ALSA: hda: Use DIV_ROUND_UP()/roundup() instead of open-coding it

Use DIV_ROUND_UP() and roundup() instead of open-coding them. 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)) * y)
+roundup(x, y)

@r1@
expression x;
constant C1;
constant C2;
@@
 (x + C1) / C2

@script:python@
C1 << r1.C1;
C2 << r1.C2;
@@
print C1, C2
try:
	if int(C1) != int(C2) - 1:
		cocci.include_match(False)
except:
	cocci.include_match(False)

@@
expression r1.x;
constant r1.C1;
constant r1.C2;
@@
-(((x) + C1) / C2)
+DIV_ROUND_UP(x, C2)
// </smpl>

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Link: https://lore.kernel.org/r/20201223172229.781-9-lars@metafoo.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>

1 files changed, 2 insertions, 3 deletions

diff --git a/sound/hda/hdac_stream.c b/sound/hda/hdac_stream.c
index abe7a1b16fe1..a6ed3dc35f7e 100644
--- a/sound/hda/hdac_stream.c
+++ b/sound/hda/hdac_stream.c
@@ -435,12 +435,11 @@ int snd_hdac_stream_setup_periods(struct hdac_stream *azx_dev)
 	pos_adj = bus->bdl_pos_adj;
 	if (!azx_dev->no_period_wakeup && pos_adj > 0) {
 		pos_align = pos_adj;
-		pos_adj = (pos_adj * runtime->rate + 47999) / 48000;
+		pos_adj = DIV_ROUND_UP(pos_adj * runtime->rate, 48000);
 		if (!pos_adj)
 			pos_adj = pos_align;
 		else
-			pos_adj = ((pos_adj + pos_align - 1) / pos_align) *
-				pos_align;
+			pos_adj = roundup(pos_adj, pos_align);
 		pos_adj = frames_to_bytes(runtime, pos_adj);
 		if (pos_adj >= period_bytes) {
 			dev_warn(bus->dev, "Too big adjustment %d\n",