From: Ramesh Thomas <ramesh.thomas(a)intel.com&gt; Check for presence of DSA sysfs folder /sys/bus/dsa before running commands. If not found print an error message and return -ENOENT Signed-off-by: Ramesh Thomas <ramesh.thomas(a)intel.com&gt; --- accfg/accel-config.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/accfg/accel-config.c b/accfg/accel-config.c index f963fc7..01a1cd9 100644 --- a/accfg/accel-config.c +++ b/accfg/accel-config.c @@ -95,6 +95,12 @@ int main(int argc, const char **argv) return 0; } + if (access("/sys/bus/dsa", R_OK)) { + fprintf(stderr, + "DSA environment not found. Is the driver loaded?\n"); + return -ENOENT; + } + rc = accfg_new(&ctx); if (rc) return 0; -- 2.26.2