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udev: cancel reset if modem is already back

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Cancel reset if modem is back before reset sequence is started.
When upgrading the modem through fwupd, it will enter fastboot.
Therefore, it disappears from the USB bus for a few ms.
However, the eg25-manager considers this as an issue and
resets the modem a bit later during the upgrade process.
To avoid this, cancel the reset sequence if the modem is already
back before the reset sequence is started. This will take less than 3
seconds.
This commit is contained in:
Dylan Van Assche
2021-12-20 14:07:15 +01:00
committed by Arnaud Ferraris
parent 9cf51b9529
commit 61c89a003a
3 changed files with 25 additions and 12 deletions
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23
src/udev.c
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@@ -12,17 +12,26 @@ static void udev_event_cb(GUdevClient *client, gchar *action, GUdevDevice *devic
{
struct EG25Manager *manager = data;
if (strcmp(action, "unbind") != 0 ||
manager->modem_state == EG25_STATE_RESETTING ||
!manager->modem_usb_id) {
if (!manager->modem_usb_id)
return;
}
if (strcmp(g_udev_device_get_name(device), manager->modem_usb_id) == 0 &&
manager->reset_timer == 0) {
g_message("Lost modem, resetting...");
g_timeout_add_seconds(2, G_SOURCE_FUNC(modem_reset), manager);
strcmp(action, "add") == 0 && manager->schedule_reset_timer != 0) {
g_message("Modem recovered before reset sequence was triggered, cancel reset.");
g_source_remove(manager->schedule_reset_timer);
manager->schedule_reset_timer = 0;
return;
}
if (strcmp(action, "unbind") != 0 ||
manager->modem_state == EG25_STATE_RESETTING ||
manager->complete_reset_timer != 0 ||
strcmp(g_udev_device_get_name(device), manager->modem_usb_id) != 0) {
return;
}
g_message("Lost modem, resetting...");
manager->schedule_reset_timer = g_timeout_add_seconds(3, G_SOURCE_FUNC(modem_reset), manager);
}
void udev_init (struct EG25Manager *manager, toml_table_t *config[])