linux-kernel - RE: [PATCH 1/2 v2] SPI: spi-pxa2xx: Add helpers for regiseters' accessing

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Date:	Wed, 8 Oct 2014 00:46:58 +0000
From:	"Chen, Alvin" <alvin.chen@...el.com>
To:	Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
CC:	Eric Miao <eric.y.miao@...il.com>,
	Russell King <linux@....linux.org.uk>,
	Haojian Zhuang <haojian.zhuang@...il.com>,
	Mark Brown <broonie@...nel.org>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	"linux-spi@...r.kernel.org" <linux-spi@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"Westerberg, Mika" <mika.westerberg@...el.com>,
	"Kweh, Hock Leong" <hock.leong.kweh@...el.com>,
	"Ong, Boon Leong" <boon.leong.ong@...el.com>,
	"Tan, Raymond" <raymond.tan@...el.com>
Subject: RE: [PATCH 1/2 v2] SPI: spi-pxa2xx: Add helpers for regiseters'
 accessing


> I'm okay with the current version, though I have few minor comments below.
> 
> > Introduce helper functions to access the 'SSCR0' and 'SSCR1'.
> >
> 
> Like you said in the summary there are many accessors to many registers, not
> only cr1/cr0. Perhaps, you may extend your commit message.
> 
OK.

> In any case
> Reviewed-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
> 
OK.
> > +
> >  /*
> >   * Read and write LPSS SSP private registers. Caller must first check that
> >   * is_lpss_ssp() returns true before these can be called.
> > @@ -234,7 +301,7 @@ static int null_writer(struct driver_data *drv_data)
> >  	void __iomem *reg = drv_data->ioaddr;
> >  	u8 n_bytes = drv_data->n_bytes;
> >
> > -	if (((read_SSSR(reg) & SSSR_TFL_MASK) == SSSR_TFL_MASK)
> > +	if (pxa2xx_spi_txfifo_full(drv_data)
> >  		|| (drv_data->tx == drv_data->tx_end))
> 
> Just wondering if those two could fit one line.
> 
No, if make the two in one line, it is 84 characters.