diff options
| author |   vchannaiah <vanitha.channaiah@in.bosch.com> | 2016-06-29 08:18:25 -0400 |
|---|---|---|
| committer |   Jens Axboe <axboe@fb.com> | 2016-07-12 08:24:50 -0700 |
| commit | bf294e833b3e670450cdc013242d45a4d2b8d395 (patch) | |
| tree | 3e64868a26493135f75b880a84ad1e1e2184d7d8 /Documentation/ioctl | |
| parent | nvme/quirk: Add a delay before checking for adapter readiness (diff) | |
| download | linux-dev-bf294e833b3e670450cdc013242d45a4d2b8d395.tar.xz linux-dev-bf294e833b3e670450cdc013242d45a4d2b8d395.zip | |
cdrom: support read sub-channel command in LBA format
userspace application can send READ_SUB_CHANNEL command with time bit
enabled and disabled. The time bit allows selection of address reporting
format. If the time bit is disabled the response is in logical block
address(CDROM_LBA) format, represented as a 32-bit integer with ms-byte
first. If the time bit is enabled the response is in time format i.e.,
minutes, second, frame (CDROM_MSF) format.
Signed-off-by: vchannaiah <vanitha.channaiah@in.bosch.com>
Signed-off-by: Mahendran Kuppusamy <mahendran.kuppusamy@in.bosch.com>
[veeraiyan.chidambaram@in.bosch.com: updated Documentation/ioctl/cdrom.txt]
Signed-off-by: Veeraiyan Chidambaram <veeraiyan.chidambaram@in.bosch.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'Documentation/ioctl')
| -rw-r--r-- | Documentation/ioctl/cdrom.txt | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/Documentation/ioctl/cdrom.txt b/Documentation/ioctl/cdrom.txt index 59df81c8da2b..a4d62a9d6771 100644 --- a/Documentation/ioctl/cdrom.txt +++ b/Documentation/ioctl/cdrom.txt @@ -340,7 +340,8 @@ CDROMSUBCHNL Read subchannel data (struct cdrom_subchnl) EINVAL format not CDROM_MSF or CDROM_LBA notes: - Format is converted to CDROM_MSF on return + Format is converted to CDROM_MSF or CDROM_LBA + as per user request on return |