@@ -808,6 +808,7 @@ static int dwc2_gadget_fill_isoc_desc(struct dwc2_hsotg_ep *hs_ep,
u32 index;
u32 maxsize = 0;
u32 mask = 0;
+ u8 pid = 0;
maxsize = dwc2_gadget_get_desc_params(hs_ep, &mask);
if (len > maxsize) {
@@ -853,7 +854,11 @@ static int dwc2_gadget_fill_isoc_desc(struct dwc2_hsotg_ep *hs_ep,
((len << DEV_DMA_NBYTES_SHIFT) & mask));
if (hs_ep->dir_in) {
- desc->status |= ((hs_ep->mc << DEV_DMA_ISOC_PID_SHIFT) &
+ if (len)
+ pid = DIV_ROUND_UP(len, hs_ep->ep.maxpacket);
+ else
+ pid = 1;
+ desc->status |= ((pid << DEV_DMA_ISOC_PID_SHIFT) &
DEV_DMA_ISOC_PID_MASK) |
((len % hs_ep->ep.maxpacket) ?
DEV_DMA_SHORT : 0) |
PID bitfield in descriptor should be set based on particular request length, not based on EP's mc value. PID value can't be set to 0 even request length is 0. Signed-off-by: Minas Harutyunyan <hminas@synopsys.com> --- drivers/usb/dwc2/gadget.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-)