linux-kernel - Re: [PATCH] usb: dwc3: core: move dwc3_cache_hwparams before dwc3_alloc_event

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Message-ID: <20121116081719.GA16568@arwen.pp.htv.fi>
Date:	Fri, 16 Nov 2012 10:17:19 +0200
From:	Felipe Balbi <balbi@...com>
To:	Kishon Vijay Abraham I <kishon@...com>
CC:	<balbi@...com>, <gregkh@...uxfoundation.org>,
	<linux-usb@...r.kernel.org>, <linux-omap@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] usb: dwc3: core: move dwc3_cache_hwparams before
 dwc3_alloc_event_buffers

Hi,

On Fri, Nov 16, 2012 at 12:07:54PM +0530, Kishon Vijay Abraham I wrote:
> commit 392142 moved event buffer allocation out of dwc3_core_init() but
> event buffer allocation uses the cached copy of hwparams to determine
> the number of event buffers and the caching is done in dwc3_core_init.
> So moved dwc3_cache_hwparams function before dwc3_alloc_event_buffers so
> that dwc3_alloc_event_buffers sees the correct number of event buffers.
> 
> Signed-off-by: Kishon Vijay Abraham I <kishon@...com>

My bad, what a regression I caused :-)

Greg, can you take this one ?

Signed-off-by: Felipe Balbi <balbi@...com>

> ---
>  drivers/usb/dwc3/core.c |    4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c
> index b923183..88e8d31 100644
> --- a/drivers/usb/dwc3/core.c
> +++ b/drivers/usb/dwc3/core.c
> @@ -356,8 +356,6 @@ static int __devinit dwc3_core_init(struct dwc3 *dwc)
>  
>  	dwc3_core_soft_reset(dwc);
>  
> -	dwc3_cache_hwparams(dwc);
> -
>  	reg = dwc3_readl(dwc->regs, DWC3_GCTL);
>  	reg &= ~DWC3_GCTL_SCALEDOWN_MASK;
>  	reg &= ~DWC3_GCTL_DISSCRAMBLE;
> @@ -498,6 +496,8 @@ static int __devinit dwc3_probe(struct platform_device *pdev)
>  	pm_runtime_get_sync(dev);
>  	pm_runtime_forbid(dev);
>  
> +	dwc3_cache_hwparams(dwc);
> +
>  	ret = dwc3_alloc_event_buffers(dwc, DWC3_EVENT_BUFFERS_SIZE);
>  	if (ret) {
>  		dev_err(dwc->dev, "failed to allocate event buffers\n");
> -- 
> 1.7.9.5
> 

-- 
balbi

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