[PATCH] mtd: cfi_cmdset_0002: Use status register where possible

[Miquel Raynal]

Hi Joakim,

Please Cc the MTD maintainers, not only the list (get_maintainers.pl).

Joakim Tjernlund <joakim.tjernlund at infinera.com> wrote on Thu, 22 Oct
2020 17:45:06 +0200:

> Commit "mtd: cfi_cmdset_0002: Add support for polling status register"
> added support for polling the status rather than using DQ polling.
> However, status register is used only when DQ polling is missing.
> Lets use status register when available as it is superior to DQ polling.
> 

I will let vignesh comment about the content (looks fine by me) but you will
need a Fixes tag here.

> Signed-off-by: Joakim Tjernlund <joakim.tjernlund at infinera.com>
> Cc: stable at vger.kernel.org
> ---
>  drivers/mtd/chips/cfi_cmdset_0002.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/mtd/chips/cfi_cmdset_0002.c b/drivers/mtd/chips/cfi_cmdset_0002.c
> index a1f3e1031c3d..ee9b322e63bb 100644
> --- a/drivers/mtd/chips/cfi_cmdset_0002.c
> +++ b/drivers/mtd/chips/cfi_cmdset_0002.c
> @@ -117,7 +117,7 @@ static struct mtd_chip_driver cfi_amdstd_chipdrv = {
>  static int cfi_use_status_reg(struct cfi_private *cfi)
>  {
>  	struct cfi_pri_amdstd *extp = cfi->cmdset_priv;
> -	u8 poll_mask = CFI_POLL_STATUS_REG | CFI_POLL_DQ;
> +	u8 poll_mask = CFI_POLL_STATUS_REG;
>  
>  	return extp->MinorVersion >= '5' &&
>  		(extp->SoftwareFeatures & poll_mask) == CFI_POLL_STATUS_REG;

Thanks,
Miquèl