Re: [PATCH 2/2] spi: cadence-quadspi: Fix check condition for DTR ops

From: Mark Brown
Date: Tue Jul 13 2021 - 14:39:52 EST


On Tue, Jul 13, 2021 at 12:57:42PM +0000, Apurva Nandan wrote:

> + f_pdata->dtr = op->cmd.dtr &&
> + (op->addr.dtr || !op->addr.nbytes) &&
> + (op->data.dtr || !op->data.nbytes);

I'm not sure anyone reading this code is going to figure out what it's
doing without thinking about it, the combination of writing the bytes
check with a !, putting it after the check for .dtr and not having any
comments is a bit obscure. Something like

(op->addr.nbytes && op.addr.dtr)

might be a bit clearer, or a comment explicitly spelling it out.

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