diff options
Diffstat (limited to 'drivers/staging/kpc2000/kpc_dma')
| -rw-r--r-- | drivers/staging/kpc2000/kpc_dma/fileops.c | 13 |
1 files changed, 5 insertions, 8 deletions
diff --git a/drivers/staging/kpc2000/kpc_dma/fileops.c b/drivers/staging/kpc2000/kpc_dma/fileops.c index 08d90a64f9c8..8cd20adea91c 100644 --- a/drivers/staging/kpc2000/kpc_dma/fileops.c +++ b/drivers/staging/kpc2000/kpc_dma/fileops.c @@ -76,10 +76,10 @@ static int kpc_dma_transfer(struct dev_private_data *priv, // Lock the user buffer pages in memory, and hold on to the page pointers (for the sglist) mmap_read_lock(current->mm); /* get memory map semaphore */ - rv = get_user_pages(iov_base, acd->page_count, FOLL_TOUCH | FOLL_WRITE | FOLL_GET, acd->user_pages, NULL); + rv = pin_user_pages(iov_base, acd->page_count, FOLL_TOUCH | FOLL_WRITE, acd->user_pages, NULL); mmap_read_unlock(current->mm); /* release the semaphore */ if (rv != acd->page_count) { - dev_err(&priv->ldev->pldev->dev, "Couldn't get_user_pages (%d)\n", rv); + dev_err(&priv->ldev->pldev->dev, "Couldn't pin_user_pages (%d)\n", rv); goto err_get_user_pages; } @@ -189,13 +189,11 @@ static int kpc_dma_transfer(struct dev_private_data *priv, sg_free_table(&acd->sgt); err_dma_map_sg: err_alloc_sg_table: - for (i = 0 ; i < acd->page_count ; i++) - put_page(acd->user_pages[i]); + unpin_user_pages(acd->user_pages, acd->page_count); err_get_user_pages: if (rv > 0) { - for (i = 0; i < rv; i++) - put_pages(acd->user_pages[i]); + unpin_user_pages(acd->user_pages, rv); rv = -EFAULT; } kfree(acd->user_pages); @@ -222,8 +220,7 @@ void transfer_complete_cb(struct aio_cb_data *acd, size_t xfr_count, u32 flags) set_page_dirty_lock(acd->user_pages[i]); } - for (i = 0 ; i < acd->page_count ; i++) - put_page(acd->user_pages[i]); + unpin_user_pages(acd->user_pages, acd->page_count); sg_free_table(&acd->sgt); |