[SCSI] libsas, bsg: pass errors through correctly

[pandora-kernel.git] / block / bsg.c

diff --git a/block/bsg.c b/block/bsg.c
index b8ddfc6..69b0a9d 100644 (file)
--- a/block/bsg.c
+++ b/block/bsg.c
@@ -445,6 +445,15 @@ static int blk_complete_sgv4_hdr_rq(struct request *rq, struct sg_io_v4 *hdr,
        else
                hdr->dout_resid = rq->data_len;
 
+       /*
+        * If the request generated a negative error number, return it
+        * (providing we aren't already returning an error); if it's
+        * just a protocol response (i.e. non negative), that gets
+        * processed above.
+        */
+       if (!ret && rq->errors < 0)
+               ret = rq->errors;
+
        blk_rq_unmap_user(bio);
        blk_put_request(rq);
 
@@ -837,6 +846,7 @@ static long bsg_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
 {
        struct bsg_device *bd = file->private_data;
        int __user *uarg = (int __user *) arg;
+       int ret;
 
        switch (cmd) {
                /*
@@ -889,12 +899,12 @@ static long bsg_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
                if (rq->next_rq)
                        bidi_bio = rq->next_rq->bio;
                blk_execute_rq(bd->queue, NULL, rq, 0);
-               blk_complete_sgv4_hdr_rq(rq, &hdr, bio, bidi_bio);
+               ret = blk_complete_sgv4_hdr_rq(rq, &hdr, bio, bidi_bio);
 
                if (copy_to_user(uarg, &hdr, sizeof(hdr)))
                        return -EFAULT;
 
-               return 0;
+               return ret;
        }
        /*
         * block device ioctls
@@ -908,7 +918,7 @@ static long bsg_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
        }
 }
 
-static struct file_operations bsg_fops = {
+static const struct file_operations bsg_fops = {
        .read           =       bsg_read,
        .write          =       bsg_write,
        .poll           =       bsg_poll,