Blackfin arch: dont clear status register bits in SWRST so we can actually use it

Signed-off-by: NMike Frysinger <michael.frysinger@analog.com>
Signed-off-by: NBryan Wu <bryan.wu@analog.com>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

arch/blackfin/mach-bf533/head.S

@@ -468,12 +468,6 @@ ENTRY(_bfin_reset)
 	w[p0] = r0.l;
 #endif
 
-	/* Clear the bits 13-15 in SWRST if they werent cleared */
-	p0.h = hi(SWRST);
-	p0.l = lo(SWRST);
-	csync;
-	r0.l = w[p0];
-
 	/* Clear the IMASK register */
 	p0.h = hi(IMASK);
 	p0.l = lo(IMASK);

arch/blackfin/mach-bf537/head.S

@@ -504,12 +504,6 @@ _delay_lab1_end:
 	nop;
 #endif
 
-	/* Clear the bits 13-15 in SWRST if they werent cleared */
-	p0.h = hi(SWRST);
-	p0.l = lo(SWRST);
-	csync;
-	r0.l = w[p0];
-
 	/* Clear the IMASK register */
 	p0.h = hi(IMASK);
 	p0.l = lo(IMASK);

arch/blackfin/mach-bf561/head.S

@@ -414,12 +414,6 @@ ENTRY(_bfin_reset)
 	w[p0] = r0.l;
 #endif
 
-	/* Clear the bits 13-15 in SWRST if they werent cleared */
-	p0.h = hi(SICA_SWRST);
-	p0.l = lo(SICA_SWRST);
-	csync;
-	r0.l = w[p0];
-
 	/* Clear the IMASK register */
 	p0.h = hi(IMASK);
 	p0.l = lo(IMASK);