diff options
| author | Huang Rui <ray.huang@amd.com> | 2014-01-07 17:45:50 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-05-06 07:55:31 -0700 |
| commit | aede1b94f8ec9bb95d2963ef7881195041c9bf12 (patch) | |
| tree | 16ccec1a4ec4ff4b06eb8f08f78e4d7835746019 /drivers/usb | |
| parent | 2fdb8dd78feec765217e544972e17e1ce3fe9867 (diff) | |
usb: dwc3: fix wrong bit mask in dwc3_event_devt
commit 06f9b6e59661cee510b04513b13ea7927727d758 upstream.
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 ]
Signed-off-by: Huang Rui <ray.huang@amd.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb')
| -rw-r--r-- | drivers/usb/dwc3/core.h | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/usb/dwc3/core.h b/drivers/usb/dwc3/core.h index 27dad993b007..7ab3c9985253 100644 --- a/drivers/usb/dwc3/core.h +++ b/drivers/usb/dwc3/core.h @@ -836,15 +836,15 @@ 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; /** |