[SCSI] hpsa: reorganize error handling in hpsa_passthru_ioctl

Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>

diff --git a/drivers/scsi/hpsa.c b/drivers/scsi/hpsa.c
index 38c8aa5e85b45bc08627d05e6353ded785cef797..a7c3d47115353a68aa8e005f4866ae1261457e58 100644 (file)
--- a/drivers/scsi/hpsa.c
+++ b/drivers/scsi/hpsa.c
@@ -2959,6 +2959,7 @@ static int hpsa_passthru_ioctl(struct ctlr_info *h, void __user *argp)
        struct CommandList *c;
        char *buff = NULL;
        union u64bit temp64;
+       int rc = 0;
 
        if (!argp)
                return -EINVAL;
@@ -2978,8 +2979,8 @@ static int hpsa_passthru_ioctl(struct ctlr_info *h, void __user *argp)
                        /* Copy the data into the buffer we created */
                        if (copy_from_user(buff, iocommand.buf,
                                iocommand.buf_size)) {
-                               kfree(buff);
-                               return -EFAULT;
+                               rc = -EFAULT;
+                               goto out_kfree;
                        }
                } else {
                        memset(buff, 0, iocommand.buf_size);
@@ -2987,8 +2988,8 @@ static int hpsa_passthru_ioctl(struct ctlr_info *h, void __user *argp)
        }
        c = cmd_special_alloc(h);
        if (c == NULL) {
-               kfree(buff);
-               return -ENOMEM;
+               rc = -ENOMEM;
+               goto out_kfree;
        }
        /* Fill in the command type */
        c->cmd_type = CMD_IOCTL_PEND;
@@ -3027,22 +3028,22 @@ static int hpsa_passthru_ioctl(struct ctlr_info *h, void __user *argp)
        memcpy(&iocommand.error_info, c->err_info,
                sizeof(iocommand.error_info));
        if (copy_to_user(argp, &iocommand, sizeof(iocommand))) {
-               kfree(buff);
-               cmd_special_free(h, c);
-               return -EFAULT;
+               rc = -EFAULT;
+               goto out;
        }
        if (iocommand.Request.Type.Direction == XFER_READ &&
                iocommand.buf_size > 0) {
                /* Copy the data out of the buffer we created */
                if (copy_to_user(iocommand.buf, buff, iocommand.buf_size)) {
-                       kfree(buff);
-                       cmd_special_free(h, c);
-                       return -EFAULT;
+                       rc = -EFAULT;
+                       goto out;
                }
        }
-       kfree(buff);
+out:
        cmd_special_free(h, c);
-       return 0;
+out_kfree:
+       kfree(buff);
+       return rc;
 }
 
 static int hpsa_big_passthru_ioctl(struct ctlr_info *h, void __user *argp)