On 02/05/16 18:11, H Hartley Sweeten wrote:
Add a local variable to mite_buf_change() so that the prefered form of passing a struct size, sizeof(*p), can be used.Signed-off-by: H Hartley Sweeten <hswee...@visionengravers.com> Cc: Ian Abbott <abbo...@mev.co.uk> Cc: Greg Kroah-Hartman <gre...@linuxfoundation.org> --- drivers/staging/comedi/drivers/mite.c | 11 ++++++----- 1 file changed, 6 insertions(+), 5 deletions(-) diff --git a/drivers/staging/comedi/drivers/mite.c b/drivers/staging/comedi/drivers/mite.c index 8b0f875..650c603 100644 --- a/drivers/staging/comedi/drivers/mite.c +++ b/drivers/staging/comedi/drivers/mite.c @@ -473,6 +473,7 @@ int mite_buf_change(struct mite_ring *ring, struct comedi_subdevice *s) { struct comedi_async *async = s->async; + struct mite_dma_desc *descs; unsigned int n_links; mite_free_dma_descs(ring); @@ -482,15 +483,15 @@ int mite_buf_change(struct mite_ring *ring, n_links = async->prealloc_bufsz >> PAGE_SHIFT; - ring->descs = - dma_alloc_coherent(ring->hw_dev, - n_links * sizeof(struct mite_dma_desc), - &ring->dma_addr, GFP_KERNEL); - if (!ring->descs) { + descs = dma_alloc_coherent(ring->hw_dev, + n_links * sizeof(*descs), + &ring->dma_addr, GFP_KERNEL); + if (!descs) { dev_err(s->device->class_dev, "mite: ring buffer allocation failed\n"); return -ENOMEM; } + ring->descs = descs; ring->n_links = n_links; return mite_init_ring_descriptors(ring, s, n_links << PAGE_SHIFT);
It doesn't matter, but you could have just used `sizeof(*ring->descs)` instead of defining a new variable.
-- -=( Ian Abbott @ MEV Ltd. E-mail: <abbo...@mev.co.uk> )=- -=( Web: http://www.mev.co.uk/ )=- _______________________________________________ devel mailing list de...@linuxdriverproject.org http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel
