Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit d3dd7107 authored by Bartlomiej Zolnierkiewicz's avatar Bartlomiej Zolnierkiewicz
Browse files

ide-cd: document capacity hack 



Just copy the comment from drivers/scsi/sr.c::sr_done()
(from which the capacity hack has been originated).

Cc: Borislav Petkov <petkovbb@gmail.com>
Acked-by: default avatarSergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: default avatarBartlomiej Zolnierkiewicz <bzolnier@gmail.com>
parent f38344b0

drivers/ide/ide-cd.c

+8 −0
Original line number Diff line number Diff line
@@ -194,6 +194,14 @@ static void cdrom_analyze_sense_data(ide_drive_t *drive, 
			bio_sectors = max(bio_sectors(failed_command->bio), 4U);

			sector &= ~(bio_sectors - 1);



			/*

			 * The SCSI specification allows for the value

			 * returned by READ CAPACITY to be up to 75 2K

			 * sectors past the last readable block.

			 * Therefore, if we hit a medium error within the

			 * last 75 2K sectors, we decrease the saved size

			 * value.

			 */

			if (sector < get_capacity(info->disk) &&

			    drive->probed_capacity - sector < 4 * 75)

				set_capacity(info->disk, sector);