On Fri, Feb 10, 2012 at 10:12:27AM +0100, Lukasz Majewski wrote:
> This code allows Samsung SoC's to recover its state when
> device is disconnected and connected during transfer.
>
> It is necessary, in such a scenario, to reinitialize the USB core
> to assure correct initial state of the driver.
>
> A simple mechanism with jiffies has been used to perform core reset
> only once.
I'm not sure a softreset is trully needed, unless there is a silicon
errata workaround going on here.
Please describe the problem further.
> Tested with:
> - DFU gadget (various size of the sent data - also packet = MPS)
> - Ethernet gadget (CDC and RNDIS)
> - Multi Function Gadget (g_multi)
>
> HW:
> - Samsung's C210 Universal rev.0
>
> Signed-off-by: Lukasz Majewski <l.majewski@xxxxxxxxxxx>
> Signed-off-by: Kyungmin Park <kyungmin.park@xxxxxxxxxxx>
> ---
> drivers/usb/gadget/s3c-hsotg.c | 30 +++++++++++++++++++-----------
> 1 files changed, 19 insertions(+), 11 deletions(-)
>
> diff --git a/drivers/usb/gadget/s3c-hsotg.c b/drivers/usb/gadget/s3c-hsotg.c
> index 02a3142..ad2ecce 100644
> --- a/drivers/usb/gadget/s3c-hsotg.c
> +++ b/drivers/usb/gadget/s3c-hsotg.c
> @@ -144,7 +144,8 @@ struct s3c_hsotg_ep {
> * @ep0_buff: Buffer for EP0 reply data, if needed.
> * @ctrl_buff: Buffer for EP0 control requests.
> * @ctrl_req: Request for EP0 control packets.
> - * @setup: NAK management for EP0 SETUP
> + * @setup: NAK management for EP0 SETUP
the whitespace cleanup should be amended to the patch which introduced
NAK management.
--
balbi
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