staging: kpc2000: double unlock in error handling in kpc_dma_transfer()

The goto err_descr_too_many; calls unlock_engine() so this unlocks
twice.

Fixes: 7df95299b94a ("staging: kpc2000: Add DMA driver")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/staging/kpc2000/kpc_dma/fileops.c b/drivers/staging/kpc2000/kpc_dma/fileops.c
index 0886ad4..6166587 100644 (file)
--- a/drivers/staging/kpc2000/kpc_dma/fileops.c
+++ b/drivers/staging/kpc2000/kpc_dma/fileops.c
@@ -116,13 +116,11 @@ int  kpc_dma_transfer(struct dev_private_data *priv, struct kiocb *kcb, unsigned
        if (desc_needed >= ldev->desc_pool_cnt){
                dev_warn(&priv->ldev->pldev->dev, "    mapped_entry_count = %d    num_descrs_needed = %d    num_descrs_avail = %d    TOO MANY to ever complete!\n", acd->mapped_entry_count, desc_needed, num_descrs_avail);
                rv = -EAGAIN;
-               unlock_engine(ldev);
                goto err_descr_too_many;
        }
        if (desc_needed > num_descrs_avail){
                dev_warn(&priv->ldev->pldev->dev, "    mapped_entry_count = %d    num_descrs_needed = %d    num_descrs_avail = %d    Too many to complete right now.\n", acd->mapped_entry_count, desc_needed, num_descrs_avail);
                rv = -EMSGSIZE;
-               unlock_engine(ldev);
                goto err_descr_too_many;
        }