vnc: replace hweight_long() with ctpopl()

ctpopl() has a better implementation than hweight_long() and ui/vnc.c
being the last user of hweight_long(), we can simply remove it.

Signed-off-by: Cédric Le Goater <clg@kaod.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 1489415605-13105-1-git-send-email-clg@kaod.org
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>

include/qemu/bitops.h

@@ -201,16 +201,6 @@ static inline unsigned long find_first_zero_bit(const unsigned long *addr,
     return find_next_zero_bit(addr, size, 0);
 }
 
-static inline unsigned long hweight_long(unsigned long w)
-{
-    unsigned long count;
-
-    for (count = 0; w; w >>= 1) {
-        count += w & 1;
-    }
-    return count;
-}
-
 /**
  * rol8 - rotate an 8-bit value left
  * @word: value to rotate

ui/vnc.c

@@ -2061,15 +2061,15 @@ static void set_pixel_format(VncState *vs, int bits_per_pixel,
     }
 
     vs->client_pf.rmax = red_max ? red_max : 0xFF;
-    vs->client_pf.rbits = hweight_long(red_max);
+    vs->client_pf.rbits = ctpopl(red_max);
     vs->client_pf.rshift = red_shift;
     vs->client_pf.rmask = red_max << red_shift;
     vs->client_pf.gmax = green_max ? green_max : 0xFF;
-    vs->client_pf.gbits = hweight_long(green_max);
+    vs->client_pf.gbits = ctpopl(green_max);
     vs->client_pf.gshift = green_shift;
     vs->client_pf.gmask = green_max << green_shift;
     vs->client_pf.bmax = blue_max ? blue_max : 0xFF;
-    vs->client_pf.bbits = hweight_long(blue_max);
+    vs->client_pf.bbits = ctpopl(blue_max);
     vs->client_pf.bshift = blue_shift;
     vs->client_pf.bmask = blue_max << blue_shift;
     vs->client_pf.bits_per_pixel = bits_per_pixel;