linux-kernel - [tip:x86/cleanups] x86/events: Mark expected switch-case fall-throughs

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Message-ID: <tip-2b0fc3742bc77687f58d389c902ee092df6f8669@git.kernel.org>
Date:   Tue, 29 Jan 2019 07:27:57 -0800
From:   "tip-bot for Gustavo A. R. Silva" <tipbot@...or.com>
To:     linux-tip-commits@...r.kernel.org
Cc:     linux-kernel@...r.kernel.org, tglx@...utronix.de, mingo@...hat.com,
        peterz@...radead.org, keescook@...omium.org, hpa@...or.com,
        x86@...nel.org, gustavo@...eddedor.com, qianyue.zj@...baba-inc.com,
        jacek.tomaka@...zta.fm, jolsa@...nel.org, ak@...ux.intel.com,
        mingo@...nel.org, bp@...e.de, kan.liang@...ux.intel.com
Subject: [tip:x86/cleanups] x86/events: Mark expected switch-case
 fall-throughs

Commit-ID:  2b0fc3742bc77687f58d389c902ee092df6f8669
Gitweb:     https://git.kernel.org/tip/2b0fc3742bc77687f58d389c902ee092df6f8669
Author:     Gustavo A. R. Silva <gustavo@...eddedor.com>
AuthorDate: Fri, 25 Jan 2019 12:49:17 -0600
Committer:  Borislav Petkov <bp@...e.de>
CommitDate: Tue, 29 Jan 2019 16:23:47 +0100

x86/events: Mark expected switch-case fall-throughs

In preparation to enable -Wimplicit-fallthrough by default, mark
switch-case statements where fall-through is intentional, explicitly in
order to fix a couple of -Wimplicit-fallthrough warnings.

Warning level 3 was used: -Wimplicit-fallthrough=3.

 [ bp: Massasge and trim commit message. ]

Signed-off-by: Gustavo A. R. Silva <gustavo@...eddedor.com>
Signed-off-by: Borislav Petkov <bp@...e.de>
Acked-by: Peter Zijlstra <peterz@...radead.org>
Cc: Andi Kleen <ak@...ux.intel.com>
Cc: "H. Peter Anvin" <hpa@...or.com>
Cc: Ingo Molnar <mingo@...hat.com>
Cc: Jacek Tomaka <jacek.tomaka@...zta.fm>
Cc: Jia Zhang <qianyue.zj@...baba-inc.com>
Cc: Jiri Olsa <jolsa@...nel.org>
Cc: Kan Liang <kan.liang@...ux.intel.com>
Cc: Kees Cook <keescook@...omium.org>
Cc: Thomas Gleixner <tglx@...utronix.de>
Cc: x86-ml <x86@...nel.org>
Link: https://lkml.kernel.org/r/20190125184917.GA7289@embeddedor
---
 arch/x86/events/intel/core.c | 2 ++
 arch/x86/events/intel/lbr.c  | 1 +
 2 files changed, 3 insertions(+)

diff --git a/arch/x86/events/intel/core.c b/arch/x86/events/intel/core.c
index 40e12cfc87f6..ece43e7e4569 100644
--- a/arch/x86/events/intel/core.c
+++ b/arch/x86/events/intel/core.c
@@ -4168,6 +4168,8 @@ __init int intel_pmu_init(void)
 
 	case INTEL_FAM6_CORE2_MEROM:
 		x86_add_quirk(intel_clovertown_quirk);
+		/* fall through */
+
 	case INTEL_FAM6_CORE2_MEROM_L:
 	case INTEL_FAM6_CORE2_PENRYN:
 	case INTEL_FAM6_CORE2_DUNNINGTON:
diff --git a/arch/x86/events/intel/lbr.c b/arch/x86/events/intel/lbr.c
index c88ed39582a1..580c1b91c454 100644
--- a/arch/x86/events/intel/lbr.c
+++ b/arch/x86/events/intel/lbr.c
@@ -931,6 +931,7 @@ static int branch_type(unsigned long from, unsigned long to, int abort)
 			ret = X86_BR_ZERO_CALL;
 			break;
 		}
+		/* fall through */
 	case 0x9a: /* call far absolute */
 		ret = X86_BR_CALL;
 		break;