From: "Gustavo A. R. Silva" <gustavo@embeddedor.com>
To: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: linux-kernel@vger.kernel.org,
"Gustavo A. R. Silva" <gustavo@embeddedor.com>,
Kees Cook <keescook@chromium.org>
Subject: [PATCH] intel_th: Mark expected switch fall-throughs
Date: Tue, 12 Feb 2019 15:43:02 -0600 [thread overview]
Message-ID: <20190212214302.GA23708@embeddedor> (raw)
In preparation to enabling -Wimplicit-fallthrough, mark switch
cases where we are expecting to fall through.
This patch fixes the following warnings:
drivers/hwtracing/intel_th/sth.c: In function ‘sth_stm_packet’:
drivers/hwtracing/intel_th/sth.c:86:7: warning: this statement may fall through [-Wimplicit-fallthrough=]
reg += 4;
~~~~^~~~
drivers/hwtracing/intel_th/sth.c:87:2: note: here
case STP_PACKET_XSYNC:
^~~~
drivers/hwtracing/intel_th/sth.c:88:7: warning: this statement may fall through [-Wimplicit-fallthrough=]
reg += 8;
~~~~^~~~
drivers/hwtracing/intel_th/sth.c:89:2: note: here
case STP_PACKET_TRIG:
^~~~
Warning level 3 was used: -Wimplicit-fallthrough=3
This patch is part of the ongoing efforts to enable
-Wimplicit-fallthrough.
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
---
drivers/hwtracing/intel_th/sth.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/hwtracing/intel_th/sth.c b/drivers/hwtracing/intel_th/sth.c
index 4b7ae47789d2..3a1f4e650378 100644
--- a/drivers/hwtracing/intel_th/sth.c
+++ b/drivers/hwtracing/intel_th/sth.c
@@ -84,8 +84,12 @@ static ssize_t notrace sth_stm_packet(struct stm_data *stm_data,
/* Global packets (GERR, XSYNC, TRIG) are sent with register writes */
case STP_PACKET_GERR:
reg += 4;
+ /* fall through */
+
case STP_PACKET_XSYNC:
reg += 8;
+ /* fall through */
+
case STP_PACKET_TRIG:
if (flags & STP_PACKET_TIMESTAMPED)
reg += 4;
--
2.20.1
next reply other threads:[~2019-02-12 21:43 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-02-12 21:43 Gustavo A. R. Silva [this message]
2019-02-20 18:12 ` [PATCH] intel_th: Mark expected switch fall-throughs Gustavo A. R. Silva
2019-02-21 11:52 ` Alexander Shishkin
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