Store the best_firmware_version in struct alsa_card

src/alsa.c

@@ -4,6 +4,7 @@
 #include <sys/inotify.h>
 
 #include "alsa.h"
+#include "scarlett2-firmware.h"
 #include "stringhelper.h"
 #include "window-iface.h"
 
@@ -778,6 +779,7 @@ static void alsa_scan_cards(void) {
     alsa_subscribe(card);
     alsa_get_usbid(card);
     alsa_get_serial_number(card);
+    card->best_firmware_version = scarlett2_get_best_firmware_version(card->pid);
 
     if (card->serial) {
 

src/alsa.h

@@ -155,6 +155,7 @@ struct alsa_card {
   uint32_t            pid;
   char               *serial;
   char               *name;
+  int                 best_firmware_version;
   snd_ctl_t          *handle;
   struct pollfd       pfd;
   GArray             *elems;

src/iface-update.c

@@ -25,10 +25,7 @@ GtkWidget *create_iface_update_main(struct alsa_card *card) {
   gtk_widget_add_css_class(w, "window-title");
   gtk_box_append(GTK_BOX(content), w);
 
-  uint32_t best_firmware_version =
+  if (!card->best_firmware_version) {
-    scarlett2_get_best_firmware_version(card->pid);
-
-  if (!best_firmware_version) {
     w = gtk_label_new(NULL);
     gtk_label_set_markup(
       GTK_LABEL(w),

src/window-startup.c

@@ -5,7 +5,6 @@
 #include "device-update-firmware.h"
 #include "gtkhelper.h"
 #include "scarlett2.h"
-#include "scarlett2-firmware.h"
 #include "scarlett2-ioctls.h"
 #include "widget-boolean.h"
 #include "window-startup.h"
@@ -273,10 +272,8 @@ static void add_reset_actions(
     return;
 
   int firmware_version = alsa_get_elem_value(firmware_elem);
-  uint32_t best_firmware_version =
-    scarlett2_get_best_firmware_version(card->pid);
 
-  if (firmware_version >= best_firmware_version)
+  if (firmware_version >= card->best_firmware_version)
     return;
 
   char *s = g_strdup_printf(
@@ -284,7 +281,7 @@ static void add_reset_actions(
     "factory default settings and update the firmware from version "
     "%d to %d.",
     firmware_version,
-    best_firmware_version
+    card->best_firmware_version
   );
   add_reset_action(
     card,