lincan/src/finish.c

   1 #include "../include/can.h"
   2 #include "../include/can_sysdep.h"
   3 #include "../include/main.h"
   4 #include "../include/devcommon.h"
   5 #include "../include/finish.h"
   6 #include "../include/setup.h"
   7
   8
   9 /**
  10  * msgobj_done - destroys one CAN message object
  11  * @obj: pointer to CAN message object structure
  12  */
  13 void msgobj_done(struct msgobj_t *obj)
  14 {
  15         int delayed=0;
  16         if(obj->qends) {
  17                 delayed=canqueue_ends_done_chip(obj->qends);
  18                 if(delayed < 0)
  19                         CANMSG("msgobj_done: problem with chip queue ends\n");
  20         }
  21
  22         if((obj->hostchip) && (obj->object>0)) {
  23                 if(obj->hostchip->msgobj[obj->object-1] == obj)
  24                         obj->hostchip->msgobj[obj->object-1]=NULL;
  25                 else
  26                         CANMSG("msgobj_done: not registered in the chip_t\n");
  27                 obj->hostchip=NULL;
  28         }
  29
  30         if((obj->minor>=0)) {
  31                 if(objects_p[obj->minor] == obj)
  32                         objects_p[obj->minor] = NULL;
  33                 else
  34                         CANMSG("msgobj_done: not registered as minor\n");
  35         }
  36
  37         del_timer_sync(&obj->tx_timeout);
  38
  39         if(obj->qends) {
  40                 /*delayed free could be required there in the future,
  41                   actual use patter cannot generate such situation*/
  42                 if(!delayed) {
  43                         can_checked_free(obj->qends);
  44                 }
  45         }
  46         obj->qends=NULL;
  47 }
  48
  49
  50 /**
  51  * canchip_done - destroys one CAN chip representation
  52  * @chip: pointer to CAN chip structure
  53  */
  54 void canchip_done(struct chip_t *chip)
  55 {
  56
  57         int i;
  58         struct msgobj_t *obj;
  59
  60         if((chip->hostdevice) && (chip->chip_idx>=0)) {
  61                 if(chip->hostdevice->chip[chip->chip_idx] == chip)
  62                         chip->hostdevice->chip[chip->chip_idx] = NULL;
  63                 else
  64                         CANMSG("canchip_done: not registered in hostdevice\n");
  65         }
  66
  67         can_chip_free_irq(chip);
  68
  69         can_synchronize_irq(chip->chip_irq);
  70
  71         for(i=0; i<chip->max_objects; i++){
  72                 if((obj=chip->msgobj[i])==NULL)
  73                         continue;
  74                 msgobj_done(obj);
  75                 can_checked_free(obj);
  76         }
  77
  78         can_checked_free(chip->chipspecops);
  79         chip->chipspecops=NULL;
  80
  81 }
  82
  83 /**
  84  * candevice_done - destroys representation of one CAN device/board
  85  * @candev: pointer to CAN device/board structure
  86  */
  87 void candevice_done(struct candevice_t *candev)
  88 {
  89         int i;
  90         struct chip_t *chip;
  91
  92         for(i=0; i<candev->nr_all_chips; i++){
  93                 if((chip=candev->chip[i])==NULL)
  94                         continue;
  95                 canchip_done(chip);
  96                 can_checked_free(chip);
  97
  98         }
  99         if(candev->flags & CANDEV_IO_RESERVED) {
 100                 candev->hwspecops->release_io(candev);
 101                 candev->flags &= ~CANDEV_IO_RESERVED;
 102         }
 103         can_checked_free(candev->hwspecops);
 104         candev->hwspecops=NULL;
 105 }
 106
 107 /**
 108  * candevice_done - destroys representation of all CAN devices/boards
 109  * @canhw: pointer to the root of all CAN hardware representation
 110  */
 111 void canhardware_done(struct canhardware_t *canhw)
 112 {
 113         int i;
 114         struct candevice_t *candev;
 115
 116         for(i=0; i<canhw->nr_boards; i++){
 117                 if((candev=canhw->candevice[i])==NULL)
 118                         continue;
 119                 candevice_done(candev);
 120                 can_checked_free(candev);
 121         }
 122
 123 }