linux-kernel - RE: [PATCH 5/6] mtd: spi-nor: add generic flash driver

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Message-ID: <OS0PR01MB5922F173C180E49273BEECB186919@OS0PR01MB5922.jpnprd01.prod.outlook.com>
Date:   Thu, 21 Jul 2022 09:52:48 +0000
From:   Biju Das <biju.das.jz@...renesas.com>
To:     Michael Walle <michael@...le.cc>
CC:     "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-mtd@...ts.infradead.org" <linux-mtd@...ts.infradead.org>,
        "miquel.raynal@...tlin.com" <miquel.raynal@...tlin.com>,
        "p.yadav@...com" <p.yadav@...com>,
        "richard@....at" <richard@....at>,
        "tudor.ambarus@...rochip.com" <tudor.ambarus@...rochip.com>,
        "vigneshr@...com" <vigneshr@...com>
Subject: RE: [PATCH 5/6] mtd: spi-nor: add generic flash driver

Hi Michael Walle,

> Subject: Re: [PATCH 5/6] mtd: spi-nor: add generic flash driver
> 
> Hi,
> 
> >> +
> >> +	/* Fallback to a generic flash described only by its SFDP data. */
> >> +	if (!info) {
> >> +		ret = spi_nor_check_sfdp_signature(nor);
> >> +		if (!ret)
> >> +			info = &spi_nor_generic_flash;
> >> +	}
> >
> > May be this can be combined as
> >
> >  	if (!info && (!spi_nor_check_sfdp_signature(nor)))
> > 		info = &spi_nor_generic_flash;
> 
> While this is the behavior, I don't like (1) calling functions in the
> condition and (2) rely on the && and || semantics, i.e.
> to just call the second part if the first is true/false.

OK fine. I recently got a review comment from mainline for optimizing the number
of lines. That is the reason for suggestion.

Cheers,
biju