[PATCH v4 09/13] wifi: brcm80211: Replace open-coded parity calculation with parity_odd()

[Kuan-Wei Chiu]

Refactor parity calculations to use the standard parity_odd() helper.
This change eliminates redundant implementations.

Co-developed-by: Yu-Chun Lin <eleanor15x at gmail.com>
Signed-off-by: Yu-Chun Lin <eleanor15x at gmail.com>
Signed-off-by: Kuan-Wei Chiu <visitorckw at gmail.com>
Acked-by: Arend van Spriel <arend.vanspriel at broadcom.com>
---
 .../wireless/broadcom/brcm80211/brcmsmac/dma.c | 18 ++----------------
 1 file changed, 2 insertions(+), 16 deletions(-)

diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmsmac/dma.c b/drivers/net/wireless/broadcom/brcm80211/brcmsmac/dma.c
index 80c35027787a..5d7500ee2d3b 100644
--- a/drivers/net/wireless/broadcom/brcm80211/brcmsmac/dma.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmsmac/dma.c
@@ -17,6 +17,7 @@
 #include <linux/slab.h>
 #include <linux/delay.h>
 #include <linux/pci.h>
+#include <linux/bitops.h>
 #include <net/cfg80211.h>
 #include <net/mac80211.h>
 
@@ -283,24 +284,9 @@ struct dma_info {
 	bool aligndesc_4k;
 };
 
-/* Check for odd number of 1's */
-static u32 parity32(__le32 data)
-{
-	/* no swap needed for counting 1's */
-	u32 par_data = *(u32 *)&data;
-
-	par_data ^= par_data >> 16;
-	par_data ^= par_data >> 8;
-	par_data ^= par_data >> 4;
-	par_data ^= par_data >> 2;
-	par_data ^= par_data >> 1;
-
-	return par_data & 1;
-}
-
 static bool dma64_dd_parity(struct dma64desc *dd)
 {
-	return parity32(dd->addrlow ^ dd->addrhigh ^ dd->ctrl1 ^ dd->ctrl2);
+	return parity_odd(dd->addrlow ^ dd->addrhigh ^ dd->ctrl1 ^ dd->ctrl2);
 }
 
 /* descriptor bumping functions */
-- 
2.34.1