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| author | Maxim Moseychuk <franchesko.salias.hudro.pedros@gmail.com> | 2018-01-04 21:43:03 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-07-03 11:18:44 +0200 |
| commit | 7dc58b124697ea9ed723da03a47d42019f9ee7cb (patch) | |
| tree | 1b9865209861621f8906c64d7299f14af597bbad | |
| parent | f81354e730f685e9dbc9572a7562ca03f0ec8616 (diff) | |
| download | linux-stable-7dc58b124697ea9ed723da03a47d42019f9ee7cb.tar.gz linux-stable-7dc58b124697ea9ed723da03a47d42019f9ee7cb.tar.bz2 linux-stable-7dc58b124697ea9ed723da03a47d42019f9ee7cb.zip | |
usb: do not reset if a low-speed or full-speed device timed out
commit 6e01827ed93947895680fbdad68c072a0f4e2450 upstream.
Some low-speed and full-speed devices (for example, bluetooth)
do not have time to initialize. For them, ETIMEDOUT is a valid error.
We need to give them another try. Otherwise, they will
never be initialized correctly and in dmesg will be messages
"Bluetooth: hci0 command 0x1002 tx timeout" or similars.
Fixes: 264904ccc33c ("usb: retry reset if a device times out")
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Maxim Moseychuk <franchesko.salias.hudro.pedros@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/usb/core/hub.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c index ab1507c9c2b3..12486efb043f 100644 --- a/drivers/usb/core/hub.c +++ b/drivers/usb/core/hub.c @@ -4405,7 +4405,9 @@ hub_port_init (struct usb_hub *hub, struct usb_device *udev, int port1, * reset. But only on the first attempt, * lest we get into a time out/reset loop */ - if (r == 0 || (r == -ETIMEDOUT && retries == 0)) + if (r == 0 || (r == -ETIMEDOUT && + retries == 0 && + udev->speed > USB_SPEED_FULL)) break; } udev->descriptor.bMaxPacketSize0 = |