From: Huang Rui Date: Tue, 7 Jan 2014 09:45:50 +0000 (+0800) Subject: usb: dwc3: fix wrong bit mask in dwc3_event_devt X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=06f9b6e59661cee510b04513b13ea7927727d758;p=GitHub%2Fexynos8895%2Fandroid_kernel_samsung_universal8895.git usb: dwc3: fix wrong bit mask in dwc3_event_devt Around DWC USB3 2.30a release another bit has been added to the Device-Specific Event (DEVT) Event Information (EvtInfo) bitfield. Because of that, what used to be 8 bits long, has become 9 bits long. Per dwc3 2.30a+ spec in the Device-Specific Event (DEVT), the field of Event Information Bits(EvtInfo) uses [24:16] bits, and it has 9 bits not 8 bits. And the following reserved field uses [31:25] bits not [31:24] bits, and it has 7 bits. So in dwc3_event_devt, the bit mask should be: event_info [24:16] 9 bits reserved31_25 [31:25] 7 bits This patch makes sure that newer core releases will work fine with Linux and that we will decode the event information properly on new core releases. [ balbi@ti.com : improve commit log a bit ] Cc: Signed-off-by: Huang Rui Signed-off-by: Felipe Balbi --- diff --git a/drivers/usb/dwc3/core.h b/drivers/usb/dwc3/core.h index f8af8d44af85..69c4583933d1 100644 --- a/drivers/usb/dwc3/core.h +++ b/drivers/usb/dwc3/core.h @@ -815,15 +815,15 @@ struct dwc3_event_depevt { * 12 - VndrDevTstRcved * @reserved15_12: Reserved, not used * @event_info: Information about this event - * @reserved31_24: Reserved, not used + * @reserved31_25: Reserved, not used */ struct dwc3_event_devt { u32 one_bit:1; u32 device_event:7; u32 type:4; u32 reserved15_12:4; - u32 event_info:8; - u32 reserved31_24:8; + u32 event_info:9; + u32 reserved31_25:7; } __packed; /**