This fixes descriptor reading of lowspeed devices through ohci not working.
Signed-off-by: Hans de Goede <hdego...@redhat.com>
---
common/usb.c | 17 +++++++++++------
1 file changed, 11 insertions(+), 6 deletions(-)
diff --git a/common/usb.c b/common/usb.c
index 48f0780..4a09583 100644
--- a/common/usb.c
+++ b/common/usb.c
@@ -948,13 +948,18 @@ static int usb_setup_descriptor(struct usb_device *dev,
bool do_read)
* send 64-byte GET-DEVICE-DESCRIPTOR request. Since the descriptor is
* only 18 bytes long, this will terminate with a short packet. But if
* the maxpacket size is 8 or 16 the device may be waiting to transmit
- * some more, or keeps on retransmitting the 8 byte header. */
+ * some more, or keeps on retransmitting the 8 byte header.
+ */
- dev->descriptor.bMaxPacketSize0 = 64; /* Start off at 64 bytes */
- /* Default to 64 byte max packet size */
- dev->maxpacketsize = PACKET_SIZE_64;
- dev->epmaxpacketin[0] = 64;
- dev->epmaxpacketout[0] = 64;
+ if (dev->speed == USB_SPEED_LOW) {
+ dev->descriptor.bMaxPacketSize0 = 8;
+ dev->maxpacketsize = PACKET_SIZE_8;
+ } else {
+ dev->descriptor.bMaxPacketSize0 = 64;
+ dev->maxpacketsize = PACKET_SIZE_64;
+ }
+ dev->epmaxpacketin[0] = dev->descriptor.bMaxPacketSize0;
+ dev->epmaxpacketout[0] = dev->descriptor.bMaxPacketSize0;
if (do_read) {
int err;
--
2.3.6
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