diff mbox series

powerpc: annotate implicit fall throughs

Message ID 20181129092830.40680c49@canb.auug.org.au (mailing list archive)
State Accepted
Commit 8ad940217cce2b6ccc8d8cc7156e9aea34ae5573
Headers show
Series powerpc: annotate implicit fall throughs | expand

Checks

Context Check Description
snowpatch_ozlabs/apply_patch success next/apply_patch Successfully applied
snowpatch_ozlabs/build-ppc64le success build succeded & removed 0 sparse warning(s)
snowpatch_ozlabs/build-ppc64be success build succeded & removed 0 sparse warning(s)
snowpatch_ozlabs/build-ppc64e success build succeded & removed 0 sparse warning(s)
snowpatch_ozlabs/build-pmac32 success build succeded & removed 0 sparse warning(s)
snowpatch_ozlabs/checkpatch success total: 0 errors, 0 warnings, 0 checks, 21 lines checked

Commit Message

Stephen Rothwell Nov. 28, 2018, 10:28 p.m. UTC
There is a plan to build the kernel with -Wimplicit-fallthrough and these
places in the code produced warnings, but because we build arch/powerpc
with -Werror, they became errors.  Fix them up.

This patch produces no change in behaviour, but should be reviewed in
case these are actually bugs not intentional fallthoughs.

Cc: Kees Cook <keescook@google.com>
Cc: Gustavo A. R. Silva <gustavo@embeddedor.com>
Cc: Nicholas Piggin <npiggin@gmail.com>
Cc: Balbir Singh <bsingharora@gmail.com>
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
---
 arch/powerpc/kernel/nvram_64.c            | 1 +
 arch/powerpc/platforms/powermac/feature.c | 1 +
 arch/powerpc/xmon/xmon.c                  | 1 +
 3 files changed, 3 insertions(+)

The patch is relative to v4.20-rc4 and has been in linux-next for a
few days.
diff mbox series

Patch

diff --git a/arch/powerpc/kernel/nvram_64.c b/arch/powerpc/kernel/nvram_64.c
index 22e9d281324d..06e2eda2430e 100644
--- a/arch/powerpc/kernel/nvram_64.c
+++ b/arch/powerpc/kernel/nvram_64.c
@@ -809,6 +809,7 @@  static long dev_nvram_ioctl(struct file *file, unsigned int cmd,
 #ifdef CONFIG_PPC_PMAC
 	case OBSOLETE_PMAC_NVRAM_GET_OFFSET:
 		printk(KERN_WARNING "nvram: Using obsolete PMAC_NVRAM_GET_OFFSET ioctl\n");
+		/* fall through */
 	case IOC_NVRAM_GET_OFFSET: {
 		int part, offset;
 
diff --git a/arch/powerpc/platforms/powermac/feature.c b/arch/powerpc/platforms/powermac/feature.c
index ed2f54b3f173..a7ec06876b53 100644
--- a/arch/powerpc/platforms/powermac/feature.c
+++ b/arch/powerpc/platforms/powermac/feature.c
@@ -1471,6 +1471,7 @@  static long g5_i2s_enable(struct device_node *node, long param, long value)
 	case 2:
 		if (macio->type == macio_shasta)
 			break;
+		/* fall through */
 	default:
 		return -ENODEV;
 	}
diff --git a/arch/powerpc/xmon/xmon.c b/arch/powerpc/xmon/xmon.c
index 36b8dc47a3c3..308326f8b7ed 100644
--- a/arch/powerpc/xmon/xmon.c
+++ b/arch/powerpc/xmon/xmon.c
@@ -4033,6 +4033,7 @@  static int do_spu_cmd(void)
 		subcmd = inchar();
 		if (isxdigit(subcmd) || subcmd == '\n')
 			termch = subcmd;
+		/* fall through */
 	case 'f':
 		scanhex(&num);
 		if (num >= XMON_NUM_SPUS || !spu_info[num].spu) {