Hello.
On 08/12/2014 08:46 PM, Bin Liu wrote:
CPPI TX does not transmit ZLP for TX transfers which
- transfer size is multiple of EP packet size,
- and URB_ZERO_PACKET is set in urb->transfer_flags.
The fix is transmitting the ZLP using PIO mode after the CPPI TX is
done.
Validated using the following usbtest write case for MUSB host mode.
# testusb -t1 -c1
Signed-off-by: Bin Liu <[email protected]>
---
drivers/usb/musb/musb_cppi41.c | 15 +++++++++++++--
1 file changed, 13 insertions(+), 2 deletions(-)
diff --git a/drivers/usb/musb/musb_cppi41.c b/drivers/usb/musb/musb_cppi41.c
index 5989def..e9a0e54 100644
--- a/drivers/usb/musb/musb_cppi41.c
+++ b/drivers/usb/musb/musb_cppi41.c
@@ -39,6 +39,7 @@ struct cppi41_dma_channel {
u32 transferred;
u32 packet_sz;
struct list_head tx_check;
+ u32 tx_zlp;
Why not *bool"?
WBR, Sergei
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