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| author | James Bottomley <James.Bottomley@HansenPartnership.com> | 2008-01-05 10:39:51 -0600 |
|---|---|---|
| committer | James Bottomley <James.Bottomley@HansenPartnership.com> | 2008-01-11 18:29:17 -0600 |
| commit | 210ba1d1724f5c4ed87a2ab1a21ca861a915f734 (patch) | |
| tree | 4b25acf59b91e2be49faf34507f3d9eeebff76a0 /drivers | |
| parent | 32e8ae36b8f80372015b88b63c4358a376c9af0f (diff) | |
| download | blackbird-obmc-linux-210ba1d1724f5c4ed87a2ab1a21ca861a915f734.tar.gz blackbird-obmc-linux-210ba1d1724f5c4ed87a2ab1a21ca861a915f734.zip | |
[SCSI] sr: update to follow tray status correctly
Based on an original patch from: David Martin <tasio@tasio.net>
When trying to get the drive status via ioctl CDROM_DRIVE_STATUS, with
no disk it gives CDS_TRAY_OPEN even if the tray is closed.
ioctl works as expected with ide-cd driver.
Gentoo bug report: http://bugs.gentoo.org/show_bug.cgi?id=196879
Cc: Maarten Bressers <mbres@gentoo.org>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/scsi/sr.c | 2 | ||||
| -rw-r--r-- | drivers/scsi/sr.h | 3 | ||||
| -rw-r--r-- | drivers/scsi/sr_ioctl.c | 48 |
3 files changed, 37 insertions, 16 deletions
diff --git a/drivers/scsi/sr.c b/drivers/scsi/sr.c index 896be4ab285d..1fcee16fa36d 100644 --- a/drivers/scsi/sr.c +++ b/drivers/scsi/sr.c @@ -67,8 +67,6 @@ MODULE_ALIAS_SCSI_DEVICE(TYPE_WORM); #define SR_DISKS 256 -#define MAX_RETRIES 3 -#define SR_TIMEOUT (30 * HZ) #define SR_CAPABILITIES \ (CDC_CLOSE_TRAY|CDC_OPEN_TRAY|CDC_LOCK|CDC_SELECT_SPEED| \ CDC_SELECT_DISC|CDC_MULTI_SESSION|CDC_MCN|CDC_MEDIA_CHANGED| \ diff --git a/drivers/scsi/sr.h b/drivers/scsi/sr.h index 0d04e2878c9d..81fbc0b78a52 100644 --- a/drivers/scsi/sr.h +++ b/drivers/scsi/sr.h @@ -20,6 +20,9 @@ #include <linux/genhd.h> #include <linux/kref.h> +#define MAX_RETRIES 3 +#define SR_TIMEOUT (30 * HZ) + struct scsi_device; /* The CDROM is fairly slow, so we need a little extra time */ diff --git a/drivers/scsi/sr_ioctl.c b/drivers/scsi/sr_ioctl.c index e1589f91706a..d5cebff1d646 100644 --- a/drivers/scsi/sr_ioctl.c +++ b/drivers/scsi/sr_ioctl.c @@ -275,18 +275,6 @@ int sr_do_ioctl(Scsi_CD *cd, struct packet_command *cgc) /* ---------------------------------------------------------------------- */ /* interface to cdrom.c */ -static int test_unit_ready(Scsi_CD *cd) -{ - struct packet_command cgc; - - memset(&cgc, 0, sizeof(struct packet_command)); - cgc.cmd[0] = GPCMD_TEST_UNIT_READY; - cgc.quiet = 1; - cgc.data_direction = DMA_NONE; - cgc.timeout = IOCTL_TIMEOUT; - return sr_do_ioctl(cd, &cgc); -} - int sr_tray_move(struct cdrom_device_info *cdi, int pos) { Scsi_CD *cd = cdi->handle; @@ -310,14 +298,46 @@ int sr_lock_door(struct cdrom_device_info *cdi, int lock) int sr_drive_status(struct cdrom_device_info *cdi, int slot) { + struct scsi_cd *cd = cdi->handle; + struct scsi_sense_hdr sshdr; + struct media_event_desc med; + if (CDSL_CURRENT != slot) { /* we have no changer support */ return -EINVAL; } - if (0 == test_unit_ready(cdi->handle)) + if (0 == scsi_test_unit_ready(cd->device, SR_TIMEOUT, MAX_RETRIES, + &sshdr)) return CDS_DISC_OK; - return CDS_TRAY_OPEN; + if (!cdrom_get_media_event(cdi, &med)) { + if (med.media_present) + return CDS_DISC_OK; + else if (med.door_open) + return CDS_TRAY_OPEN; + else + return CDS_NO_DISC; + } + + /* + * 0x04 is format in progress .. but there must be a disc present! + */ + if (sshdr.sense_key == NOT_READY && sshdr.asc == 0x04) + return CDS_DISC_OK; + + /* + * If not using Mt Fuji extended media tray reports, + * just return TRAY_OPEN since ATAPI doesn't provide + * any other way to detect this... + */ + if (scsi_sense_valid(&sshdr) && + /* 0x3a is medium not present */ + sshdr.asc == 0x3a) + return CDS_NO_DISC; + else + return CDS_TRAY_OPEN; + + return CDS_DRIVE_NOT_READY; } int sr_disk_status(struct cdrom_device_info *cdi) |
