ieee1394: Use hweight32

Use hweight32 instead of counting for each bit

Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de> (add required include)

diff --git a/drivers/ieee1394/ohci1394.c b/drivers/ieee1394/ohci1394.c
index 65c1429e412994c6633135b370dfa45842e3fa29..d0dc1db80b295adc31ad88eb38bb82a3106f6175 100644 (file)
--- a/drivers/ieee1394/ohci1394.c
+++ b/drivers/ieee1394/ohci1394.c
@@ -82,6 +82,7 @@
  *
  */
 
+#include <linux/bitops.h>
 #include <linux/kernel.h>
 #include <linux/list.h>
 #include <linux/slab.h>
@@ -434,7 +435,6 @@ static void initialize_dma_trm_ctx(struct dma_trm_ctx *d)
 /* Count the number of available iso contexts */
 static int get_nb_iso_ctx(struct ti_ohci *ohci, int reg)
 {
-       int i,ctx=0;
        u32 tmp;
 
        reg_write(ohci, reg, 0xffffffff);
@@ -443,11 +443,7 @@ static int get_nb_iso_ctx(struct ti_ohci *ohci, int reg)
        DBGMSG("Iso contexts reg: %08x implemented: %08x", reg, tmp);
 
        /* Count the number of contexts */
-       for (i=0; i<32; i++) {
-               if (tmp & 1) ctx++;
-               tmp >>= 1;
-       }
-       return ctx;
+       return hweight32(tmp);
 }
 
 /* Global initialization */