4.4-stable review patch. If anyone has any objections, please let me know.
------------------ From: Felipe Balbi <felipe.ba...@linux.intel.com> commit e71d363d9c611c99fb78f53bfee99616e7fe352c upstream. Now that we're handling so many transfers at a time and for some dwc3 revisions LPM events *must* be enabled, we can fall into a situation where too many events fire and we start receiving Overflow events. Let's do what XHCI does and allocate a full page for the Event Ring, this will avoid any future issues. Signed-off-by: Felipe Balbi <felipe.ba...@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org> --- drivers/usb/dwc3/core.h | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) --- a/drivers/usb/dwc3/core.h +++ b/drivers/usb/dwc3/core.h @@ -42,9 +42,7 @@ #define DWC3_XHCI_RESOURCES_NUM 2 #define DWC3_SCRATCHBUF_SIZE 4096 /* each buffer is assumed to be 4KiB */ -#define DWC3_EVENT_SIZE 4 /* bytes */ -#define DWC3_EVENT_MAX_NUM 64 /* 2 events/endpoint */ -#define DWC3_EVENT_BUFFERS_SIZE (DWC3_EVENT_SIZE * DWC3_EVENT_MAX_NUM) +#define DWC3_EVENT_BUFFERS_SIZE 4096 #define DWC3_EVENT_TYPE_MASK 0xfe #define DWC3_EVENT_TYPE_DEV 0
