Re: [PATCH v2 08/10] scsi: qla2xxx: Use FIELD_GET() to extract PCIe capability fields

[Jonathan Cameron]

On Wed, 13 Sep 2023 15:27:46 +0300
Ilpo Järvinen <ilpo.jarvinen@xxxxxxxxxxxxxxx> wrote:

> Use FIELD_GET() to extract PCIe capability registers field instead of
> custom masking and shifting.
> 
> Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@xxxxxxxxxxxxxxx>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@xxxxxxxxxx>

> ---
>  drivers/scsi/qla2xxx/qla_os.c | 5 +++--
>  1 file changed, 3 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/scsi/qla2xxx/qla_os.c b/drivers/scsi/qla2xxx/qla_os.c
> index 50db08265c51..7e103d711825 100644
> --- a/drivers/scsi/qla2xxx/qla_os.c
> +++ b/drivers/scsi/qla2xxx/qla_os.c
> @@ -5,6 +5,7 @@
>   */
>  #include "qla_def.h"
>  
> +#include <linux/bitfield.h>
>  #include <linux/moduleparam.h>
>  #include <linux/vmalloc.h>
>  #include <linux/delay.h>
> @@ -633,8 +634,8 @@ qla24xx_pci_info_str(struct scsi_qla_host *vha, char *str, size_t str_len)
>  		const char *speed_str;
>  
>  		pcie_capability_read_dword(ha->pdev, PCI_EXP_LNKCAP, &lstat);
> -		lspeed = lstat & PCI_EXP_LNKCAP_SLS;
> -		lwidth = (lstat & PCI_EXP_LNKCAP_MLW) >> 4;
> +		lspeed = FIELD_GET(PCI_EXP_LNKCAP_SLS, lstat);
> +		lwidth = FIELD_GET(PCI_EXP_LNKCAP_MLW, lstat);
>  
>  		switch (lspeed) {
>  		case 1: