The negation makes it a bool before the comparison and hence it

will never be 0x40.
Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Cc: Karsten Keil <isdn@linux-pingi.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

drivers/isdn/hisax/diva.c

@@ -382,7 +382,7 @@ MemwaitforXFW(struct IsdnCardState *cs, int hscx)
 {
 	int to = 50;
 
-	while ((!(MemReadHSCX(cs, hscx, HSCX_STAR) & 0x44) == 0x40) && to) {
+	while (((MemReadHSCX(cs, hscx, HSCX_STAR) & 0x44) != 0x40) && to) {
 		udelay(1);
 		to--;
 	}

drivers/isdn/hisax/hscx_irq.c

@@ -32,7 +32,7 @@ waitforXFW(struct IsdnCardState *cs, int hscx)
 {
 	int to = 50;
 
-	while ((!(READHSCX(cs, hscx, HSCX_STAR) & 0x44) == 0x40) && to) {
+	while (((READHSCX(cs, hscx, HSCX_STAR) & 0x44) != 0x40) && to) {
 		udelay(1);
 		to--;
 	}