status,
                                                     hw->aq.asq_last_status);
                } else {
-                       status = i40e_nvmupd_nvm_write(hw, cmd, bytes, errno);
+                       status = i40e_nvmupd_nvm_write(hw, cmd, bytes, perrno);
                        if (status)
                                i40e_release_nvm(hw);
                        else
@@ -754,10 +754,10 @@ static i40e_status i40e_nvmupd_state_init(struct i40e_hw *hw,
        case I40E_NVMUPD_WRITE_SNT:
                status = i40e_acquire_nvm(hw, I40E_RESOURCE_WRITE);
                if (status) {
-                       *errno = i40e_aq_rc_to_posix(status,
+                       *perrno = i40e_aq_rc_to_posix(status,
                                                     hw->aq.asq_last_status);
                } else {
-                       status = i40e_nvmupd_nvm_write(hw, cmd, bytes, errno);
+                       status = i40e_nvmupd_nvm_write(hw, cmd, bytes, perrno);
                        if (status)
                                i40e_release_nvm(hw);
                        else
@@ -768,12 +768,12 @@ static i40e_status i40e_nvmupd_state_init(struct i40e_hw *hw,
        case I40E_NVMUPD_CSUM_SA:
                status = i40e_acquire_nvm(hw, I40E_RESOURCE_WRITE);
                if (status) {
-                       *errno = i40e_aq_rc_to_posix(status,
+                       *perrno = i40e_aq_rc_to_posix(status,
                                                     hw->aq.asq_last_status);
                } else {
                        status = i40e_update_nvm_checksum(hw);
                        if (status) {
-                               *errno = hw->aq.asq_last_status ?
+                               *perrno = hw->aq.asq_last_status ?
                                   i40e_aq_rc_to_posix(status,
                                                       hw->aq.asq_last_status) :
                                   -EIO;
@@ -789,7 +789,7 @@ static i40e_status i40e_nvmupd_state_init(struct i40e_hw *hw,
                           "NVMUPD: bad cmd %s in init state\n",
                           i40e_nvm_update_state_str[upd_cmd]);
                status = I40E_ERR_NVM;
-               *errno = -ESRCH;
+               *perrno = -ESRCH;
                break;
        }
        return status;
@@ -800,28 +800,28 @@ static i40e_status i40e_nvmupd_state_init(struct i40e_hw *hw,
  * @hw: pointer to hardware structure
  * @cmd: pointer to nvm update command buffer
  * @bytes: pointer to the data buffer
- * @errno: pointer to return error code
+ * @perrno: pointer to return error code
  *
  * NVM ownership is already held.  Process legitimate commands and set any
  * change in state; reject all other commands.
  **/
 static i40e_status i40e_nvmupd_state_reading(struct i40e_hw *hw,
                                             struct i40e_nvm_access *cmd,
-                                            u8 *bytes, int *errno)
+                                            u8 *bytes, int *perrno)
 {
        i40e_status status;
        enum i40e_nvmupd_cmd upd_cmd;
 
-       upd_cmd = i40e_nvmupd_validate_command(hw, cmd, errno);
+       upd_cmd = i40e_nvmupd_validate_command(hw, cmd, perrno);
 
        switch (upd_cmd) {
        case I40E_NVMUPD_READ_SA:
        case I40E_NVMUPD_READ_CON:
-               status = i40e_nvmupd_nvm_read(hw, cmd, bytes, errno);
+               status = i40e_nvmupd_nvm_read(hw, cmd, bytes, perrno);
                break;
 
        case I40E_NVMUPD_READ_LCB:
-               status = i40e_nvmupd_nvm_read(hw, cmd, bytes, errno);
+               status = i40e_nvmupd_nvm_read(hw, cmd, bytes, perrno);
                i40e_release_nvm(hw);
                hw->nvmupd_state = I40E_NVMUPD_STATE_INIT;
                break;
@@ -831,7 +831,7 @@ static i40e_status i40e_nvmupd_state_reading(struct i40e_hw *hw,
                           "NVMUPD: bad cmd %s in reading state.\n",
                           i40e_nvm_update_state_str[upd_cmd]);
                status = I40E_NOT_SUPPORTED;
-               *errno = -ESRCH;
+               *perrno = -ESRCH;
                break;
        }
        return status;
@@ -842,29 +842,29 @@ static i40e_status i40e_nvmupd_state_reading(struct i40e_hw *hw,
  * @hw: pointer to hardware structure
  * @cmd: pointer to nvm update command buffer
  * @bytes: pointer to the data buffer
- * @errno: pointer to return error code
+ * @perrno: pointer to return error code
  *
  * NVM ownership is already held.  Process legitimate commands and set any
  * change in state; reject all other commands
  **/
 static i40e_status i40e_nvmupd_state_writing(struct i40e_hw *hw,
                                             struct i40e_nvm_access *cmd,
-                                            u8 *bytes, int *errno)
+                                            u8 *bytes, int *perrno)
 {
        i40e_status status;
        enum i40e_nvmupd_cmd upd_cmd;
        bool retry_attempt = false;
 
-       upd_cmd = i40e_nvmupd_validate_command(hw, cmd, errno);
+       upd_cmd = i40e_nvmupd_validate_command(hw, cmd, perrno);
 
 retry:
        switch (upd_cmd) {
        case I40E_NVMUPD_WRITE_CON:
-               status = i40e_nvmupd_nvm_write(hw, cmd, bytes, errno);
+               status = i40e_nvmupd_nvm_write(hw, cmd, bytes, perrno);
                break;
 
        case I40E_NVMUPD_WRITE_LCB:
-               status = i40e_nvmupd_nvm_write(hw, cmd, bytes, errno);
+               status = i40e_nvmupd_nvm_write(hw, cmd, bytes, perrno);
                if (!status)
                        hw->aq.nvm_release_on_done = true;
                hw->nvmupd_state = I40E_NVMUPD_STATE_INIT;
@@ -873,7 +873,7 @@ retry:
        case I40E_NVMUPD_CSUM_CON:
                status = i40e_update_nvm_checksum(hw);
                if (status) {
-                       *errno = hw->aq.asq_last_status ?
+                       *perrno = hw->aq.asq_last_status ?
                                   i40e_aq_rc_to_posix(status,
                                                       hw->aq.asq_last_status) :
                                   -EIO;
@@ -884,7 +884,7 @@ retry:
        case I40E_NVMUPD_CSUM_LCB:
                status = i40e_update_nvm_checksum(hw);
                if (status)
-                       *errno = hw->aq.asq_last_status ?
+                       *perrno = hw->aq.asq_last_status ?
                                   i40e_aq_rc_to_posix(status,
                                                       hw->aq.asq_last_status) :
                                   -EIO;
@@ -898,7 +898,7 @@ retry:
                           "NVMUPD: bad cmd %s in writing state.\n",
                           i40e_nvm_update_state_str[upd_cmd]);
                status = I40E_NOT_SUPPORTED;
-               *errno = -ESRCH;
+               *perrno = -ESRCH;
                break;
        }
 
@@ -941,13 +941,13 @@ retry:
  * i40e_nvmupd_validate_command - Validate given command
  * @hw: pointer to hardware structure
  * @cmd: pointer to nvm update command buffer
- * @errno: pointer to return error code
+ * @perrno: pointer to return error code
  *
  * Return one of the valid command types or I40E_NVMUPD_INVALID
  **/
 static enum i40e_nvmupd_cmd i40e_nvmupd_validate_command(struct i40e_hw *hw,
                                                 struct i40e_nvm_access *cmd,
-                                                int *errno)
+                                                int *perrno)
 {
        enum i40e_nvmupd_cmd upd_cmd;
        u8 transaction;
@@ -963,7 +963,7 @@ static enum i40e_nvmupd_cmd i40e_nvmupd_validate_command(struct i40e_hw *hw,
                i40e_debug(hw, I40E_DEBUG_NVM,
                           "i40e_nvmupd_validate_command data_size %d\n",
                           cmd->data_size);
-               *errno = -EFAULT;
+               *perrno = -EFAULT;
                return I40E_NVMUPD_INVALID;
        }
 
@@ -1020,10 +1020,10 @@ static enum i40e_nvmupd_cmd i40e_nvmupd_validate_command(struct i40e_hw *hw,
                   hw->aq.nvm_release_on_done);
 
        if (upd_cmd == I40E_NVMUPD_INVALID) {
-               *errno = -EFAULT;
+               *perrno = -EFAULT;
                i40e_debug(hw, I40E_DEBUG_NVM,
                           "i40e_nvmupd_validate_command returns %d errno %d\n",
-                          upd_cmd, *errno);
+                          upd_cmd, *perrno);
        }
        return upd_cmd;
 }
@@ -1033,13 +1033,13 @@ static enum i40e_nvmupd_cmd i40e_nvmupd_validate_command(struct i40e_hw *hw,
  * @hw: pointer to hardware structure
  * @cmd: pointer to nvm update command buffer
  * @bytes: pointer to the data buffer
- * @errno: pointer to return error code
+ * @perrno: pointer to return error code
  *
  * cmd structure contains identifiers and data buffer
  **/
 static i40e_status i40e_nvmupd_nvm_read(struct i40e_hw *hw,
                                        struct i40e_nvm_access *cmd,
-                                       u8 *bytes, int *errno)
+                                       u8 *bytes, int *perrno)
 {
        i40e_status status;
        u8 module, transaction;
@@ -1058,7 +1058,7 @@ static i40e_status i40e_nvmupd_nvm_read(struct i40e_hw *hw,
                i40e_debug(hw, I40E_DEBUG_NVM,
                           "i40e_nvmupd_nvm_read status %d aq %d\n",
                           status, hw->aq.asq_last_status);
-               *errno = i40e_aq_rc_to_posix(status, hw->aq.asq_last_status);
+               *perrno = i40e_aq_rc_to_posix(status, hw->aq.asq_last_status);
        }
 
        return status;
@@ -1068,13 +1068,13 @@ static i40e_status i40e_nvmupd_nvm_read(struct i40e_hw *hw,
  * i40e_nvmupd_nvm_erase - Erase an NVM module
  * @hw: pointer to hardware structure
  * @cmd: pointer to nvm update command buffer
- * @errno: pointer to return error code
+ * @perrno: pointer to return error code
  *
  * module, offset, data_size and data are in cmd structure
  **/
 static i40e_status i40e_nvmupd_nvm_erase(struct i40e_hw *hw,
                                         struct i40e_nvm_access *cmd,
-                                        int *errno)
+                                        int *perrno)
 {
        i40e_status status = 0;
        u8 module, transaction;
@@ -1092,7 +1092,7 @@ static i40e_status i40e_nvmupd_nvm_erase(struct i40e_hw *hw,
                i40e_debug(hw, I40E_DEBUG_NVM,
                           "i40e_nvmupd_nvm_erase status %d aq %d\n",
                           status, hw->aq.asq_last_status);
-               *errno = i40e_aq_rc_to_posix(status, hw->aq.asq_last_status);
+               *perrno = i40e_aq_rc_to_posix(status, hw->aq.asq_last_status);
        }
 
        return status;
@@ -1103,13 +1103,13 @@ static i40e_status i40e_nvmupd_nvm_erase(struct i40e_hw *hw,
  * @hw: pointer to hardware structure
  * @cmd: pointer to nvm update command buffer
  * @bytes: pointer to the data buffer
- * @errno: pointer to return error code
+ * @perrno: pointer to return error code
  *
  * module, offset, data_size and data are in cmd structure
  **/
 static i40e_status i40e_nvmupd_nvm_write(struct i40e_hw *hw,
                                         struct i40e_nvm_access *cmd,
-                                        u8 *bytes, int *errno)
+                                        u8 *bytes, int *perrno)
 {
        i40e_status status = 0;
        u8 module, transaction;
@@ -1128,7 +1128,7 @@ static i40e_status i40e_nvmupd_nvm_write(struct i40e_hw *hw,
                i40e_debug(hw, I40E_DEBUG_NVM,
                           "i40e_nvmupd_nvm_write status %d aq %d\n",
                           status, hw->aq.asq_last_status);
-               *errno = i40e_aq_rc_to_posix(status, hw->aq.asq_last_status);
+               *perrno = i40e_aq_rc_to_posix(status, hw->aq.asq_last_status);
        }
 
        return status;