linux-kernel - Re: [PATCH 1/1] Fix SD card detection and use correct transfer interval.

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Message-ID: <loom.20131005T140209-999@post.gmane.org>
Date:	Sat, 5 Oct 2013 12:06:10 +0000 (UTC)
From:	Simon Easter <simon.easter@...il.com>
To:	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/1] Fix SD card detection and use correct transfer interval.

Marcus Overhagen <marcus.overhagen <at> gmail.com> writes:

> 
> Increasing the timeout when polling for card status to 100ms
> as used at other places in this driver fixes SD card detection.
> 
> Also use correct interval when doing the interrupt transfer,
> this fixes the "xhci_queue_intr_tx: 74 callbacks suppressed"
> spamming to syslog that was occuring when this driver is used.
> 
> Signed-off-by: Marcus Overhagen <marcus.overhagen <at> gmail.com>
> ---
>  drivers/staging/rts5139/rts51x_transport.c | 8 ++++----
>  1 file changed, 4 insertions(+), 4 deletions(-)
> 
> diff --git a/drivers/staging/rts5139/rts51x_transport.c 
b/drivers/staging/rts5139/rts51x_transport.c
> index 89e4d80..c172f4a 100644
> --- a/drivers/staging/rts5139/rts51x_transport.c
> +++ b/drivers/staging/rts5139/rts51x_transport.c
>  <at>  <at>  -635,12 +635,12  <at>  <at>  int rts51x_get_epc_status(struct 
rts51x_chip *chip, u16 *status)
>  	ep = chip->usb->pusb_dev->ep_in[usb_pipeendpoint(pipe)];
> 
>  	/* fill and submit the URB */
> -	/* We set interval to 1 here, so the polling interval is controlled
> -	 * by our polling thread */
> +	/* Set interval to 10 here to match the endpoint descriptor,
> +	 * the polling interval is controlled by the polling thread */
>  	usb_fill_int_urb(chip->usb->intr_urb, chip->usb->pusb_dev, pipe,
> -			 status, 2, urb_done_completion, &urb_done, 1);
> +			 status, 2, urb_done_completion, &urb_done, 10);
> 
> -	result = rts51x_msg_common(chip, chip->usb->intr_urb, 50);
> +	result = rts51x_msg_common(chip, chip->usb->intr_urb, 100);
> 
>  	return interpret_urb_result(chip, pipe, 2, result,
>  				    chip->usb->intr_urb->actual_length);


Hi Marcus, 
 I'm trying to apply this patch to 3.8.0-18 kernel tree but looks like it 
doesn't want to take (Ubuntu 13.04 stock) 

I don't suppose you have a patch for this version?, not quite sure if 
reading 
the patch file properly but assuming I get changes in what is the  correct 
way to just compile this module and insert into running config?

Thanks

Simon


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