diff options
Diffstat (limited to 'drivers/ata/libata-core.c')
| -rw-r--r-- | drivers/ata/libata-core.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c index fa74b57ee52e..b2bd7c499653 100644 --- a/drivers/ata/libata-core.c +++ b/drivers/ata/libata-core.c @@ -66,6 +66,7 @@ #include <scsi/scsi_host.h> #include <linux/libata.h> #include <asm/byteorder.h> +#include <asm/unaligned.h> #include <linux/cdrom.h> #include <linux/ratelimit.h> #include <linux/pm_runtime.h> @@ -2083,7 +2084,23 @@ static void ata_dev_config_ncq_send_recv(struct ata_device *dev) { struct ata_port *ap = dev->link->ap; unsigned int err_mask; + int log_index = ATA_LOG_NCQ_SEND_RECV * 2; + u16 log_pages; + err_mask = ata_read_log_page(dev, ATA_LOG_DIRECTORY, + 0, ap->sector_buf, 1); + if (err_mask) { + ata_dev_dbg(dev, + "failed to get Log Directory Emask 0x%x\n", + err_mask); + return; + } + log_pages = get_unaligned_le16(&ap->sector_buf[log_index]); + if (!log_pages) { + ata_dev_warn(dev, + "NCQ Send/Recv Log not supported\n"); + return; + } err_mask = ata_read_log_page(dev, ATA_LOG_NCQ_SEND_RECV, 0, ap->sector_buf, 1); if (err_mask) { |