From: Alex Shi <alex.shi@intel.com>
To: Alan Stern <stern@rowland.harvard.edu>
Cc: gregkh <gregkh@linuxfoundation.org>,
sarah.a.sharp@linux.intel.com,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
linux-usb <linux-usb@vger.kernel.org>
Subject: Re: [PATCH] usb/core: skip unnecessary line IRQ request for USB3
Date: Thu, 15 Mar 2012 22:39:36 +0800 [thread overview]
Message-ID: <4F61FF28.8000505@intel.com> (raw)
In-Reply-To: <Pine.LNX.4.44L0.1203151025300.1366-100000@iolanthe.rowland.org>
>
> This is not a good idea. What happens if some USB-3 controller
> (perhaps a non-xHCI USB-3 controller) doesn't use MSI?
>
current usb3 driver just xhci. but sure it need to modify if non-xhci
usb pops up.
> The right way to avoid registering a legacy interrupt handler is to
> call usb_add_hcd() with irqnum equal to 0.
a good trick! will try it tomorrow.
>
> Alan Stern
>
next prev parent reply other threads:[~2012-03-15 14:39 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-03-15 4:48 [PATCH] usb/core: skip unnecessary line IRQ request for USB3 Alex Shi
2012-03-15 6:21 ` Xu, Andiry
2012-03-15 6:37 ` Alex Shi
2012-03-15 14:29 ` Alan Stern
2012-03-15 14:39 ` Alex Shi [this message]
2012-03-16 8:05 ` Alex Shi
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