staging: comedi: mite: use prefered form for passing a struct size (0bdb1288) · Commits · 戴 / test

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:

drivers/staging/comedi/drivers/mite.c

+6 −5

Original line number	Diff line number	Diff line
		@@ -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),
		descs = dma_alloc_coherent(ring->hw_dev,
		n_links * sizeof(*descs),
		&ring->dma_addr, GFP_KERNEL);
		if (!ring->descs) {
		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);