linux-kernel - [patch 2/2] perf jit: remove some no-op error handling

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Date:	Sat, 16 Jul 2016 00:08:36 +0300
From:	Dan Carpenter <dan.carpenter@...cle.com>
To:	Peter Zijlstra <peterz@...radead.org>,
	Stephane Eranian <eranian@...gle.com>
Cc:	Ingo Molnar <mingo@...hat.com>,
	Arnaldo Carvalho de Melo <acme@...nel.org>,
	Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
	Adrian Hunter <adrian.hunter@...el.com>,
	linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org
Subject: [patch 2/2] perf jit: remove some no-op error handling

info.e_machine is a uint16_t so m is never less than zero.  It looks
like this was maybe left over code from earlier versions so I've just
removed it.

Signed-off-by: Dan Carpenter <dan.carpenter@...cle.com>

diff --git a/tools/perf/jvmti/jvmti_agent.c b/tools/perf/jvmti/jvmti_agent.c
index 91bf333..55daeff 100644
--- a/tools/perf/jvmti/jvmti_agent.c
+++ b/tools/perf/jvmti/jvmti_agent.c
@@ -59,7 +59,6 @@ static int get_e_machine(struct jitheader *hdr)
 	ssize_t sret;
 	char id[16];
 	int fd, ret = -1;
-	int m = -1;
 	struct {
 		uint16_t e_type;
 		uint16_t e_machine;
@@ -81,11 +80,7 @@ static int get_e_machine(struct jitheader *hdr)
 	if (sret != sizeof(info))
 		goto error;
 
-	m = info.e_machine;
-	if (m < 0)
-		m = 0; /* ELF EM_NONE */
-
-	hdr->elf_mach = m;
+	hdr->elf_mach = info.e_machine;
 	ret = 0;
 error:
 	close(fd);