diff options
Diffstat (limited to 'drivers/usb/core/config.c')
| -rw-r--r-- | drivers/usb/core/config.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/usb/core/config.c b/drivers/usb/core/config.c index 1e3e211..0276db3 100644 --- a/drivers/usb/core/config.c +++ b/drivers/usb/core/config.c @@ -201,6 +201,17 @@ static int usb_parse_endpoint(struct device *ddev, int cfgno, int inum, if (n == 0) n = 9; /* 32 ms = 2^(9-1) uframes */ j = 16; + + /* + * Adjust bInterval for quirked devices. + * This quirk fixes bIntervals reported in + * linear microframes. + */ + if (to_usb_device(ddev)->quirks & + USB_QUIRK_LINEAR_UFRAME_INTR_BINTERVAL) { + n = clamp(fls(d->bInterval), i, j); + i = j = n; + } break; default: /* USB_SPEED_FULL or _LOW */ /* For low-speed, 10 ms is the official minimum. |