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scsi: libsas: add transport class for ATA devices

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Now ata devices attached with sas controller do not have transport
class, so that we can not see any information of these ata devices in
/sys/class/ata_port(or ata_link or ata_device).

Add transport class for the ata devices attached with sas controller.
The /sys/class directory will show the infomation of the ata devices
as follows:

localhost:/sys/class # ls ata*
ata_device:
dev1.0  dev2.0

ata_link:
link1  link2

ata_port:
ata1  ata2

No functional change of the device scanning and io path. The ata
transport class was deleted when destroying the sas devices.

Signed-off-by: Jason Yan <[email protected]>
CC: Dan Williams <[email protected]>
CC: Tejun Heo <[email protected]>
Acked-by: Tejun Heo <[email protected]>
Signed-off-by: Martin K. Petersen <[email protected]>
This commit is contained in:
Jason Yan 2018-03-26 17:27:41 +08:00 • committed by Martin K. Petersen
commit b6240a4df0
4 changed files with 20 additions and 0 deletions
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12
drivers/ata/libata-scsi.c
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@ -5051,6 +5051,18 @@ int ata_sas_port_init(struct ata_port *ap)
}
EXPORT_SYMBOL_GPL(ata_sas_port_init);
int ata_sas_tport_add(struct device *parent, struct ata_port *ap)
{
return ata_tport_add(parent, ap);
}
EXPORT_SYMBOL_GPL(ata_sas_tport_add);
void ata_sas_tport_delete(struct ata_port *ap)
{
ata_tport_delete(ap);
}
EXPORT_SYMBOL_GPL(ata_sas_tport_delete);
/**
* ata_sas_port_destroy - Destroy a SATA port allocated by ata_sas_port_alloc
* @ap: SATA port to destroy