selftests/dma: fix invalid array access in printf

The printf statement attempts to print the DMA direction string using
the syntax 'dir[directions]', which is an invalid array access. The
variable 'dir' is an integer, and 'directions' is a char pointer array.
This incorrect syntax should be 'directions[dir]', using 'dir' as the
index into the 'directions' array. Fix this by correcting the array
access from 'dir[directions]' to 'directions[dir]'.

Link: https://lore.kernel.org/r/20251104025234.2363-1-zhangchujun@cmss.chinamobile.com
Signed-off-by: Zhang Chujun <zhangchujun@cmss.chinamobile.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>

diff --git a/tools/testing/selftests/dma/dma_map_benchmark.c b/tools/testing/selftests/dma/dma_map_benchmark.c
index b12f1f9babf8f2ce5cf2ea197aa154fb8b70ab48..b925756373ce357dddb21f0ea6d4d81fe44b195b 100644 (file)
--- a/tools/testing/selftests/dma/dma_map_benchmark.c
+++ b/tools/testing/selftests/dma/dma_map_benchmark.c
@@ -118,7 +118,7 @@ int main(int argc, char **argv)
        }
 
        printf("dma mapping benchmark: threads:%d seconds:%d node:%d dir:%s granule: %d\n",
-                       threads, seconds, node, dir[directions], granule);
+                       threads, seconds, node, directions[dir], granule);
        printf("average map latency(us):%.1f standard deviation:%.1f\n",
                        map.avg_map_100ns/10.0, map.map_stddev/10.0);
        printf("average unmap latency(us):%.1f standard deviation:%.1f\n",