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trivial: synaptics: check for removed cascaded devices during scan

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This commit is contained in:
Mario Limonciello 2017-02-01 13:53:34 -06:00
parent 9e868a2cf8
commit 66d383cfed
1 changed files with 40 additions and 13 deletions
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53
plugins/synapticsmst/fu-plugin-synapticsmst.c
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@ -110,7 +110,9 @@ fu_plugin_synaptics_scan_cascade (FuPlugin *plugin,
SynapticsMSTDevice *device,
GError **error)
{
SynapticsMSTDevice *cascade_device;
g_autoptr(SynapticsMSTDevice) cascade_device = NULL;
g_autofree gchar *dev_id_str = NULL;
FuDevice *fu_dev = NULL;
const gchar *aux_node;
guint8 layer = 0;
guint16 rad = 0;
@ -125,22 +127,46 @@ fu_plugin_synaptics_scan_cascade (FuPlugin *plugin,
}
for (j = 0; j < 2; j++) {
if (!synapticsmst_device_scan_cascade_device (device, error, j))
return FALSE;
if (!synapticsmst_device_get_cascade (device))
continue;
layer = synapticsmst_device_get_layer (device) + 1;
rad = synapticsmst_device_get_rad (device) | (j << (2 * (layer - 1)));
cascade_device = synapticsmst_device_new (SYNAPTICSMST_DEVICE_KIND_REMOTE,
aux_node, layer, rad);
dev_id_str = g_strdup_printf ("MST-REMOTE-%s-%u-%u",
aux_node, layer, rad);
fu_dev = fu_plugin_cache_lookup (plugin, dev_id_str);
if (!fu_plugin_synaptics_add_device (plugin, cascade_device, error))
/* run the scan */
if (!synapticsmst_device_scan_cascade_device (device, error, j))
return FALSE;
/* check recursively for more devices */
if (!fu_plugin_synaptics_scan_cascade (plugin, cascade_device, error))
return FALSE;
/* check if cascaded device was found */
if (!synapticsmst_device_get_cascade (device)) {
/* not found, nothing new to see here, move along */
if (fu_dev == NULL)
continue;
/* not found, but should have existed - remove it */
else {
fu_plugin_device_remove (plugin, fu_dev);
fu_plugin_cache_remove (plugin, dev_id_str);
/* don't scan any deeper on this node */
continue;
}
/* Found a device, add it */
} else {
cascade_device = synapticsmst_device_new (SYNAPTICSMST_DEVICE_KIND_REMOTE,
aux_node, layer, rad);
/* new device */
if (fu_dev == NULL) {
g_debug ("Adding remote device %s", dev_id_str);
if (!fu_plugin_synaptics_add_device (plugin, cascade_device, error))
return FALSE;
}
else
g_debug ("Skipping previously added device %s",
dev_id_str);
/* check recursively for more devices */
if (!fu_plugin_synaptics_scan_cascade (plugin, cascade_device, error))
return FALSE;
}
}
return TRUE;
@ -215,7 +241,8 @@ fu_plugin_synapticsmst_enumerate (FuPlugin *plugin,
g_debug ("Skipping previously added device %s", dev_id_str);
/* recursively look for cascade devices */
fu_plugin_synaptics_scan_cascade (plugin, device, error);
if (!fu_plugin_synaptics_scan_cascade (plugin, device, error))
return FALSE;
} while(TRUE);
return TRUE;
}