From: Leon Romanovsky <leon@kernel.org>
To: Harini Katakam <harini.katakam@amd.com>
Cc: nicolas.ferre@microchip.com, davem@davemloft.net,
richardcochran@gmail.com, claudiu.beznea@microchip.com,
andrei.pistirica@microchip.com, kuba@kernel.org,
edumazet@google.com, pabeni@redhat.com, netdev@vger.kernel.org,
linux-kernel@vger.kernel.org, michal.simek@amd.com,
harinikatakamlinux@gmail.com
Subject: Re: [PATCH net-next v4 1/3] net: macb: Update gem PTP support check
Date: Thu, 30 Mar 2023 10:06:42 +0300 [thread overview]
Message-ID: <20230330070642.GR831478@unreal> (raw)
In-Reply-To: <20230330050809.19180-2-harini.katakam@amd.com>
On Thu, Mar 30, 2023 at 10:38:07AM +0530, Harini Katakam wrote:
> There are currently two checks for PTP functionality - one on GEM
> capability and another on the kernel config option. Combine them
> into a single function as there's no use case where gem_has_ptp is
> TRUE and MACB_USE_HWSTAMP is false.
>
> Signed-off-by: Harini Katakam <harini.katakam@amd.com>
> ---
> v4:
> Fixed error introduced in 1/3 in v3:
> Reported-by: kernel test robot <lkp@intel.com>
> Link: https://lore.kernel.org/oe-kbuild-all/202303280600.LarprmhI-lkp@intel.com/
> v3:
> New patch
>
> drivers/net/ethernet/cadence/macb.h | 2 +-
> drivers/net/ethernet/cadence/macb_main.c | 4 ++--
> 2 files changed, 3 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/net/ethernet/cadence/macb.h b/drivers/net/ethernet/cadence/macb.h
> index c1fc91c97cee..b6c5ecbd572c 100644
> --- a/drivers/net/ethernet/cadence/macb.h
> +++ b/drivers/net/ethernet/cadence/macb.h
> @@ -1363,7 +1363,7 @@ static inline bool macb_is_gem(struct macb *bp)
>
> static inline bool gem_has_ptp(struct macb *bp)
> {
> - return !!(bp->caps & MACB_CAPS_GEM_HAS_PTP);
> + return (IS_ENABLED(CONFIG_MACB_USE_HWSTAMP) && (!!(bp->caps & MACB_CAPS_GEM_HAS_PTP)));
Brackets and double !! are not needed.
return IS_ENABLED(CONFIG_MACB_USE_HWSTAMP) && (bp->caps & MACB_CAPS_GEM_HAS_PTP);
> }
>
> /**
> diff --git a/drivers/net/ethernet/cadence/macb_main.c b/drivers/net/ethernet/cadence/macb_main.c
> index f77bd1223c8f..eab2d41fa571 100644
> --- a/drivers/net/ethernet/cadence/macb_main.c
> +++ b/drivers/net/ethernet/cadence/macb_main.c
> @@ -3889,17 +3889,17 @@ static void macb_configure_caps(struct macb *bp,
> dcfg = gem_readl(bp, DCFG2);
> if ((dcfg & (GEM_BIT(RX_PKT_BUFF) | GEM_BIT(TX_PKT_BUFF))) == 0)
> bp->caps |= MACB_CAPS_FIFO_MODE;
> -#ifdef CONFIG_MACB_USE_HWSTAMP
> if (gem_has_ptp(bp)) {
> if (!GEM_BFEXT(TSU, gem_readl(bp, DCFG5)))
> dev_err(&bp->pdev->dev,
> "GEM doesn't support hardware ptp.\n");
> else {
> +#ifdef CONFIG_MACB_USE_HWSTAMP
> bp->hw_dma_cap |= HW_DMA_CAP_PTP;
> bp->ptp_info = &gem_ptp_info;
> +#endif
> }
> }
> -#endif
> }
>
> dev_dbg(&bp->pdev->dev, "Cadence caps 0x%08x\n", bp->caps);
> --
> 2.17.1
>
next prev parent reply other threads:[~2023-03-30 7:07 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-03-30 5:08 [PATCH net-next v4 0/3] Macb PTP minor updates Harini Katakam
2023-03-30 5:08 ` [PATCH net-next v4 1/3] net: macb: Update gem PTP support check Harini Katakam
2023-03-30 7:06 ` Leon Romanovsky [this message]
2023-03-30 5:08 ` [PATCH net-next v4 2/3] net: macb: Enable PTP unicast Harini Katakam
2023-03-30 5:08 ` [PATCH net-next v4 3/3] net: macb: Optimize reading HW timestamp Harini Katakam
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