diff options
Diffstat (limited to 'samples')
| -rw-r--r-- | samples/gpio-pci-idio-16.c | 14 |
1 files changed, 10 insertions, 4 deletions
diff --git a/samples/gpio-pci-idio-16.c b/samples/gpio-pci-idio-16.c index cf44ab9..285b600 100644 --- a/samples/gpio-pci-idio-16.c +++ b/samples/gpio-pci-idio-16.c @@ -34,6 +34,8 @@ /* gpio-pci-idio-16 */ #include <stdio.h> +#include <err.h> +#include <stdlib.h> #include "../lib/muser.h" @@ -51,7 +53,11 @@ bar2_access(void *pvt, char * const buf, size_t count, loff_t offset, int main(int argc, char **argv) { - int err; + int ret; + + if (argc != 2) { + err(EXIT_FAILURE, "missing MUSER device UUID"); + } lm_dev_info_t dev_info = { .pci_info = { @@ -66,11 +72,11 @@ int main(int argc, char **argv) .uuid = argv[1], }; - err = lm_ctx_run(&dev_info); - if (err != 0) { + ret = lm_ctx_run(&dev_info); + if (ret != 0) { fprintf(stderr, "failed to realize device emulation: %m\n"); } - return err; + return ret; } /* ex: set tabstop=4 shiftwidth=4 softtabstop=4 expandtab: */ |