From bf294e833b3e670450cdc013242d45a4d2b8d395 Mon Sep 17 00:00:00 2001 From: vchannaiah Date: Wed, 29 Jun 2016 08:18:25 -0400 Subject: 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 Signed-off-by: Mahendran Kuppusamy [veeraiyan.chidambaram@in.bosch.com: updated Documentation/ioctl/cdrom.txt] Signed-off-by: Veeraiyan Chidambaram Signed-off-by: Jens Axboe --- Documentation/ioctl/cdrom.txt | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'Documentation/ioctl') 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 -- cgit v1.2.3