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-rw-r--r--drivers/thunderbolt/eeprom.c9
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/thunderbolt/eeprom.c b/drivers/thunderbolt/eeprom.c
index 308b6e17c88a..fe2f00ceafc5 100644
--- a/drivers/thunderbolt/eeprom.c
+++ b/drivers/thunderbolt/eeprom.c
@@ -333,6 +333,15 @@ static int tb_drom_parse_entry_port(struct tb_switch *sw,
int res;
enum tb_port_type type;
+ /*
+ * Some DROMs list more ports than the controller actually has
+ * so we skip those but allow the parser to continue.
+ */
+ if (header->index > sw->config.max_port_number) {
+ dev_info_once(&sw->dev, "ignoring unnecessary extra entries in DROM\n");
+ return 0;
+ }
+
port = &sw->ports[header->index];
port->disabled = header->port_disabled;
if (port->disabled)