[PATCH][v3] sata_fsl: add workaround for data length mismatch on freescale V2 controller

[Xie Shaohui-B21989]

> > +	/* Workaround for data length mismatch errata */
> > +	if (unlikely(hstatus & INT_ON_DATA_LENGTH_MISMATCH)) {
> > +		for (tag = 0; tag < ATA_MAX_QUEUE; tag++) {
> > +			qc = ata_qc_from_tag(ap, tag);
> > +			if (qc && ata_is_atapi(qc->tf.protocol)) {
> > +				u32 hcontrol;
> > +#define HCONTROL_CLEAR_ERROR	(1 << 27)
> 
> shouldn't we have this #define be part of the enum that the other
> HCONTROL_ bits/flags are part of?
[S.H] do you mean this?

#ifdef SATA_FSL_XXX_ERRATUAM
#define HCONTROL_CLEAR_ERROR	(1 << 27)
#endif

Then we need to decide where to put "#define SATA_FSL_XXX_ERRATUAM".

It's only a readable definition of a register bit which avoiding magic number.


Best Regards, 
Shaohui Xie