s390/vx: use simple assignments to access __vector128 members

Use simple assignments to access __vector128 members instead of hard
to read casts.

Signed-off-by: Heiko Carstens <[email protected]>

Author: hcahca

arch/s390/include/asm/fpu/internal.h

@@ -27,15 +27,15 @@ static inline void convert_vx_to_fp(freg_t *fprs, __vector128 *vxrs)
 	int i;
 
 	for (i = 0; i < __NUM_FPRS; i++)
-		fprs[i] = *(freg_t *)(vxrs + i);
+		fprs[i].ui = vxrs[i].high;
 }
 
 static inline void convert_fp_to_vx(__vector128 *vxrs, freg_t *fprs)
 {
 	int i;
 
 	for (i = 0; i < __NUM_FPRS; i++)
-		*(freg_t *)(vxrs + i) = fprs[i];
+		vxrs[i].high = fprs[i].ui;
 }
 
 static inline void fpregs_store(_s390_fp_regs *fpregs, struct fpu *fpu)

arch/s390/kernel/compat_signal.c

@@ -139,7 +139,7 @@ static int save_sigregs_ext32(struct pt_regs *regs,
 	/* Save vector registers to signal stack */
 	if (MACHINE_HAS_VX) {
 		for (i = 0; i < __NUM_VXRS_LOW; i++)
-			vxrs[i] = *((__u64 *)(current->thread.fpu.vxrs + i) + 1);
+			vxrs[i] = current->thread.fpu.vxrs[i].low;
 		if (__copy_to_user(&sregs_ext->vxrs_low, vxrs,
 				   sizeof(sregs_ext->vxrs_low)) ||
 		    __copy_to_user(&sregs_ext->vxrs_high,
@@ -173,7 +173,7 @@ static int restore_sigregs_ext32(struct pt_regs *regs,
 				     sizeof(sregs_ext->vxrs_high)))
 			return -EFAULT;
 		for (i = 0; i < __NUM_VXRS_LOW; i++)
-			*((__u64 *)(current->thread.fpu.vxrs + i) + 1) = vxrs[i];
+			current->thread.fpu.vxrs[i].low = vxrs[i];
 	}
 	return 0;
 }

arch/s390/kernel/crash_dump.c

@@ -110,7 +110,7 @@ void __init save_area_add_vxrs(struct save_area *sa, __vector128 *vxrs)
 
 	/* Copy lower halves of vector registers 0-15 */
 	for (i = 0; i < 16; i++)
-		memcpy(&sa->vxrs_low[i], &vxrs[i].u[2], 8);
+		sa->vxrs_low[i] = vxrs[i].low;
 	/* Copy vector registers 16-31 */
 	memcpy(sa->vxrs_high, vxrs + 16, 16 * sizeof(__vector128));
 }

arch/s390/kernel/ptrace.c

@@ -990,7 +990,7 @@ static int s390_vxrs_low_get(struct task_struct *target,
 	if (target == current)
 		save_fpu_regs();
 	for (i = 0; i < __NUM_VXRS_LOW; i++)
-		vxrs[i] = *((__u64 *)(target->thread.fpu.vxrs + i) + 1);
+		vxrs[i] = target->thread.fpu.vxrs[i].low;
 	return membuf_write(&to, vxrs, sizeof(vxrs));
 }
 
@@ -1008,12 +1008,12 @@ static int s390_vxrs_low_set(struct task_struct *target,
 		save_fpu_regs();
 
 	for (i = 0; i < __NUM_VXRS_LOW; i++)
-		vxrs[i] = *((__u64 *)(target->thread.fpu.vxrs + i) + 1);
+		vxrs[i] = target->thread.fpu.vxrs[i].low;
 
 	rc = user_regset_copyin(&pos, &count, &kbuf, &ubuf, vxrs, 0, -1);
 	if (rc == 0)
 		for (i = 0; i < __NUM_VXRS_LOW; i++)
-			*((__u64 *)(target->thread.fpu.vxrs + i) + 1) = vxrs[i];
+			target->thread.fpu.vxrs[i].low = vxrs[i];
 
 	return rc;
 }

arch/s390/kernel/signal.c

@@ -184,7 +184,7 @@ static int save_sigregs_ext(struct pt_regs *regs,
 	/* Save vector registers to signal stack */
 	if (MACHINE_HAS_VX) {
 		for (i = 0; i < __NUM_VXRS_LOW; i++)
-			vxrs[i] = *((__u64 *)(current->thread.fpu.vxrs + i) + 1);
+			vxrs[i] = current->thread.fpu.vxrs[i].low;
 		if (__copy_to_user(&sregs_ext->vxrs_low, vxrs,
 				   sizeof(sregs_ext->vxrs_low)) ||
 		    __copy_to_user(&sregs_ext->vxrs_high,
@@ -210,7 +210,7 @@ static int restore_sigregs_ext(struct pt_regs *regs,
 				     sizeof(sregs_ext->vxrs_high)))
 			return -EFAULT;
 		for (i = 0; i < __NUM_VXRS_LOW; i++)
-			*((__u64 *)(current->thread.fpu.vxrs + i) + 1) = vxrs[i];
+			current->thread.fpu.vxrs[i].low = vxrs[i];
 	}
 	return 0;
 }