Defined in 2 files as a function:
- drivers/char/mem.c, line 366 (as a function)
- drivers/usb/misc/cypress_cy7c63.c, line 170 (as a function)
Referenced in 2 files:
Smatch caller information:
drivers/usb/misc/cypress_cy7c63.c port0_show() -> read_port()
| Type | Parameter | Key | Value |
|---|---|---|---|
| PARAM_VALUE | 1 | attr | 7402530397989249024 |
| PARAM_VALUE | 1 | attr->attr | 4501920323693785088 |
| PARAM_VALUE | 1 | attr->show | 1-u64max |
| PARAM_VALUE | 2 | buf | 1-u64max |
| PARAM_VALUE | 3 | port_num | 0 |
| PARAM_VALUE | 4 | read_id | 0 |
| CAPPED_DATA | 2 | buf | 1 |
| DATA_SOURCE | 0 | dev | $0 |
| DATA_SOURCE | 1 | attr | $1 |
| DATA_SOURCE | 2 | buf | $2 |
| RX_PATH | |||
| TASK_NOT_RUNNING | |||
| LOCK2 | &of->mutex | ||
| HALF_LOCKED2 | &of->prealloc_mutex | ||
| HALF_LOCKED2 | &pool->lock | ||
| TYPE_LOCK | (struct kernfs_open_file)->mutex |
drivers/usb/misc/cypress_cy7c63.c port1_show() -> read_port()
| Type | Parameter | Key | Value |
|---|---|---|---|
| PARAM_VALUE | 1 | attr | 5250544502004584448 |
| PARAM_VALUE | 1 | attr->attr | 6315090777334652928 |
| PARAM_VALUE | 1 | attr->show | 1-u64max |
| PARAM_VALUE | 2 | buf | 1-u64max |
| PARAM_VALUE | 3 | port_num | 1 |
| PARAM_VALUE | 4 | read_id | 2 |
| CAPPED_DATA | 2 | buf | 1 |
| DATA_SOURCE | 0 | dev | $0 |
| DATA_SOURCE | 1 | attr | $1 |
| DATA_SOURCE | 2 | buf | $2 |
| RX_PATH | |||
| TASK_NOT_RUNNING | |||
| LOCK2 | &of->mutex | ||
| HALF_LOCKED2 | &of->prealloc_mutex | ||
| HALF_LOCKED2 | &pool->lock | ||
| TYPE_LOCK | (struct kernfs_open_file)->mutex |
fs/read_write.c vfs_read() -> (struct file_operations)->read()
| Type | Parameter | Key | Value |
|---|---|---|---|
| PARAM_VALUE | 0 | dev | 4096-ptr_max |
| PARAM_VALUE | 0 | dev->f_op | 4096-ptr_max |
| PARAM_VALUE | 0 | dev->f_op->read | 1-u64max |
| PARAM_VALUE | 2 | buf | 0-1000000000,2147479552 |
| PARAM_VALUE | 3 | *port_num | 0-1000000000 |
| BUF_SIZE | 3 | port_num | (-1),8 |
| BUF_SIZE | 3 | port_num | (-1),8 |
| CAPPED_DATA | 1 | attr | 1 |
| DATA_SOURCE | 0 | dev | $0 |
| DATA_SOURCE | 1 | attr | $1 |
| DATA_SOURCE | 2 | buf | $2 [m] |
| DATA_SOURCE | 3 | port_num | $3 |
| FUZZY_MAX | 2 | buf | 2147479552 |
| CONTAINER | 0 | -24-80+0 | $(-1) |
| BIT_INFO | 0 | dev->f_mode | 0x20001,0xffffffff |
| USER_DATA | 1 | attr | 0-u64max[c] |
| USER_DATA | 2 | buf | 0-1000000000 |
| USER_DATA | 3 | *port_num | 0-1000000000 |
| USER_PTR | 3 | port_num |