[PATCH 02/10] brcmstb_gisb: Replace "hweight_long(mask) != 1" with "!is_power_of_2(mask)"

From: Zhaoxiu Zeng
Date: Sun Dec 06 2015 - 05:13:07 EST


From: Zeng Zhaoxiu <zhaoxiu.zeng@xxxxxxxxx>

Signed-off-by: Zeng Zhaoxiu <zhaoxiu.zeng@xxxxxxxxx>
---
drivers/bus/brcmstb_gisb.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/bus/brcmstb_gisb.c b/drivers/bus/brcmstb_gisb.c
index f364fa4..2816a04 100644
--- a/drivers/bus/brcmstb_gisb.c
+++ b/drivers/bus/brcmstb_gisb.c
@@ -24,6 +24,7 @@
#include <linux/of.h>
#include <linux/bitops.h>
#include <linux/pm.h>
+#include <linux/log2.h>

#ifdef CONFIG_ARM
#include <asm/bug.h>
@@ -171,7 +172,7 @@ brcmstb_gisb_master_to_str(struct brcmstb_gisb_arb_device *gdev,
{
u32 mask = gdev->valid_mask & masters;

- if (hweight_long(mask) != 1)
+ if (!is_power_of_2(mask))
return NULL;

return gdev->master_names[ffs(mask) - 1];
--
2.5.0

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