From mboxrd@z Thu Jan 1 00:00:00 1970 From: mkl@pengutronix.de (Marc Kleine-Budde) Date: Mon, 11 Mar 2013 16:58:15 +0100 Subject: [PATCH 02/13] USB: phy: nop: Defer probe if device needs VCC/RESET In-Reply-To: <5110D45A.3040007@ti.com> References: <1359993540-20780-1-git-send-email-rogerq@ti.com> <1359993540-20780-3-git-send-email-rogerq@ti.com> <51109E95.3000307@ti.com> <5110C655.3060305@ti.com> <20130205090920.GH32118@arwen.pp.htv.fi> <5110D45A.3040007@ti.com> Message-ID: <513DFF17.5010207@pengutronix.de> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On 02/05/2013 10:43 AM, Roger Quadros wrote: > On 02/05/2013 11:09 AM, Felipe Balbi wrote: >> On Tue, Feb 05, 2013 at 10:44:05AM +0200, Roger Quadros wrote: >>>>> diff --git a/include/linux/usb/nop-usb-xceiv.h b/include/linux/usb/nop-usb-xceiv.h >>>>> index 3265b61..148d351 100644 >>>>> --- a/include/linux/usb/nop-usb-xceiv.h >>>>> +++ b/include/linux/usb/nop-usb-xceiv.h >>>>> @@ -6,6 +6,10 @@ >>>>> struct nop_usb_xceiv_platform_data { >>>>> enum usb_phy_type type; >>>>> unsigned long clk_rate; >>>>> + >>>>> + /* if set fails with -EPROBE_DEFER if can't get regulator */ >>>>> + unsigned int needs_vcc:1; >>>>> + unsigned int needs_reset:1; >>>> >>>> how about u8 here? >>> >>> Not sure. Bitfields are usually defined as unsigned int. >> >> IIRC the benefit is that compiler can try to optimize those flags. I >> mean, if you have 32 1-bit flags, compiler will combine those in a >> single u32. Someone correct me if I'm wrong. >> > > Yes you are right. Kishon was asking me to use u8 instead of unsigned int, which > I don't think is necessary. AFAIK, it is a norm to use unsigned int when defining > a bitfield. Compilers are known to behave funny with bitfields. I don't mind > using bool for each. In the current version (rogerq/v3.8-usbhost17-dt) of this patch you've put both needs_* into the private data struct and the pdata, but it's only used inside the probe function. regards, Marc -- Pengutronix e.K. | Marc Kleine-Budde | Industrial Linux Solutions | Phone: +49-231-2826-924 | Vertretung West/Dortmund | Fax: +49-5121-206917-5555 | Amtsgericht Hildesheim, HRA 2686 | http://www.pengutronix.de | -------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 263 bytes Desc: OpenPGP digital signature URL: