diff options
Diffstat (limited to 'sound/usb/mixer_scarlett2.c')
| -rw-r--r-- | sound/usb/mixer_scarlett2.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/sound/usb/mixer_scarlett2.c b/sound/usb/mixer_scarlett2.c index 4cddf84db631..8e91fce6274f 100644 --- a/sound/usb/mixer_scarlett2.c +++ b/sound/usb/mixer_scarlett2.c @@ -2329,6 +2329,8 @@ static int scarlett2_usb( struct scarlett2_usb_packet *req, *resp = NULL; size_t req_buf_size = struct_size(req, data, req_size); size_t resp_buf_size = struct_size(resp, data, resp_size); + int retries = 0; + const int max_retries = 5; int err; req = kmalloc(req_buf_size, GFP_KERNEL); @@ -2352,10 +2354,15 @@ static int scarlett2_usb( if (req_size) memcpy(req->data, req_data, req_size); +retry: err = scarlett2_usb_tx(dev, private->bInterfaceNumber, req, req_buf_size); if (err != req_buf_size) { + if (err == -EPROTO && ++retries <= max_retries) { + msleep(5 * (1 << (retries - 1))); + goto retry; + } usb_audio_err( mixer->chip, "%s USB request result cmd %x was %d\n", |