From 6915812bbd109787ebdb865561dc9164d4b01f56 Mon Sep 17 00:00:00 2001 From: Mario Limonciello Date: Thu, 3 Mar 2022 07:13:26 -0600 Subject: [PATCH] thunderbolt: Do not make DROM read success compulsory The USB4 specification doesn't make any requirements that reading a device router's DROM is needed for the operation of the device. Other connection manager solutions don't necessarily read it or gate the usability of the device on whether it was read. So make failures when reading the DROM show warnings but not fail the initialization of the router. Signed-off-by: Mario Limonciello Signed-off-by: Mika Westerberg --- drivers/thunderbolt/switch.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/drivers/thunderbolt/switch.c b/drivers/thunderbolt/switch.c index 294518a..ac87e8b 100644 --- a/drivers/thunderbolt/switch.c +++ b/drivers/thunderbolt/switch.c @@ -2784,10 +2784,8 @@ int tb_switch_add(struct tb_switch *sw) /* read drom */ ret = tb_drom_read(sw); - if (ret) { - dev_err(&sw->dev, "reading DROM failed\n"); - return ret; - } + if (ret) + dev_warn(&sw->dev, "reading DROM failed: %d\n", ret); tb_sw_dbg(sw, "uid: %#llx\n", sw->uid); tb_check_quirks(sw); -- 2.7.4