[PATCH v4 10/13] drm/bridge: dw-hdmi: Replace open-coded parity calculation with parity_odd()

Kuan-Wei Chiu <[email protected]>
Newsgroups dev.linux.lists.brcm80211,org.freedesktop.lists.dri-devel,org.infradead.lists.linux-i3c,org.infradead.lists.linux-mtd,org.kernel.vger.bpf,org.kernel.vger.linux-hwmon,org.kernel.vger.linux-input,org.kernel.vger.linux-kernel,org.kernel.vger.linux-media,org.kernel.vger.linux-serial,org.kernel.vger.linux-wireless,org.kernel.vger.netdev
Message-ID <[email protected]>
Refactor parity calculations to use the standard parity_odd() helper.
This change eliminates redundant implementations.

Co-developed-by: Yu-Chun Lin <[email protected]>
Signed-off-by: Yu-Chun Lin <[email protected]>
Signed-off-by: Kuan-Wei Chiu <[email protected]>
---
 drivers/gpu/drm/bridge/synopsys/dw-hdmi-ahb-audio.c | 8 ++------
 1 file changed, 2 insertions(+), 6 deletions(-)

diff --git a/drivers/gpu/drm/bridge/synopsys/dw-hdmi-ahb-audio.c b/drivers/gpu/drm/bridge/synopsys/dw-hdmi-ahb-audio.c
index cf1f66b7b192..abf2c72be622 100644
--- a/drivers/gpu/drm/bridge/synopsys/dw-hdmi-ahb-audio.c
+++ b/drivers/gpu/drm/bridge/synopsys/dw-hdmi-ahb-audio.c
@@ -4,6 +4,7 @@
  *
  * Written and tested against the Designware HDMI Tx found in iMX6.
  */
+#include <linux/bitops.h>
 #include <linux/io.h>
 #include <linux/interrupt.h>
 #include <linux/module.h>
@@ -171,12 +172,7 @@ static void dw_hdmi_reformat_iec958(struct snd_dw_hdmi *dw,
 
 static u32 parity(u32 sample)
 {
-	sample ^= sample >> 16;
-	sample ^= sample >> 8;
-	sample ^= sample >> 4;
-	sample ^= sample >> 2;
-	sample ^= sample >> 1;
-	return (sample & 1) << 27;
+	return parity_odd(sample) << 27;
 }
 
 static void dw_hdmi_reformat_s24(struct snd_dw_hdmi *dw,
-- 
2.34.1
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