From efe205a320f24c4fe4af18c0cff2ffb07091951c Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Sun, 4 Jun 2017 14:42:21 +0200 Subject: [PATCH] libata: factor out a ata_log_supported helper Signed-off-by: Christoph Hellwig Signed-off-by: Tejun Heo --- drivers/ata/libata-core.c | 59 +++++++++++---------------------------- 1 file changed, 16 insertions(+), 43 deletions(-) diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c index f84419f0d209..e79085809791 100644 --- a/drivers/ata/libata-core.c +++ b/drivers/ata/libata-core.c @@ -2111,6 +2111,15 @@ retry: return err_mask; } +static bool ata_log_supported(struct ata_device *dev, u8 log) +{ + struct ata_port *ap = dev->link->ap; + + if (ata_read_log_page(dev, ATA_LOG_DIRECTORY, 0, ap->sector_buf, 1)) + return false; + return get_unaligned_le16(&ap->sector_buf[log * 2]) ? true : false; +} + static int ata_do_link_spd_horkage(struct ata_device *dev) { struct ata_link *plink = ata_dev_phys_link(dev); @@ -2158,21 +2167,9 @@ 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"); + if (!ata_log_supported(dev, ATA_LOG_NCQ_SEND_RECV)) { + ata_dev_warn(dev, "NCQ Send/Recv Log not supported\n"); return; } err_mask = ata_read_log_page(dev, ATA_LOG_NCQ_SEND_RECV, @@ -2199,19 +2196,8 @@ static void ata_dev_config_ncq_non_data(struct ata_device *dev) { struct ata_port *ap = dev->link->ap; unsigned int err_mask; - int log_index = ATA_LOG_NCQ_NON_DATA * 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) { + if (!ata_log_supported(dev, ATA_LOG_NCQ_NON_DATA)) { ata_dev_warn(dev, "NCQ Send/Recv Log not supported\n"); return; @@ -2339,7 +2325,7 @@ static void ata_dev_config_zac(struct ata_device *dev) struct ata_port *ap = dev->link->ap; unsigned int err_mask; u8 *identify_buf = ap->sector_buf; - int log_index = ATA_LOG_SATA_ID_DEV_DATA * 2, i, found = 0; + int i, found = 0; u16 log_pages; dev->zac_zones_optimal_open = U32_MAX; @@ -2360,24 +2346,11 @@ static void ata_dev_config_zac(struct ata_device *dev) if (!(dev->flags & ATA_DFLAG_ZAC)) return; - /* - * Read Log Directory to figure out if IDENTIFY DEVICE log - * is supported. - */ - err_mask = ata_read_log_page(dev, ATA_LOG_DIRECTORY, - 0, ap->sector_buf, 1); - if (err_mask) { - ata_dev_info(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 == 0) { - ata_dev_warn(dev, - "ATA Identify Device Log not supported\n"); + if (!ata_log_supported(dev, ATA_LOG_SATA_ID_DEV_DATA)) { + ata_dev_warn(dev, "ATA Identify Device Log not supported\n"); return; } + /* * Read IDENTIFY DEVICE data log, page 0, to figure out * if page 9 is supported. -- 2.20.1