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authorJulia Lawall <Julia.Lawall@lip6.fr>2014-05-19 08:31:15 +0400
committerMartin Schwidefsky <schwidefsky@de.ibm.com>2014-05-27 12:26:00 +0400
commit94414ca08afabbb5d19511ef57ec397a07fc6d35 (patch)
tree8255acd9fdf438e4378c5fd0f6cc39f58acd9523 /arch/s390/oprofile
parent470ada6b1a1d80a173586c036f84e2c3a486ebf9 (diff)
downloadlinux-94414ca08afabbb5d19511ef57ec397a07fc6d35.tar.xz
s390/oprofile: make return of 0 explicit
Delete unnecessary local variable whose value is always 0 and that hides the fact that the result is always 0. A simplified version of the semantic patch that fixes this problem is as follows: (http://coccinelle.lip6.fr/) // <smpl> @r exists@ local idexpression ret; expression e; position p; @@ -ret = 0; ... when != ret = e return - ret + 0 ; // </smpl> [heiko.carstens: turn prepare_cpu_buffers into a void returning function] Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390/oprofile')
-rw-r--r--arch/s390/oprofile/hwsampler.c14
1 files changed, 4 insertions, 10 deletions
diff --git a/arch/s390/oprofile/hwsampler.c b/arch/s390/oprofile/hwsampler.c
index 276f2e26c761..e53c6f268807 100644
--- a/arch/s390/oprofile/hwsampler.c
+++ b/arch/s390/oprofile/hwsampler.c
@@ -209,13 +209,11 @@ static void init_all_cpu_buffers(void)
}
}
-static int prepare_cpu_buffers(void)
+static void prepare_cpu_buffers(void)
{
- int cpu;
- int rc;
struct hws_cpu_buffer *cb;
+ int cpu;
- rc = 0;
for_each_online_cpu(cpu) {
cb = &per_cpu(sampler_cpu_buffer, cpu);
atomic_set(&cb->ext_params, 0);
@@ -230,8 +228,6 @@ static int prepare_cpu_buffers(void)
cb->oom = 0;
cb->stop_mode = 0;
}
-
- return rc;
}
/*
@@ -1107,9 +1103,7 @@ int hwsampler_start_all(unsigned long rate)
if (rc)
goto start_all_exit;
- rc = prepare_cpu_buffers();
- if (rc)
- goto start_all_exit;
+ prepare_cpu_buffers();
for_each_online_cpu(cpu) {
rc = start_sampling(cpu);
@@ -1156,7 +1150,7 @@ int hwsampler_stop_all(void)
rc = 0;
if (hws_state == HWS_INIT) {
mutex_unlock(&hws_sem);
- return rc;
+ return 0;
}
hws_state = HWS_STOPPING;
mutex_unlock(&hws_sem);