openkylin
/
linux
mirror of https://gitee.com/openkylin/linux.git
9
0
Fork 0
Code Issues Projects Releases Wiki Activity

ide-cd: move lba_to_msf() and msf_to_lba() to <linux/cdrom.h> 

* Move lba_to_msf() and msf_to_lba() to <linux/cdrom.h>
  (use 'u8' type instead of 'byte' while at it).

* Remove msf_to_lba() copy from drivers/cdrom/cdrom.c.

Acked-by: Jens Axboe <jens.axboe@oracle.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
This commit is contained in:
Bartlomiej Zolnierkiewicz 2008-02-01 23:09:24 +01:00
parent 5c68429dfe
commit a1bb9457f0
3 changed files with 14 additions and 24 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
drivers/cdrom/cdrom.c
View File

@ -2787,12 +2787,6 @@ int cdrom_ioctl(struct file * file, struct cdrom_device_info *cdi,
return -ENOSYS;
}
static inline
int msf_to_lba(char m, char s, char f)
{
return (((m * CD_SECS) + s) * CD_FRAMES + f) - CD_MSF_OFFSET;
}
/*
* Required when we need to use READ_10 to issue other than 2048 block
* reads

18
drivers/ide/ide-cd.c
View File

@ -1664,24 +1664,6 @@ void msf_from_bcd (struct atapi_msf *msf)
msf->frame = BCD2BIN(msf->frame);
}
static inline
void lba_to_msf (int lba, byte *m, byte *s, byte *f)
{
lba += CD_MSF_OFFSET;
lba &= 0xffffff; /* negative lbas use only 24 bits */
*m = lba / (CD_SECS * CD_FRAMES);
lba %= (CD_SECS * CD_FRAMES);
*s = lba / CD_FRAMES;
*f = lba % CD_FRAMES;
}
static inline
int msf_to_lba (byte m, byte s, byte f)
{
return (((m * CD_SECS) + s) * CD_FRAMES + f) - CD_MSF_OFFSET;
}
static int cdrom_check_status(ide_drive_t *drive, struct request_sense *sense)
{
struct request req;

14
include/linux/cdrom.h
View File

@ -1187,6 +1187,20 @@ struct media_event_desc {
extern int cdrom_get_media_event(struct cdrom_device_info *cdi, struct media_event_desc *med);
static inline void lba_to_msf(int lba, u8 *m, u8 *s, u8 *f)
{
lba += CD_MSF_OFFSET;
lba &= 0xffffff; /* negative lbas use only 24 bits */
*m = lba / (CD_SECS * CD_FRAMES);
lba %= (CD_SECS * CD_FRAMES);
*s = lba / CD_FRAMES;
*f = lba % CD_FRAMES;
}
static inline int msf_to_lba(u8 m, u8 s, u8 f)
{
return (((m * CD_SECS) + s) * CD_FRAMES + f) - CD_MSF_OFFSET;
}
#endif /* End of kernel only stuff */
#endif /* _LINUX_CDROM_H */