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| author | Mika Westerberg <mika.westerberg@linux.intel.com> | 2022-02-13 16:16:24 +0100 |
|---|---|---|
| committer | Mika Westerberg <mika.westerberg@linux.intel.com> | 2022-05-05 08:25:16 +0200 |
| commit | 0a2e1667a73fe0c4374ddace925d85a4072d509c (patch) | |
| tree | 76c2f1696905bd4f44378909712fdf8e17a8a73a | |
| parent | thunderbolt: Split setting link width and lane bonding into own functions (diff) | |
| download | linux-0a2e1667a73fe0c4374ddace925d85a4072d509c.tar.xz linux-0a2e1667a73fe0c4374ddace925d85a4072d509c.zip | |
thunderbolt: Ignore port locked error in tb_port_wait_for_link_width()
Sometimes when polling for the port after target link width is changed
we get back port locked notification (because the link actually was
reset and then re-trained). Instead of bailing out we can ignore these
when polling for the width change as this is expected.
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
| -rw-r--r-- | drivers/thunderbolt/switch.c | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/drivers/thunderbolt/switch.c b/drivers/thunderbolt/switch.c index 525be2aa3ad9..561e1d77240e 100644 --- a/drivers/thunderbolt/switch.c +++ b/drivers/thunderbolt/switch.c @@ -1168,10 +1168,17 @@ int tb_port_wait_for_link_width(struct tb_port *port, int width, do { ret = tb_port_get_link_width(port); - if (ret < 0) - return ret; - else if (ret == width) + if (ret < 0) { + /* + * Sometimes we get port locked error when + * polling the lanes so we can ignore it and + * retry. + */ + if (ret != -EACCES) + return ret; + } else if (ret == width) { return 0; + } usleep_range(1000, 2000); } while (ktime_before(ktime_get(), timeout)); |