From 817ba283acf2d7b5aa073b96fd989f336fcff72a Mon Sep 17 00:00:00 2001 From: Wolfgang Wiedmeyer Date: Fri, 23 Oct 2015 05:50:33 +0200 Subject: merge more stuff from 3.2.72 --- drivers/ata/libata-scsi.c | 86 +++++++++++++++++++++++++++++++---------------- 1 file changed, 57 insertions(+), 29 deletions(-) (limited to 'drivers/ata/libata-scsi.c') diff --git a/drivers/ata/libata-scsi.c b/drivers/ata/libata-scsi.c index 3b42a5d..0ac7a5e 100644 --- a/drivers/ata/libata-scsi.c +++ b/drivers/ata/libata-scsi.c @@ -37,6 +37,7 @@ #include #include #include +#include #include #include #include @@ -110,12 +111,14 @@ static const char *ata_lpm_policy_names[] = { [ATA_LPM_MIN_POWER] = "min_power", }; -static ssize_t ata_scsi_lpm_store(struct device *dev, +static ssize_t ata_scsi_lpm_store(struct device *device, struct device_attribute *attr, const char *buf, size_t count) { - struct Scsi_Host *shost = class_to_shost(dev); + struct Scsi_Host *shost = class_to_shost(device); struct ata_port *ap = ata_shost_to_port(shost); + struct ata_link *link; + struct ata_device *dev; enum ata_lpm_policy policy; unsigned long flags; @@ -131,10 +134,20 @@ static ssize_t ata_scsi_lpm_store(struct device *dev, return -EINVAL; spin_lock_irqsave(ap->lock, flags); + + ata_for_each_link(link, ap, EDGE) { + ata_for_each_dev(dev, &ap->link, ENABLED) { + if (dev->horkage & ATA_HORKAGE_NOLPM) { + count = -EOPNOTSUPP; + goto out_unlock; + } + } + } + ap->target_lpm_policy = policy; ata_port_schedule_eh(ap); +out_unlock: spin_unlock_irqrestore(ap->lock, flags); - return count; } @@ -1110,8 +1123,7 @@ static int ata_scsi_dev_config(struct scsi_device *sdev, /* configure draining */ buf = kmalloc(ATAPI_MAX_DRAIN, q->bounce_gfp | GFP_KERNEL); if (!buf) { - ata_dev_printk(dev, KERN_ERR, - "drain buffer allocation failed\n"); + ata_dev_err(dev, "drain buffer allocation failed\n"); return -ENOMEM; } @@ -1129,7 +1141,7 @@ static int ata_scsi_dev_config(struct scsi_device *sdev, * IDENTIFY_PACKET is executed as ATA_PROT_PIO. */ if (sdev->sector_size > PAGE_SIZE) - ata_dev_printk(dev, KERN_WARNING, + ata_dev_warn(dev, "sector_size=%u > PAGE_SIZE, PIO may malfunction\n", sdev->sector_size); @@ -1218,25 +1230,19 @@ void ata_scsi_slave_destroy(struct scsi_device *sdev) } /** - * ata_scsi_change_queue_depth - SCSI callback for queue depth config + * __ata_change_queue_depth - helper for ata_scsi_change_queue_depth + * @ap: ATA port to which the device change the queue depth * @sdev: SCSI device to configure queue depth for * @queue_depth: new queue depth * @reason: calling context * - * This is libata standard hostt->change_queue_depth callback. - * SCSI will call into this callback when user tries to set queue - * depth via sysfs. - * - * LOCKING: - * SCSI layer (we don't care) + * libsas and libata have different approaches for associating a sdev to + * its ata_port. * - * RETURNS: - * Newly configured queue depth. */ -int ata_scsi_change_queue_depth(struct scsi_device *sdev, int queue_depth, - int reason) +int __ata_change_queue_depth(struct ata_port *ap, struct scsi_device *sdev, + int queue_depth, int reason) { - struct ata_port *ap = ata_shost_to_port(sdev->host); struct ata_device *dev; unsigned long flags; @@ -1272,6 +1278,30 @@ int ata_scsi_change_queue_depth(struct scsi_device *sdev, int queue_depth, } /** + * ata_scsi_change_queue_depth - SCSI callback for queue depth config + * @sdev: SCSI device to configure queue depth for + * @queue_depth: new queue depth + * @reason: calling context + * + * This is libata standard hostt->change_queue_depth callback. + * SCSI will call into this callback when user tries to set queue + * depth via sysfs. + * + * LOCKING: + * SCSI layer (we don't care) + * + * RETURNS: + * Newly configured queue depth. + */ +int ata_scsi_change_queue_depth(struct scsi_device *sdev, int queue_depth, + int reason) +{ + struct ata_port *ap = ata_shost_to_port(sdev->host); + + return __ata_change_queue_depth(ap, sdev, queue_depth, reason); +} + +/** * ata_scsi_start_stop_xlat - Translate SCSI START STOP UNIT command * @qc: Storage for translated ATA taskfile * @@ -1786,8 +1816,7 @@ static int ata_scsi_translate(struct ata_device *dev, struct scsi_cmnd *cmd, if (cmd->sc_data_direction == DMA_FROM_DEVICE || cmd->sc_data_direction == DMA_TO_DEVICE) { if (unlikely(scsi_bufflen(cmd) < 1)) { - ata_dev_printk(dev, KERN_WARNING, - "WARNING: zero len r/w req\n"); + ata_dev_warn(dev, "WARNING: zero len r/w req\n"); goto err_did; } @@ -2444,7 +2473,8 @@ static unsigned int ata_scsiop_read_cap(struct ata_scsi_args *args, u8 *rbuf) rbuf[14] = (lowest_aligned >> 8) & 0x3f; rbuf[15] = lowest_aligned; - if (ata_id_has_trim(args->id)) { + if (ata_id_has_trim(args->id) && + !(dev->horkage & ATA_HORKAGE_NOTRIM)) { rbuf[14] |= 0x80; /* TPE */ if (ata_id_has_zero_after_trim(args->id)) @@ -2971,9 +3001,8 @@ static unsigned int ata_scsi_pass_thru(struct ata_queued_cmd *qc) * with the cached multi_count of libata */ if (multi_count != dev->multi_count) - ata_dev_printk(dev, KERN_WARNING, - "invalid multi_count %u ignored\n", - multi_count); + ata_dev_warn(dev, "invalid multi_count %u ignored\n", + multi_count); } /* @@ -3468,9 +3497,8 @@ void ata_scsi_scan_host(struct ata_port *ap, int sync) goto repeat; } - ata_port_printk(ap, KERN_ERR, "WARNING: synchronous SCSI scan " - "failed without making any progress,\n" - " switching to async\n"); + ata_port_err(ap, + "WARNING: synchronous SCSI scan failed without making any progress, switching to async\n"); } queue_delayed_work(system_long_wq, &ap->hotplug_task, @@ -3552,8 +3580,8 @@ static void ata_scsi_remove_dev(struct ata_device *dev) mutex_unlock(&ap->scsi_host->scan_mutex); if (sdev) { - ata_dev_printk(dev, KERN_INFO, "detaching (SCSI %s)\n", - dev_name(&sdev->sdev_gendev)); + ata_dev_info(dev, "detaching (SCSI %s)\n", + dev_name(&sdev->sdev_gendev)); scsi_remove_device(sdev); scsi_device_put(sdev); -- cgit v1.1