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| author | Tejun Heo <htejun@gmail.com> | 2006-05-31 18:27:40 +0900 |
|---|---|---|
| committer | Tejun Heo <htejun@gmail.com> | 2006-05-31 18:27:40 +0900 |
| commit | 3edebac41bab7e146578ad9e723ee7fff71c99c0 (patch) | |
| tree | c5f1276f7c0e93b51ad67b12e241b37c05f4f38a | |
| parent | 5a04bf4befa8bffa012eedc3a0903c158b9131a9 (diff) | |
| download | linux-3.10-3edebac41bab7e146578ad9e723ee7fff71c99c0.tar.gz linux-3.10-3edebac41bab7e146578ad9e723ee7fff71c99c0.tar.bz2 linux-3.10-3edebac41bab7e146578ad9e723ee7fff71c99c0.zip | |
[PATCH] libata-hp-prep: store attached SCSI device
Add device persistent field dev->sdev and store the attached SCSI
device. With hotplug, libata needs to know the attached SCSI device
to offline and detach it, but scsi_device_lookup() cannot be used
because libata will reuse SCSI ID numbers - dead but not gone devices
(due to zombie opens, etc...) interfere with the lookup.
dev->sdev doesn't hold reference to the SCSI device. It's cleared
when the SCSI device goes away.
Signed-off-by: Tejun Heo <htejun@gmail.com>
| -rw-r--r-- | drivers/scsi/libata-scsi.c | 14 | ||||
| -rw-r--r-- | include/linux/libata.h | 1 |
2 files changed, 11 insertions, 4 deletions
diff --git a/drivers/scsi/libata-scsi.c b/drivers/scsi/libata-scsi.c index 05090768d9a..da9689b7082 100644 --- a/drivers/scsi/libata-scsi.c +++ b/drivers/scsi/libata-scsi.c @@ -2743,16 +2743,22 @@ void ata_scsi_simulate(struct ata_device *dev, struct scsi_cmnd *cmd, void ata_scsi_scan_host(struct ata_port *ap) { - struct ata_device *dev; unsigned int i; if (ap->flags & ATA_FLAG_DISABLED) return; for (i = 0; i < ATA_MAX_DEVICES; i++) { - dev = &ap->device[i]; + struct ata_device *dev = &ap->device[i]; + struct scsi_device *sdev; + + if (!ata_dev_enabled(dev) || dev->sdev) + continue; - if (ata_dev_enabled(dev)) - scsi_scan_target(&ap->host->shost_gendev, 0, i, 0, 0); + sdev = __scsi_add_device(ap->host, 0, i, 0, NULL); + if (!IS_ERR(sdev)) { + dev->sdev = sdev; + scsi_device_put(sdev); + } } } diff --git a/include/linux/libata.h b/include/linux/libata.h index 10dc235ad8b..c0513c75275 100644 --- a/include/linux/libata.h +++ b/include/linux/libata.h @@ -413,6 +413,7 @@ struct ata_device { struct ata_port *ap; unsigned int devno; /* 0 or 1 */ unsigned long flags; /* ATA_DFLAG_xxx */ + struct scsi_device *sdev; /* attached SCSI device */ /* n_sector is used as CLEAR_OFFSET, read comment above CLEAR_OFFSET */ u64 n_sectors; /* size of device, if ATA */ unsigned int class; /* ATA_DEV_xxx */ |