target: Remove max_sectors device attribute for modern se_task less code

[firefly-linux-kernel-4.4.55.git] / drivers / target / target_core_device.c

diff --git a/drivers/target/target_core_device.c b/drivers/target/target_core_device.c
index e621350feebc32503b8540d5300ef309ebec19a2..5ad972856a8d58ccb25b763a07239a39a12a57ed 100644 (file)
--- a/drivers/target/target_core_device.c
+++ b/drivers/target/target_core_device.c
@@ -876,15 +876,12 @@ void se_dev_set_default_attribs(
        dev->se_sub_dev->se_dev_attrib.hw_block_size = limits->logical_block_size;
        dev->se_sub_dev->se_dev_attrib.block_size = limits->logical_block_size;
        /*
-        * max_sectors is based on subsystem plugin dependent requirements.
+        * Align max_hw_sectors down to PAGE_SIZE I/O transfers
         */
-       dev->se_sub_dev->se_dev_attrib.hw_max_sectors = limits->max_hw_sectors;
-       /*
-        * Align max_sectors down to PAGE_SIZE to follow transport_allocate_data_tasks()
-        */
-       limits->max_sectors = se_dev_align_max_sectors(limits->max_sectors,
+       limits->max_hw_sectors = se_dev_align_max_sectors(limits->max_hw_sectors,
                                                limits->logical_block_size);
-       dev->se_sub_dev->se_dev_attrib.max_sectors = limits->max_sectors;
+       dev->se_sub_dev->se_dev_attrib.hw_max_sectors = limits->max_hw_sectors;
+
        /*
         * Set fabric_max_sectors, which is reported in block limits
         * VPD page (B0h).
@@ -1168,64 +1165,6 @@ int se_dev_set_queue_depth(struct se_device *dev, u32 queue_depth)
        return 0;
 }
 
-int se_dev_set_max_sectors(struct se_device *dev, u32 max_sectors)
-{
-       int force = 0; /* Force setting for VDEVS */
-
-       if (atomic_read(&dev->dev_export_obj.obj_access_count)) {
-               pr_err("dev[%p]: Unable to change SE Device"
-                       " max_sectors while dev_export_obj: %d count exists\n",
-                       dev, atomic_read(&dev->dev_export_obj.obj_access_count));
-               return -EINVAL;
-       }
-       if (!max_sectors) {
-               pr_err("dev[%p]: Illegal ZERO value for"
-                       " max_sectors\n", dev);
-               return -EINVAL;
-       }
-       if (max_sectors < DA_STATUS_MAX_SECTORS_MIN) {
-               pr_err("dev[%p]: Passed max_sectors: %u less than"
-                       " DA_STATUS_MAX_SECTORS_MIN: %u\n", dev, max_sectors,
-                               DA_STATUS_MAX_SECTORS_MIN);
-               return -EINVAL;
-       }
-       if (dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV) {
-               if (max_sectors > dev->se_sub_dev->se_dev_attrib.hw_max_sectors) {
-                       pr_err("dev[%p]: Passed max_sectors: %u"
-                               " greater than TCM/SE_Device max_sectors:"
-                               " %u\n", dev, max_sectors,
-                               dev->se_sub_dev->se_dev_attrib.hw_max_sectors);
-                        return -EINVAL;
-               }
-       } else {
-               if (!force && (max_sectors >
-                                dev->se_sub_dev->se_dev_attrib.hw_max_sectors)) {
-                       pr_err("dev[%p]: Passed max_sectors: %u"
-                               " greater than TCM/SE_Device max_sectors"
-                               ": %u, use force=1 to override.\n", dev,
-                               max_sectors, dev->se_sub_dev->se_dev_attrib.hw_max_sectors);
-                       return -EINVAL;
-               }
-               if (max_sectors > DA_STATUS_MAX_SECTORS_MAX) {
-                       pr_err("dev[%p]: Passed max_sectors: %u"
-                               " greater than DA_STATUS_MAX_SECTORS_MAX:"
-                               " %u\n", dev, max_sectors,
-                               DA_STATUS_MAX_SECTORS_MAX);
-                       return -EINVAL;
-               }
-       }
-       /*
-        * Align max_sectors down to PAGE_SIZE to follow transport_allocate_data_tasks()
-        */
-       max_sectors = se_dev_align_max_sectors(max_sectors,
-                               dev->se_sub_dev->se_dev_attrib.block_size);
-
-       dev->se_sub_dev->se_dev_attrib.max_sectors = max_sectors;
-       pr_debug("dev[%p]: SE Device max_sectors changed to %u\n",
-                       dev, max_sectors);
-       return 0;
-}
-
 int se_dev_set_fabric_max_sectors(struct se_device *dev, u32 fabric_max_sectors)
 {
        if (atomic_read(&dev->dev_export_obj.obj_access_count)) {