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ata: expose ncq_enable_prio sysfs attribute only on NCQ capable hosts

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There is no point in exposing ncq_enable_prio sysfs attribute for
devices on PATA and non-NCQ capable SATA hosts so:

* remove dev_attr_ncq_prio_enable from ata_common_sdev_attrs[]

* add ata_ncq_sdev_attrs[]

* update ATA_NCQ_SHT() macro to use ata_ncq_sdev_attrs[]

Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Bartlomiej Zolnierkiewicz
2020-03-26 16:57:57 +01:00
committed by Jens Axboe
parent 3e1ee734ab
commit 6f09eae3b5
2 changed files with 15 additions and 4 deletions
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8
drivers/ata/libata-scsi.c
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@@ -463,11 +463,17 @@ EXPORT_SYMBOL_GPL(dev_attr_sw_activity);
struct device_attribute *ata_common_sdev_attrs[] = {
&dev_attr_unload_heads,
&dev_attr_ncq_prio_enable,
NULL
};
EXPORT_SYMBOL_GPL(ata_common_sdev_attrs);
struct device_attribute *ata_ncq_sdev_attrs[] = {
&dev_attr_unload_heads,
&dev_attr_ncq_prio_enable,
NULL
};
EXPORT_SYMBOL_GPL(ata_ncq_sdev_attrs);
/**
* ata_std_bios_param - generic bios head/sector/cylinder calculator used by sd.
* @sdev: SCSI device for which BIOS geometry is to be determined