mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-11-29 15:14:18 +08:00
40d829fb2e
The PIDs for Isochronous data transfers are incorrect for high bandwidth IN endpoints when the request length is less than EP wMaxPacketSize. As per spec correct PIDs for ISOC data transfers are: 1) For request length <= maxpacket - DATA0, 2) For maxpacket < length <= (2 * maxpacket) - DATA1, DATA0 3) For (2 * maxpacket) < length <= (3 * maxpacket) - DATA2, DATA1, DATA0. But driver always sets PCM fields based on wMaxPacketSize due to which DATA2 happens even for small requests. Fix this by setting the PCM field of trb->size depending on request length rather than fixing it to the value depending on wMaxPacketSize. Ideally it shouldn't give any issues as dwc3 will send 0-length packet for next IN token if host sends (even after receiving a short packet). Windows seems to ignore this but with MacOS frame loss observed when using f_uvc. Signed-off-by: Manu Gautam <mgautam@codeaurora.org> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com> |
||
|---|---|---|
| .. | ||
| core.c | ||
| core.h | ||
| debug.h | ||
| debugfs.c | ||
| drd.c | ||
| dwc3-exynos.c | ||
| dwc3-keystone.c | ||
| dwc3-of-simple.c | ||
| dwc3-omap.c | ||
| dwc3-pci.c | ||
| dwc3-st.c | ||
| ep0.c | ||
| gadget.c | ||
| gadget.h | ||
| host.c | ||
| io.h | ||
| Kconfig | ||
| Makefile | ||
| trace.c | ||
| trace.h | ||
| ulpi.c | ||