ALSA: emu10k1: Use DIV_ROUND_UP() instead of open-coding it

Use DIV_ROUND_UP() instead of open-coding it. This documents intent
and makes it more clear what is going on for the casual reviewer.

Generated using the following the Coccinelle semantic patch.

// <smpl>
@@
expression x, y;
@@
-(((x) + (y) - 1) / (y))
+DIV_ROUND_UP(x, y)
// </smpl>

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Link: https://lore.kernel.org/r/20201223172229.781-8-lars@metafoo.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>

diff --git a/sound/pci/emu10k1/memory.c b/sound/pci/emu10k1/memory.c
index 94b8d5b..288e0fd 100644 (file)
--- a/sound/pci/emu10k1/memory.c
+++ b/sound/pci/emu10k1/memory.c
@@ -375,7 +375,7 @@ int snd_emu10k1_alloc_pages_maybe_wider(struct snd_emu10k1 *emu, size_t size,
                                        struct snd_dma_buffer *dmab)
 {
        if (emu->iommu_workaround) {
-               size_t npages = (size + PAGE_SIZE - 1) / PAGE_SIZE;
+               size_t npages = DIV_ROUND_UP(size, PAGE_SIZE);
                size_t size_real = npages * PAGE_SIZE;
 
                /*