[PATCH][next] powerpc: Use fallthrough pseudo-keyword

[Gustavo A. R. Silva]

Replace the existing /* fall through */ comments and its variants with
the new pseudo-keyword macro fallthrough[1]. Also, remove unnecessary
fall-through markings when it is the case.

[1] https://www.kernel.org/doc/html/v5.7/process/deprecated.html?highlight=fallthrough#implicit-switch-case-fall-through

Signed-off-by: Gustavo A. R. Silva <gustavoars@xxxxxxxxxx>
---
 arch/powerpc/kernel/align.c                 | 8 ++++----
 arch/powerpc/platforms/powermac/feature.c   | 2 +-
 arch/powerpc/platforms/powernv/opal-async.c | 2 +-
 arch/powerpc/platforms/pseries/hvcserver.c  | 2 +-
 arch/powerpc/xmon/xmon.c                    | 2 +-
 5 files changed, 8 insertions(+), 8 deletions(-)

diff --git a/arch/powerpc/kernel/align.c b/arch/powerpc/kernel/align.c
index 1f1ce8b86d5b..c7797eb958c7 100644
--- a/arch/powerpc/kernel/align.c
+++ b/arch/powerpc/kernel/align.c
@@ -178,11 +178,11 @@ static int emulate_spe(struct pt_regs *regs, unsigned int reg,
 			ret |= __get_user_inatomic(temp.v[1], p++);
 			ret |= __get_user_inatomic(temp.v[2], p++);
 			ret |= __get_user_inatomic(temp.v[3], p++);
-			/* fall through */
+			fallthrough;
 		case 4:
 			ret |= __get_user_inatomic(temp.v[4], p++);
 			ret |= __get_user_inatomic(temp.v[5], p++);
-			/* fall through */
+			fallthrough;
 		case 2:
 			ret |= __get_user_inatomic(temp.v[6], p++);
 			ret |= __get_user_inatomic(temp.v[7], p++);
@@ -263,11 +263,11 @@ static int emulate_spe(struct pt_regs *regs, unsigned int reg,
 			ret |= __put_user_inatomic(data.v[1], p++);
 			ret |= __put_user_inatomic(data.v[2], p++);
 			ret |= __put_user_inatomic(data.v[3], p++);
-			/* fall through */
+			fallthrough;
 		case 4:
 			ret |= __put_user_inatomic(data.v[4], p++);
 			ret |= __put_user_inatomic(data.v[5], p++);
-			/* fall through */
+			fallthrough;
 		case 2:
 			ret |= __put_user_inatomic(data.v[6], p++);
 			ret |= __put_user_inatomic(data.v[7], p++);
diff --git a/arch/powerpc/platforms/powermac/feature.c b/arch/powerpc/platforms/powermac/feature.c
index 181caa3f6717..5c77b9a24c0e 100644
--- a/arch/powerpc/platforms/powermac/feature.c
+++ b/arch/powerpc/platforms/powermac/feature.c
@@ -1465,7 +1465,7 @@ static long g5_i2s_enable(struct device_node *node, long param, long value)
 	case 2:
 		if (macio->type == macio_shasta)
 			break;
-		/* fall through */
+		fallthrough;
 	default:
 		return -ENODEV;
 	}
diff --git a/arch/powerpc/platforms/powernv/opal-async.c b/arch/powerpc/platforms/powernv/opal-async.c
index 1656e8965d6b..c094fdf5825c 100644
--- a/arch/powerpc/platforms/powernv/opal-async.c
+++ b/arch/powerpc/platforms/powernv/opal-async.c
@@ -104,7 +104,7 @@ static int __opal_async_release_token(int token)
 	 */
 	case ASYNC_TOKEN_DISPATCHED:
 		opal_async_tokens[token].state = ASYNC_TOKEN_ABANDONED;
-		/* Fall through */
+		fallthrough;
 	default:
 		rc = 1;
 	}
diff --git a/arch/powerpc/platforms/pseries/hvcserver.c b/arch/powerpc/platforms/pseries/hvcserver.c
index 267139b13530..96e18d3b2fcf 100644
--- a/arch/powerpc/platforms/pseries/hvcserver.c
+++ b/arch/powerpc/platforms/pseries/hvcserver.c
@@ -45,7 +45,7 @@ static int hvcs_convert(long to_convert)
 		case H_LONG_BUSY_ORDER_10_SEC:
 		case H_LONG_BUSY_ORDER_100_SEC:
 			return -EBUSY;
-		case H_FUNCTION: /* fall through */
+		case H_FUNCTION:
 		default:
 			return -EPERM;
 	}
diff --git a/arch/powerpc/xmon/xmon.c b/arch/powerpc/xmon/xmon.c
index 8fb1f857c11c..ed1a9f43709d 100644
--- a/arch/powerpc/xmon/xmon.c
+++ b/arch/powerpc/xmon/xmon.c
@@ -4278,7 +4278,7 @@ static int do_spu_cmd(void)
 		subcmd = inchar();
 		if (isxdigit(subcmd) || subcmd == '\n')
 			termch = subcmd;
-		/* fall through */
+		fallthrough;
 	case 'f':
 		scanhex(&num);
 		if (num >= XMON_NUM_SPUS || !spu_info[num].spu) {
-- 
2.27.0