[SCSI] target: Convert rd_build_device_space() to use errno

This patch converts rd_build_device_space() to return errno usage
for failures in rd_create_virtdevice().

Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>

diff --git a/drivers/target/target_core_rd.c b/drivers/target/target_core_rd.c
index f36094f..7837dd3 100644 (file)
--- a/drivers/target/target_core_rd.c
+++ b/drivers/target/target_core_rd.c
@@ -150,7 +150,7 @@ static int rd_build_device_space(struct rd_dev *rd_dev)
        if (rd_dev->rd_page_count <= 0) {
                printk(KERN_ERR "Illegal page count: %u for Ramdisk device\n",
                        rd_dev->rd_page_count);
-               return -1;
+               return -EINVAL;
        }
        total_sg_needed = rd_dev->rd_page_count;
 
@@ -160,7 +160,7 @@ static int rd_build_device_space(struct rd_dev *rd_dev)
        if (!(sg_table)) {
                printk(KERN_ERR "Unable to allocate memory for Ramdisk"
                        " scatterlist tables\n");
-               return -1;
+               return -ENOMEM;
        }
 
        rd_dev->sg_table_array = sg_table;
@@ -175,7 +175,7 @@ static int rd_build_device_space(struct rd_dev *rd_dev)
                if (!(sg)) {
                        printk(KERN_ERR "Unable to allocate scatterlist array"
                                " for struct rd_dev\n");
-                       return -1;
+                       return -ENOMEM;
                }
 
                sg_init_table((struct scatterlist *)&sg[0], sg_per_table);
@@ -191,7 +191,7 @@ static int rd_build_device_space(struct rd_dev *rd_dev)
                        if (!(pg)) {
                                printk(KERN_ERR "Unable to allocate scatterlist"
                                        " pages for struct rd_dev_sg_table\n");
-                               return -1;
+                               return -ENOMEM;
                        }
                        sg_assign_page(&sg[j], pg);
                        sg[j].length = PAGE_SIZE;
@@ -253,15 +253,14 @@ static struct se_device *rd_create_virtdevice(
        struct se_dev_limits dev_limits;
        struct rd_dev *rd_dev = p;
        struct rd_host *rd_host = hba->hba_ptr;
-       int dev_flags = 0, ret = -EINVAL;
+       int dev_flags = 0, ret;
        char prod[16], rev[4];
 
        memset(&dev_limits, 0, sizeof(struct se_dev_limits));
 
-       if (rd_build_device_space(rd_dev) < 0) {
-               ret = -ENOMEM;
+       ret = rd_build_device_space(rd_dev);
+       if (ret < 0)
                goto fail;
-       }
 
        snprintf(prod, 16, "RAMDISK-%s", (rd_dev->rd_direct) ? "DR" : "MCP");
        snprintf(rev, 4, "%s", (rd_dev->rd_direct) ? RD_DR_VERSION :