* [PATCH]is_power_of_2-scsi/esp_scsi.c
@ 2007-06-12 5:24 vignesh babu
0 siblings, 0 replies; only message in thread
From: vignesh babu @ 2007-06-12 5:24 UTC (permalink / raw)
To: James.Bottomley; +Cc: linux-scsi, Kernel Janitors List
Replacing (n & (n-1)) in the context of power of 2 checks
with is_power_of_2
Signed-off-by: vignesh babu <vignesh.babu@wipro.com>
---
diff --git a/drivers/scsi/esp_scsi.c b/drivers/scsi/esp_scsi.c
index ec71061..c416154 100644
--- a/drivers/scsi/esp_scsi.c
+++ b/drivers/scsi/esp_scsi.c
@@ -14,6 +14,7 @@
#include <linux/moduleparam.h>
#include <linux/init.h>
#include <linux/irqreturn.h>
+#include <linux/log2.h>
#include <asm/irq.h>
#include <asm/io.h>
@@ -1130,7 +1131,7 @@ static int esp_reconnect(struct esp *esp)
if (!(bits & esp->scsi_id_mask))
goto do_reset;
bits &= ~esp->scsi_id_mask;
- if (!bits || (bits & (bits - 1)))
+ if (!is_power_of_2(bits))
goto do_reset;
target = ffs(bits) - 1;
--
Vignesh Babu BM
_____________________________________________________________
"Why is it that every time I'm with you, makes me believe in magic?"
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