# Re: \[PATCH\] ata: hpt366: fix incorrect mask when checking at cmd\_high\_time

- From: Bartlomiej Zolnierkiewicz \<hidden\>
- Date: 2016-07-12 11:28:34 
- List: lkml
- Page: https://ratatoskr.run/lkml/2016/07/4792809
- Thread: https://ratatoskr.run/linux-ide/2016/07/4792802/t.md

```text

Hi,

On Tuesday, July 12, 2016 12:16:19 PM Colin King wrote:
> From: Colin Ian King <redacted>
> 
> According to the HPT366 data sheet, PCI config space dword 0x40-0x43
> bits 11:8 specify the primary drive cmd_high_time, however,
> currently just 3 bits of the 4 are being used because the mask
> is 0x700 and not 0x0f00.  Fix the mask, allowing for the 40MHz clock
> to be detected.
> 
> Signed-off-by: Colin Ian King <redacted>

Acked-by: Bartlomiej Zolnierkiewicz <redacted>

Thanks for the patch, could you also fix also the old driver
(drivers/ide/hpt366.c)?

Best regards,
--
Bartlomiej Zolnierkiewicz
Samsung R&D Institute Poland
Samsung Electronics

> ---
>  drivers/ata/pata_hpt366.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/ata/pata_hpt366.c b/drivers/ata/pata_hpt366.c
> index e5fb752..a219a50 100644
> --- a/drivers/ata/pata_hpt366.c
> +++ b/drivers/ata/pata_hpt366.c
> @@ -368,7 +368,7 @@ static int hpt36x_init_one(struct pci_dev *dev, const struct pci_device_id *id)
>  
>  	/* PCI clocking determines the ATA timing values to use */
>  	/* info_hpt366 is safe against re-entry so we can scribble on it */
> -	switch ((reg1 & 0x700) >> 8) {
> +	switch ((reg1 & 0xf00) >> 8) {
>  	case 9:
>  		hpriv = &hpt366_40;
>  		break;
```