On 8/7/21 6:18 AM, Damien Le Moal wrote:
Currently, the only way a user can determine if a SATA device supports NCQ priority is to try to enable the use of this feature using the ncq_prio_enable sysfs device attribute. If enabling the feature fails, it is because the device does not support NCQ priority. Otherwise, the feature is enabled and indicates that the device supports NCQ priority. Improve this odd interface by introducing the read-only ncq_prio_supported sysfs device attribute to indicate if a SATA device supports NCQ priority. The value of this attribute reflects if the device flag ATA_DFLAG_NCQ_PRIO is set or cleared. Signed-off-by: Damien Le Moal <damien.lemoal@xxxxxxx> --- drivers/ata/libahci.c | 1 + drivers/ata/libata-sata.c | 24 ++++++++++++++++++++++++ include/linux/libata.h | 1 + 3 files changed, 26 insertions(+)
Reviewed-by: Hannes Reinecke <hare@xxxxxxx> Cheers, Hannes -- Dr. Hannes Reinecke Kernel Storage Architect hare@xxxxxxx +49 911 74053 688 SUSE Software Solutions GmbH, Maxfeldstr. 5, 90409 Nürnberg HRB 36809 (AG Nürnberg), Geschäftsführer: Felix Imendörffer
