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| author |   Felipe Balbi <felipe.balbi@linux.intel.com> | 2016-12-23 14:40:40 +0200 |
|---|---|---|
| committer | Felipe Balbi <felipe.balbi@linux.intel.com> | 2017-01-02 10:55:28 +0200 |
| commit | e71d363d9c611c99fb78f53bfee99616e7fe352c (patch) | |
| tree | 0a1432fad25f7c03c7fd9b5064f5411796e683af /drivers/usb/dwc3 | |
| parent | usb: dwc3: gadget: always unmap EP0 requests (diff) | |
| download | linux-dev-e71d363d9c611c99fb78f53bfee99616e7fe352c.tar.xz linux-dev-e71d363d9c611c99fb78f53bfee99616e7fe352c.zip | |
usb: dwc3: core: avoid Overflow events
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.
Cc: <stable@vger.kernel.org> # v4.9
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Diffstat (limited to 'drivers/usb/dwc3')
| -rw-r--r-- | drivers/usb/dwc3/core.h | 4 |
1 files changed, 1 insertions, 3 deletions
diff --git a/drivers/usb/dwc3/core.h b/drivers/usb/dwc3/core.h index de5a8570be04..7bf8016e1182 100644 --- a/drivers/usb/dwc3/core.h +++ b/drivers/usb/dwc3/core.h @@ -45,9 +45,7 @@ #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 |