powerpc/perf/hv-24x7: Simplify extracting counter from result buffer

Simplify code that extracts a 24x7 counter from the HCALL's result buffer.

Suggested-by: Joe Perches <joe@perches.com>
Signed-off-by: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

diff --git a/arch/powerpc/perf/hv-24x7.c b/arch/powerpc/perf/hv-24x7.c
index 9d73c693e7924bc44c7aeb2069de9a4b2cd56408..527c8b98e97ee5cf8d8564dc166e05e92ac6ee85 100644 (file)
--- a/arch/powerpc/perf/hv-24x7.c
+++ b/arch/powerpc/perf/hv-24x7.c
@@ -1104,7 +1104,6 @@ static unsigned long single_24x7_request(struct perf_event *event, u64 *count)
        unsigned long ret;
        struct hv_24x7_request_buffer *request_buffer;
        struct hv_24x7_data_result_buffer *result_buffer;
-       struct hv_24x7_result *resb;
 
        BUILD_BUG_ON(sizeof(*request_buffer) > 4096);
        BUILD_BUG_ON(sizeof(*result_buffer) > 4096);
@@ -1125,8 +1124,7 @@ static unsigned long single_24x7_request(struct perf_event *event, u64 *count)
        }
 
        /* process result from hcall */
-       resb = &result_buffer->results[0];
-       *count = be64_to_cpu(resb->elements[0].element_data[0]);
+       *count = be64_to_cpu(result_buffer->results[0].elements[0].element_data[0]);
 
 out:
        put_cpu_var(hv_24x7_reqb);