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scsi: 3w-9xxx: Whitespace cleanup

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Link: https://lore.kernel.org/r/20210113090500.129644-4-hare@suse.de
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Hannes Reinecke 2021-01-13 10:04:28 +01:00 committed by Martin K. Petersen
parent 8148dfba29
commit bf4eebbf53
2 changed files with 113 additions and 99 deletions
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56
drivers/scsi/3w-9xxx.c
View File

@ -128,14 +128,14 @@ static int twa_fill_sense(TW_Device_Extension *tw_dev, int request_id, int copy_
static void twa_free_request_id(TW_Device_Extension *tw_dev,int request_id);
static void twa_get_request_id(TW_Device_Extension *tw_dev, int *request_id);
static int twa_initconnection(TW_Device_Extension *tw_dev, int message_credits,
u32 set_features, unsigned short current_fw_srl,
unsigned short current_fw_arch_id,
unsigned short current_fw_branch,
unsigned short current_fw_build,
unsigned short *fw_on_ctlr_srl,
unsigned short *fw_on_ctlr_arch_id,
unsigned short *fw_on_ctlr_branch,
unsigned short *fw_on_ctlr_build,
u32 set_features, unsigned short current_fw_srl,
unsigned short current_fw_arch_id,
unsigned short current_fw_branch,
unsigned short current_fw_build,
unsigned short *fw_on_ctlr_srl,
unsigned short *fw_on_ctlr_arch_id,
unsigned short *fw_on_ctlr_branch,
unsigned short *fw_on_ctlr_build,
u32 *init_connect_result);
static void twa_load_sgl(TW_Device_Extension *tw_dev, TW_Command_Full *full_command_packet, int request_id, dma_addr_t dma_handle, int length);
static int twa_poll_response(TW_Device_Extension *tw_dev, int request_id, int seconds);
@ -171,7 +171,7 @@ static ssize_t twa_show_stats(struct device *dev,
"Last sector count: %4d\n"
"Max sector count: %4d\n"
"SCSI Host Resets: %4d\n"
"AEN's: %4d\n",
"AEN's: %4d\n",
TW_DRIVER_VERSION,
tw_dev->posted_request_count,
tw_dev->max_posted_request_count,
@ -190,7 +190,7 @@ static ssize_t twa_show_stats(struct device *dev,
/* Create sysfs 'stats' entry */
static struct device_attribute twa_host_stats_attr = {
.attr = {
.name = "stats",
.name = "stats",
.mode = S_IRUGO,
},
.show = twa_show_stats
@ -242,7 +242,7 @@ static int twa_aen_complete(TW_Device_Extension *tw_dev, int request_id)
/* Keep reading the queue in case there are more aen's */
if (twa_aen_read_queue(tw_dev, request_id))
goto out2;
else {
else {
retval = 0;
goto out;
}
@ -497,7 +497,7 @@ static void twa_aen_sync_time(TW_Device_Extension *tw_dev, int request_id)
param->parameter_id = cpu_to_le16(0x3); /* SchedulerTime */
param->parameter_size_bytes = cpu_to_le16(4);
/* Convert system time in UTC to local time seconds since last
/* Convert system time in UTC to local time seconds since last
Sunday 12:00AM */
local_time = (ktime_get_real_seconds() - (sys_tz.tz_minuteswest * 60));
div_u64_rem(local_time - (3 * 86400), 604800, &schedulertime);
@ -729,7 +729,7 @@ static long twa_chrdev_ioctl(struct file *file, unsigned int cmd, unsigned long
/* Now copy in the command packet response */
memcpy(&(tw_ioctl->firmware_command), tw_dev->command_packet_virt[request_id], sizeof(TW_Command_Full));
/* Now complete the io */
spin_lock_irqsave(tw_dev->host->host_lock, flags);
tw_dev->posted_request_count--;
@ -766,7 +766,7 @@ static long twa_chrdev_ioctl(struct file *file, unsigned int cmd, unsigned long
if (tw_dev->aen_clobber) {
tw_ioctl->driver_command.status = TW_IOCTL_ERROR_STATUS_AEN_CLOBBER;
tw_dev->aen_clobber = 0;
} else
} else
tw_ioctl->driver_command.status = 0;
event_index = tw_dev->error_index;
} else {
@ -1067,8 +1067,8 @@ static void *twa_get_param(TW_Device_Extension *tw_dev, int request_id, int tabl
command_packet = &full_command_packet->command.oldcommand;
command_packet->opcode__sgloffset = TW_OPSGL_IN(2, TW_OP_GET_PARAM);
command_packet->size = TW_COMMAND_SIZE;
command_packet->request_id = request_id;
command_packet->size = TW_COMMAND_SIZE;
command_packet->request_id = request_id;
command_packet->byte6_offset.block_count = cpu_to_le16(1);
/* Now setup the param */
@ -1106,14 +1106,14 @@ static void twa_get_request_id(TW_Device_Extension *tw_dev, int *request_id)
/* This function will send an initconnection command to controller */
static int twa_initconnection(TW_Device_Extension *tw_dev, int message_credits,
u32 set_features, unsigned short current_fw_srl,
unsigned short current_fw_arch_id,
unsigned short current_fw_branch,
unsigned short current_fw_build,
unsigned short *fw_on_ctlr_srl,
unsigned short *fw_on_ctlr_arch_id,
unsigned short *fw_on_ctlr_branch,
unsigned short *fw_on_ctlr_build,
u32 set_features, unsigned short current_fw_srl,
unsigned short current_fw_arch_id,
unsigned short current_fw_branch,
unsigned short current_fw_build,
unsigned short *fw_on_ctlr_srl,
unsigned short *fw_on_ctlr_arch_id,
unsigned short *fw_on_ctlr_branch,
unsigned short *fw_on_ctlr_build,
u32 *init_connect_result)
{
TW_Command_Full *full_command_packet;
@ -1124,7 +1124,7 @@ static int twa_initconnection(TW_Device_Extension *tw_dev, int message_credits,
full_command_packet = tw_dev->command_packet_virt[request_id];
memset(full_command_packet, 0, sizeof(TW_Command_Full));
full_command_packet->header.header_desc.size_header = 128;
tw_initconnect = (TW_Initconnect *)&full_command_packet->command.oldcommand;
tw_initconnect->opcode__reserved = TW_OPRES_IN(0, TW_OP_INIT_CONNECTION);
tw_initconnect->request_id = request_id;
@ -1142,7 +1142,7 @@ static int twa_initconnection(TW_Device_Extension *tw_dev, int message_credits,
tw_initconnect->fw_arch_id = cpu_to_le16(current_fw_arch_id);
tw_initconnect->fw_branch = cpu_to_le16(current_fw_branch);
tw_initconnect->fw_build = cpu_to_le16(current_fw_build);
} else
} else
tw_initconnect->size = TW_INIT_COMMAND_PACKET_SIZE;
/* Send command packet to the board */
@ -1455,7 +1455,7 @@ out:
/* This function will poll the status register for a flag */
static int twa_poll_status(TW_Device_Extension *tw_dev, u32 flag, int seconds)
{
u32 status_reg_value;
u32 status_reg_value;
unsigned long before;
int retval = 1;
@ -1770,7 +1770,7 @@ static int twa_scsi_queue_lck(struct scsi_cmnd *SCpnt, void (*done)(struct scsi_
/* Save done function into scsi_cmnd struct */
SCpnt->scsi_done = done;
/* Get a free request id */
twa_get_request_id(tw_dev, &request_id);

156
drivers/scsi/3w-9xxx.h
View File

@ -49,8 +49,8 @@
/* AEN string type */
typedef struct TAG_twa_message_type {
unsigned int code;
char* text;
unsigned int code;
char* text;
} twa_message_type;
/* AEN strings */
@ -263,9 +263,9 @@ static twa_message_type twa_error_table[] = {
#define TW_CONTROL_ENABLE_INTERRUPTS 0x00000080
#define TW_CONTROL_DISABLE_INTERRUPTS 0x00000040
#define TW_CONTROL_ISSUE_HOST_INTERRUPT 0x00000020
#define TW_CONTROL_CLEAR_PARITY_ERROR 0x00800000
#define TW_CONTROL_CLEAR_QUEUE_ERROR 0x00400000
#define TW_CONTROL_CLEAR_PCI_ABORT 0x00100000
#define TW_CONTROL_CLEAR_PARITY_ERROR 0x00800000
#define TW_CONTROL_CLEAR_QUEUE_ERROR 0x00400000
#define TW_CONTROL_CLEAR_PCI_ABORT 0x00100000
/* Status register bit definitions */
#define TW_STATUS_MAJOR_VERSION_MASK 0xF0000000
@ -284,25 +284,25 @@ static twa_message_type twa_error_table[] = {
#define TW_STATUS_COMMAND_QUEUE_EMPTY 0x00001000
#define TW_STATUS_EXPECTED_BITS 0x00002000
#define TW_STATUS_UNEXPECTED_BITS 0x00F00000
#define TW_STATUS_VALID_INTERRUPT 0x00DF0000
#define TW_STATUS_VALID_INTERRUPT 0x00DF0000
/* PCI related defines */
#define TW_PCI_CLEAR_PARITY_ERRORS 0xc100
#define TW_PCI_CLEAR_PCI_ABORT 0x2000
/* Command packet opcodes used by the driver */
#define TW_OP_INIT_CONNECTION 0x1
#define TW_OP_GET_PARAM 0x12
#define TW_OP_SET_PARAM 0x13
#define TW_OP_EXECUTE_SCSI 0x10
#define TW_OP_INIT_CONNECTION 0x1
#define TW_OP_GET_PARAM 0x12
#define TW_OP_SET_PARAM 0x13
#define TW_OP_EXECUTE_SCSI 0x10
#define TW_OP_DOWNLOAD_FIRMWARE 0x16
#define TW_OP_RESET 0x1C
#define TW_OP_RESET 0x1C
/* Asynchronous Event Notification (AEN) codes used by the driver */
#define TW_AEN_QUEUE_EMPTY 0x0000
#define TW_AEN_SOFT_RESET 0x0001
#define TW_AEN_QUEUE_EMPTY 0x0000
#define TW_AEN_SOFT_RESET 0x0001
#define TW_AEN_SYNC_TIME_WITH_HOST 0x031
#define TW_AEN_SEVERITY_ERROR 0x1
#define TW_AEN_SEVERITY_ERROR 0x1
#define TW_AEN_SEVERITY_DEBUG 0x4
#define TW_AEN_NOT_RETRIEVED 0x1
#define TW_AEN_RETRIEVED 0x2
@ -323,9 +323,9 @@ static twa_message_type twa_error_table[] = {
/* Misc defines */
#define TW_9550SX_DRAIN_COMPLETED 0xFFFF
#define TW_SECTOR_SIZE 512
#define TW_ALIGNMENT_9000 4 /* 4 bytes */
#define TW_ALIGNMENT_9000_SGL 0x3
#define TW_SECTOR_SIZE 512
#define TW_ALIGNMENT_9000 4 /* 4 bytes */
#define TW_ALIGNMENT_9000_SGL 0x3
#define TW_MAX_UNITS 16
#define TW_MAX_UNITS_9650SE 32
#define TW_INIT_MESSAGE_CREDITS 0x100
@ -338,7 +338,7 @@ static twa_message_type twa_error_table[] = {
#define TW_BASE_FW_SRL 24
#define TW_BASE_FW_BRANCH 0
#define TW_BASE_FW_BUILD 1
#define TW_FW_SRL_LUNS_SUPPORTED 28
#define TW_FW_SRL_LUNS_SUPPORTED 28
#define TW_Q_LENGTH 256
#define TW_Q_START 0
#define TW_MAX_SLOT 32
@ -346,19 +346,19 @@ static twa_message_type twa_error_table[] = {
#define TW_MAX_CMDS_PER_LUN 254
#define TW_MAX_RESPONSE_DRAIN 256
#define TW_MAX_AEN_DRAIN 255
#define TW_IN_RESET 2
#define TW_IN_RESET 2
#define TW_USING_MSI 3
#define TW_IN_ATTENTION_LOOP 4
#define TW_MAX_SECTORS 256
#define TW_AEN_WAIT_TIME 1000
#define TW_IOCTL_WAIT_TIME (1 * HZ) /* 1 second */
#define TW_MAX_CDB_LEN 16
#define TW_ISR_DONT_COMPLETE 2
#define TW_ISR_DONT_RESULT 3
#define TW_IOCTL_CHRDEV_TIMEOUT 60 /* 60 seconds */
#define TW_IOCTL_CHRDEV_FREE -1
#define TW_COMMAND_OFFSET 128 /* 128 bytes */
#define TW_VERSION_TABLE 0x0402
#define TW_MAX_SECTORS 256
#define TW_AEN_WAIT_TIME 1000
#define TW_IOCTL_WAIT_TIME (1 * HZ) /* 1 second */
#define TW_MAX_CDB_LEN 16
#define TW_ISR_DONT_COMPLETE 2
#define TW_ISR_DONT_RESULT 3
#define TW_IOCTL_CHRDEV_TIMEOUT 60 /* 60 seconds */
#define TW_IOCTL_CHRDEV_FREE -1
#define TW_COMMAND_OFFSET 128 /* 128 bytes */
#define TW_VERSION_TABLE 0x0402
#define TW_TIMEKEEP_TABLE 0x040A
#define TW_INFORMATION_TABLE 0x0403
#define TW_PARAM_FWVER 3
@ -367,22 +367,22 @@ static twa_message_type twa_error_table[] = {
#define TW_PARAM_BIOSVER_LENGTH 16
#define TW_PARAM_PORTCOUNT 3
#define TW_PARAM_PORTCOUNT_LENGTH 1
#define TW_MIN_SGL_LENGTH 0x200 /* 512 bytes */
#define TW_MAX_SENSE_LENGTH 256
#define TW_EVENT_SOURCE_AEN 0x1000
#define TW_EVENT_SOURCE_COMMAND 0x1001
#define TW_EVENT_SOURCE_PCHIP 0x1002
#define TW_EVENT_SOURCE_DRIVER 0x1003
#define TW_MIN_SGL_LENGTH 0x200 /* 512 bytes */
#define TW_MAX_SENSE_LENGTH 256
#define TW_EVENT_SOURCE_AEN 0x1000
#define TW_EVENT_SOURCE_COMMAND 0x1001
#define TW_EVENT_SOURCE_PCHIP 0x1002
#define TW_EVENT_SOURCE_DRIVER 0x1003
#define TW_IOCTL_GET_COMPATIBILITY_INFO 0x101
#define TW_IOCTL_GET_LAST_EVENT 0x102
#define TW_IOCTL_GET_FIRST_EVENT 0x103
#define TW_IOCTL_GET_NEXT_EVENT 0x104
#define TW_IOCTL_GET_PREVIOUS_EVENT 0x105
#define TW_IOCTL_GET_LOCK 0x106
#define TW_IOCTL_RELEASE_LOCK 0x107
#define TW_IOCTL_FIRMWARE_PASS_THROUGH 0x108
#define TW_IOCTL_GET_LAST_EVENT 0x102
#define TW_IOCTL_GET_FIRST_EVENT 0x103
#define TW_IOCTL_GET_NEXT_EVENT 0x104
#define TW_IOCTL_GET_PREVIOUS_EVENT 0x105
#define TW_IOCTL_GET_LOCK 0x106
#define TW_IOCTL_RELEASE_LOCK 0x107
#define TW_IOCTL_FIRMWARE_PASS_THROUGH 0x108
#define TW_IOCTL_ERROR_STATUS_NOT_LOCKED 0x1001 // Not locked
#define TW_IOCTL_ERROR_STATUS_LOCKED 0x1002 // Already locked
#define TW_IOCTL_ERROR_STATUS_LOCKED 0x1002 // Already locked
#define TW_IOCTL_ERROR_STATUS_NO_MORE_EVENTS 0x1003 // No more events
#define TW_IOCTL_ERROR_STATUS_AEN_CLOBBER 0x1004 // AEN clobber occurred
#define TW_IOCTL_ERROR_OS_EFAULT -EFAULT // Bad address
@ -397,12 +397,12 @@ static twa_message_type twa_error_table[] = {
#define TW_SENSE_DATA_LENGTH 18
#define TW_STATUS_CHECK_CONDITION 2
#define TW_ERROR_LOGICAL_UNIT_NOT_SUPPORTED 0x10a
#define TW_ERROR_UNIT_OFFLINE 0x128
#define TW_ERROR_UNIT_OFFLINE 0x128
#define TW_MESSAGE_SOURCE_CONTROLLER_ERROR 3
#define TW_MESSAGE_SOURCE_CONTROLLER_EVENT 4
#define TW_MESSAGE_SOURCE_LINUX_DRIVER 6
#define TW_MESSAGE_SOURCE_LINUX_DRIVER 6
#define TW_DRIVER TW_MESSAGE_SOURCE_LINUX_DRIVER
#define TW_MESSAGE_SOURCE_LINUX_OS 9
#define TW_MESSAGE_SOURCE_LINUX_OS 9
#define TW_OS TW_MESSAGE_SOURCE_LINUX_OS
#ifndef PCI_DEVICE_ID_3WARE_9000
#define PCI_DEVICE_ID_3WARE_9000 0x1002
@ -434,24 +434,38 @@ static twa_message_type twa_error_table[] = {
#define TW_RESID_OUT(x) ((x >> 4) & 0xff)
/* request_id: 12, lun: 4 */
#define TW_REQ_LUN_IN(lun, request_id) (((lun << 12) & 0xf000) | (request_id & 0xfff))
#define TW_REQ_LUN_IN(lun, request_id) \
(((lun << 12) & 0xf000) | (request_id & 0xfff))
#define TW_LUN_OUT(lun) ((lun >> 12) & 0xf)
/* Macros */
#define TW_CONTROL_REG_ADDR(x) (x->base_addr)
#define TW_STATUS_REG_ADDR(x) ((unsigned char __iomem *)x->base_addr + 0x4)
#define TW_COMMAND_QUEUE_REG_ADDR(x) (sizeof(dma_addr_t) > 4 ? ((unsigned char __iomem *)x->base_addr + 0x20) : ((unsigned char __iomem *)x->base_addr + 0x8))
#define TW_COMMAND_QUEUE_REG_ADDR_LARGE(x) ((unsigned char __iomem *)x->base_addr + 0x20)
#define TW_RESPONSE_QUEUE_REG_ADDR(x) ((unsigned char __iomem *)x->base_addr + 0xC)
#define TW_RESPONSE_QUEUE_REG_ADDR_LARGE(x) ((unsigned char __iomem *)x->base_addr + 0x30)
#define TW_CLEAR_ALL_INTERRUPTS(x) (writel(TW_STATUS_VALID_INTERRUPT, TW_CONTROL_REG_ADDR(x)))
#define TW_CLEAR_ATTENTION_INTERRUPT(x) (writel(TW_CONTROL_CLEAR_ATTENTION_INTERRUPT, TW_CONTROL_REG_ADDR(x)))
#define TW_CLEAR_HOST_INTERRUPT(x) (writel(TW_CONTROL_CLEAR_HOST_INTERRUPT, TW_CONTROL_REG_ADDR(x)))
#define TW_DISABLE_INTERRUPTS(x) (writel(TW_CONTROL_DISABLE_INTERRUPTS, TW_CONTROL_REG_ADDR(x)))
#define TW_ENABLE_AND_CLEAR_INTERRUPTS(x) (writel(TW_CONTROL_CLEAR_ATTENTION_INTERRUPT | TW_CONTROL_UNMASK_RESPONSE_INTERRUPT | TW_CONTROL_ENABLE_INTERRUPTS, TW_CONTROL_REG_ADDR(x)))
#define TW_MASK_COMMAND_INTERRUPT(x) (writel(TW_CONTROL_MASK_COMMAND_INTERRUPT, TW_CONTROL_REG_ADDR(x)))
#define TW_UNMASK_COMMAND_INTERRUPT(x) (writel(TW_CONTROL_UNMASK_COMMAND_INTERRUPT, TW_CONTROL_REG_ADDR(x)))
#define TW_SOFT_RESET(x) (writel(TW_CONTROL_ISSUE_SOFT_RESET | \
#define TW_COMMAND_QUEUE_REG_ADDR(x) \
(sizeof(dma_addr_t) > 4 ? ((unsigned char __iomem *)x->base_addr + 0x20) : ((unsigned char __iomem *)x->base_addr + 0x8))
#define TW_COMMAND_QUEUE_REG_ADDR_LARGE(x) \
((unsigned char __iomem *)x->base_addr + 0x20)
#define TW_RESPONSE_QUEUE_REG_ADDR(x) \
((unsigned char __iomem *)x->base_addr + 0xC)
#define TW_RESPONSE_QUEUE_REG_ADDR_LARGE(x) \
((unsigned char __iomem *)x->base_addr + 0x30)
#define TW_CLEAR_ALL_INTERRUPTS(x) \
(writel(TW_STATUS_VALID_INTERRUPT, TW_CONTROL_REG_ADDR(x)))
#define TW_CLEAR_ATTENTION_INTERRUPT(x) \
(writel(TW_CONTROL_CLEAR_ATTENTION_INTERRUPT, TW_CONTROL_REG_ADDR(x)))
#define TW_CLEAR_HOST_INTERRUPT(x) \
(writel(TW_CONTROL_CLEAR_HOST_INTERRUPT, TW_CONTROL_REG_ADDR(x)))
#define TW_DISABLE_INTERRUPTS(x) \
(writel(TW_CONTROL_DISABLE_INTERRUPTS, TW_CONTROL_REG_ADDR(x)))
#define TW_ENABLE_AND_CLEAR_INTERRUPTS(x) \
(writel(TW_CONTROL_CLEAR_ATTENTION_INTERRUPT | \
TW_CONTROL_UNMASK_RESPONSE_INTERRUPT | \
TW_CONTROL_ENABLE_INTERRUPTS, TW_CONTROL_REG_ADDR(x)))
#define TW_MASK_COMMAND_INTERRUPT(x) \
(writel(TW_CONTROL_MASK_COMMAND_INTERRUPT, TW_CONTROL_REG_ADDR(x)))
#define TW_UNMASK_COMMAND_INTERRUPT(x) \
(writel(TW_CONTROL_UNMASK_COMMAND_INTERRUPT, TW_CONTROL_REG_ADDR(x)))
#define TW_SOFT_RESET(x) (writel(TW_CONTROL_ISSUE_SOFT_RESET | \
TW_CONTROL_CLEAR_HOST_INTERRUPT | \
TW_CONTROL_CLEAR_ATTENTION_INTERRUPT | \
TW_CONTROL_MASK_COMMAND_INTERRUPT | \
@ -586,7 +600,7 @@ typedef struct TAG_TW_Ioctl_Driver_Command {
typedef struct TAG_TW_Ioctl_Apache {
TW_Ioctl_Driver_Command driver_command;
char padding[488];
char padding[488];
TW_Command_Full firmware_command;
char data_buffer[1];
} TW_Ioctl_Buf_Apache;
@ -634,10 +648,10 @@ typedef struct TAG_TW_Compatibility_Info
#pragma pack()
typedef struct TAG_TW_Device_Extension {
u32 __iomem *base_addr;
unsigned long *generic_buffer_virt[TW_Q_LENGTH];
dma_addr_t generic_buffer_phys[TW_Q_LENGTH];
TW_Command_Full *command_packet_virt[TW_Q_LENGTH];
u32 __iomem *base_addr;
unsigned long *generic_buffer_virt[TW_Q_LENGTH];
dma_addr_t generic_buffer_phys[TW_Q_LENGTH];
TW_Command_Full *command_packet_virt[TW_Q_LENGTH];
dma_addr_t command_packet_phys[TW_Q_LENGTH];
struct pci_dev *tw_pci_dev;
struct scsi_cmnd *srb[TW_Q_LENGTH];
@ -647,10 +661,10 @@ typedef struct TAG_TW_Device_Extension {
unsigned char pending_queue[TW_Q_LENGTH];
unsigned char pending_head;
unsigned char pending_tail;
int state[TW_Q_LENGTH];
int state[TW_Q_LENGTH];
unsigned int posted_request_count;
unsigned int max_posted_request_count;
unsigned int pending_request_count;
unsigned int pending_request_count;
unsigned int max_pending_request_count;
unsigned int max_sgl_entries;
unsigned int sgl_entries;
@ -661,12 +675,12 @@ typedef struct TAG_TW_Device_Extension {
struct Scsi_Host *host;
long flags;
int reset_print;
TW_Event *event_queue[TW_Q_LENGTH];
unsigned char error_index;
TW_Event *event_queue[TW_Q_LENGTH];
unsigned char error_index;
unsigned char event_queue_wrapped;
unsigned int error_sequence_id;
int ioctl_sem_lock;
ktime_t ioctl_time;
unsigned int error_sequence_id;
int ioctl_sem_lock;
ktime_t ioctl_time;
int chrdev_request_id;
wait_queue_head_t ioctl_wqueue;
struct mutex ioctl_lock;