From: Nicolas Ferre <nicolas.ferre@atmel.com>
To: <stern@rowland.harvard.edu>, <gregkh@linuxfoundation.org>
Cc: <linux-usb@vger.kernel.org>,
<linux-arm-kernel@lists.infradead.org>,
<linux-kernel@vger.kernel.org>, <plagnioj@jcrosoft.com>,
<klaus.falkner@solectrix.de>, <ludovic.desroches@atmel.com>
Subject: Re: [PATCH] USB: ohci-at91: fix PIO handling in relation with number of ports
Date: Tue, 4 Sep 2012 10:27:22 +0200 [thread overview]
Message-ID: <5045BB6A.8060309@atmel.com> (raw)
In-Reply-To: <1346233758-27009-1-git-send-email-nicolas.ferre@atmel.com>
On 08/29/2012 11:49 AM, Nicolas Ferre :
> If the number of ports present on the SoC/board is not the maximum
> and that the platform data is not filled with all data, there is
> an easy way to mess the PIO setup for this interface.
> This quick fix addresses mis-configuration in USB host platform data
> that is common in at91 boards since commit 0ee6d1e (USB: ohci-at91:
> change maximum number of ports) that did not modified the associatd
> board files.
>
> Reported-by: Klaus Falkner <klaus.falkner@solectrix.de>
> Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
> Cc: Alan Stern <stern@rowland.harvard.edu>
> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
> Cc: linux-usb@vger.kernel.org
> Cc: Stable <stable@vger.kernel.org> [3.4+]
Alan, Greg, gentle ping...
I really would like to seen it landing in stable soon...
Thanks, best regards,
> ---
> drivers/usb/host/ohci-at91.c | 10 ++++++++++
> 1 file changed, 10 insertions(+)
>
> diff --git a/drivers/usb/host/ohci-at91.c b/drivers/usb/host/ohci-at91.c
> index a665b3e..aaa8d2b 100644
> --- a/drivers/usb/host/ohci-at91.c
> +++ b/drivers/usb/host/ohci-at91.c
> @@ -570,6 +570,16 @@ static int __devinit ohci_hcd_at91_drv_probe(struct platform_device *pdev)
>
> if (pdata) {
> at91_for_each_port(i) {
> + /*
> + * do not configure PIO if not in relation with
> + * real USB port on board
> + */
> + if (i >= pdata->ports) {
> + pdata->vbus_pin[i] = -EINVAL;
> + pdata->overcurrent_pin[i] = -EINVAL;
> + break;
> + }
> +
> if (!gpio_is_valid(pdata->vbus_pin[i]))
> continue;
> gpio = pdata->vbus_pin[i];
>
--
Nicolas Ferre
next prev parent reply other threads:[~2012-09-04 8:27 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-08-29 9:49 [PATCH] USB: ohci-at91: fix PIO handling in relation with number of ports Nicolas Ferre
2012-09-04 8:27 ` Nicolas Ferre [this message]
2012-09-04 14:34 ` Alan Stern
2012-09-22 18:34 ` Joachim Eastwood
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=5045BB6A.8060309@atmel.com \
--to=nicolas.ferre@atmel.com \
--cc=gregkh@linuxfoundation.org \
--cc=klaus.falkner@solectrix.de \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-usb@vger.kernel.org \
--cc=ludovic.desroches@atmel.com \
--cc=plagnioj@jcrosoft.com \
--cc=stern@rowland.harvard.edu \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).