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authorMartin Schwidefsky <schwidefsky@de.ibm.com>2011-05-10 17:13:42 +0200
committerMartin Schwidefsky <sky@mschwide.boeblingen.de.ibm.com>2011-05-10 17:13:43 +0200
commit3d8dcb3c76bb2930798f61675c33cce8945ab988 (patch)
treee66a26e9214bb4d9dc4d57bad238706b05662e1b /arch/s390/oprofile/hwsampler.c
parent83ace2701b81be549cca7af33c5b0499cb2602d6 (diff)
downloadop-kernel-dev-3d8dcb3c76bb2930798f61675c33cce8945ab988.zip
op-kernel-dev-3d8dcb3c76bb2930798f61675c33cce8945ab988.tar.gz
[S390] oprofile: fix min/max interval query checks
oprofile_min_interval and oprofile_max_interval are unsigned, checking for negative values doesn't work. Change hwsampler_query_min_interval and hwsampler_query_max_interval to return an unsigned long and check for a zero value instead. Reported-by: Nicolas Kaiser <nikai@nikai.net> Acked-by: Robert Richter <robert.richter@amd.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390/oprofile/hwsampler.c')
-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 4952872..33cbd37 100644
--- a/arch/s390/oprofile/hwsampler.c
+++ b/arch/s390/oprofile/hwsampler.c
@@ -1021,20 +1021,14 @@ deallocate_exit:
return rc;
}
-long hwsampler_query_min_interval(void)
+unsigned long hwsampler_query_min_interval(void)
{
- if (min_sampler_rate)
- return min_sampler_rate;
- else
- return -EINVAL;
+ return min_sampler_rate;
}
-long hwsampler_query_max_interval(void)
+unsigned long hwsampler_query_max_interval(void)
{
- if (max_sampler_rate)
- return max_sampler_rate;
- else
- return -EINVAL;
+ return max_sampler_rate;
}
unsigned long hwsampler_get_sample_overflow_count(unsigned int cpu)
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