Hi Marcelo,
this a backport of my patch that went into 2.6.10.
---
cdrom_read_toc (ide-cd.c) always reads the TOC using MSF format. If the
last session of the disk starts beyond block 1152000 (LBA) there's an
overflow in the MSF format and kernel complains:
Unable to identify CD-ROM format.
So read the multi-session TOC in LBA format in order to avoid an
overflow in MSF format with multisession DVDs.
Signed-off-by: Luca Tettamanti <[EMAIL PROTECTED]>
--- a/drivers/ide/ide-cd.c 2005-01-08 21:53:03.000000000 +0100
+++ b/drivers/ide/ide-cd.c 2005-01-08 21:53:08.000000000 +0100
@@ -2206,25 +2206,31 @@
/* Read the multisession information. */
if (toc->hdr.first_track != CDROM_LEADOUT) {
/* Read the multisession information. */
- stat = cdrom_read_tocentry(drive, 0, 1, 1, (char *)&ms_tmp,
+ stat = cdrom_read_tocentry(drive, 0, 0, 1, (char *)&ms_tmp,
sizeof(ms_tmp), sense);
if (stat) return stat;
+
+ toc->last_session_lba = be32_to_cpu(ms_tmp.ent.addr.lba);
} else {
- ms_tmp.ent.addr.msf.minute = 0;
- ms_tmp.ent.addr.msf.second = 2;
- ms_tmp.ent.addr.msf.frame = 0;
ms_tmp.hdr.first_track = ms_tmp.hdr.last_track = CDROM_LEADOUT;
+ toc->last_session_lba = msf_to_lba(0, 2, 0); /* 0m 2s 0f */
}
#if ! STANDARD_ATAPI
- if (CDROM_CONFIG_FLAGS(drive)->tocaddr_as_bcd)
+ if (CDROM_CONFIG_FLAGS(drive)->tocaddr_as_bcd) {
+ /* Re-read multisession information using MSF format */
+ stat = cdrom_read_tocentry(drive, 0, 1, 1, (char *)&ms_tmp,
+ sizeof(ms_tmp), sense);
+ if (stat)
+ return stat;
+
msf_from_bcd (&ms_tmp.ent.addr.msf);
+ toc->last_session_lba = msf_to_lba(ms_tmp.ent.addr.msf.minute,
+ ms_tmp.ent.addr.msf.second,
+ ms_tmp.ent.addr.msf.frame);
+ }
#endif /* not STANDARD_ATAPI */
- toc->last_session_lba = msf_to_lba (ms_tmp.ent.addr.msf.minute,
- ms_tmp.ent.addr.msf.second,
- ms_tmp.ent.addr.msf.frame);
-
toc->xa_flag = (ms_tmp.hdr.first_track != ms_tmp.hdr.last_track);
/* Now try to get the total cdrom capacity. */
Luca
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