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authorFelipe Balbi <felipe.balbi@linux.intel.com>2016-12-23 14:40:40 +0200
committerFelipe Balbi <felipe.balbi@linux.intel.com>2017-01-02 10:55:28 +0200
commite71d363d9c611c99fb78f53bfee99616e7fe352c (patch)
tree0a1432fad25f7c03c7fd9b5064f5411796e683af /drivers/usb/dwc3
parentd62145929992f331fdde924d5963ab49588ccc7d (diff)
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.h4
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