hdt: add debug option

Pass 'debug' on the kernel command line for the output to be more verbose.
Making hdt quiet is really helpful in auto mode, when a lot of information
is flowing.

This fixes #21.

Signed-off-by: Pierre-Alexandre Meyer <pierre@mouraf.org>

1 files changed, 14 insertions, 5 deletions

diff --git a/com32/hdt/hdt-common.c b/com32/hdt/hdt-common.c
index 509aac70..c5433e2f 100644
--- a/com32/hdt/hdt-common.c
+++ b/com32/hdt/hdt-common.c
@@ -55,8 +55,13 @@ void convert_isolinux_filename(char *filename, struct s_hardware *hardware) {
 void detect_parameters(const int argc, const char *argv[],
                        struct s_hardware *hardware)
 {
+  /* Debug mode - make the output more verbose */
+  debug = false;
+
   for (int i = 1; i < argc; i++) {
-    if (!strncmp(argv[i], "modules_pcimap=", 15)) {
+    if (!strncmp(argv[i], "debug", 5)) {
+        debug = true;
+    } else if (!strncmp(argv[i], "modules_pcimap=", 15)) {
       strncpy(hardware->modules_pcimap_path, argv[i] + 15,
         sizeof(hardware->modules_pcimap_path));
       convert_isolinux_filename(hardware->modules_pcimap_path,hardware);
@@ -478,19 +483,23 @@ void detect_pci(struct s_hardware *hardware)
     hardware->nb_pci_devices++;
   }
 
-  printf("PCI: %d devices detected\n", hardware->nb_pci_devices);
-  printf("PCI: Resolving names\n");
+  if (debug) {
+      more_printf("PCI: %d devices detected\n", hardware->nb_pci_devices);
+      more_printf("PCI: Resolving names\n");
+  }
   /* Assigning product & vendor name for each device */
   hardware->pci_ids_return_code =
       get_name_from_pci_ids(hardware->pci_domain, hardware->pciids_path);
 
-  printf("PCI: Resolving class names\n");
+  if (debug)
+      more_printf("PCI: Resolving class names\n");
   /* Assigning class name for each device */
   hardware->pci_ids_return_code =
       get_class_name_from_pci_ids(hardware->pci_domain,
           hardware->pciids_path);
 
-  printf("PCI: Resolving module names\n");
+  if (debug)
+      more_printf("PCI: Resolving module names\n");
   /* Detecting which kernel module should match each device using modules.pcimap*/
   hardware->modules_pcimap_return_code =
       get_module_name_from_pcimap(hardware->pci_domain,