From: Andrew Lunn <andrew@lunn.ch>
To: Roger Quadros <rogerq@kernel.org>
Cc: davem@davemloft.net, kuba@kernel.org, edumazet@google.com,
pabeni@redhat.com, vigneshr@ti.com, linux-omap@vger.kernel.org,
netdev@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH v2 1/4] net: ethernet: ti: am65-cpsw: Fix set channel operation
Date: Tue, 22 Nov 2022 01:58:54 +0100 [thread overview]
Message-ID: <Y3wezv4J9NTSU4R3@lunn.ch> (raw)
In-Reply-To: <20221121142300.9320-2-rogerq@kernel.org>
On Mon, Nov 21, 2022 at 04:22:57PM +0200, Roger Quadros wrote:
> The set channel operation "ethtool -L tx <n>" broke with
> the recent suspend/resume changes.
>
> Revert back to original driver behaviour of not freeing
> the TX/RX IRQs at am65_cpsw_nuss_common_stop(). We will
> now free them only on .suspend() as we need to release
> the DMA channels (as DMA looses context) and re-acquiring
> them on .resume() may not necessarily give us the same
> IRQs.
>
> Introduce am65_cpsw_nuss_remove_rx_chns() which is similar
> to am65_cpsw_nuss_remove_tx_chns() and invoke them both in
> .suspend().
>
> At .resume() call am65_cpsw_nuss_init_rx/tx_chns() to
> acquire the DMA channels.
>
> To as IRQs need to be requested after knowing the IRQ
> numbers, move am65_cpsw_nuss_ndev_add_tx_napi() call to
> am65_cpsw_nuss_init_tx_chns().
It is probably easier to review if you first do a revert and then add
the new code to make suspend/resume work.
Andrew
next prev parent reply other threads:[~2022-11-22 0:59 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-11-21 14:22 [PATCH v2 0/4] net: ethernet: ti: am65-cpsw: Fix set channel operation Roger Quadros
2022-11-21 14:22 ` [PATCH v2 1/4] " Roger Quadros
2022-11-21 17:50 ` Maciej Fijalkowski
2022-11-22 17:30 ` Roger Quadros
2022-11-22 0:58 ` Andrew Lunn [this message]
2022-11-22 17:31 ` Roger Quadros
2022-11-21 14:22 ` [PATCH v2 2/4] net: ethernet: ti: am65-cpsw-nuss: Remove redundant ALE_CLEAR Roger Quadros
2022-11-21 17:51 ` Maciej Fijalkowski
2022-11-22 1:02 ` Andrew Lunn
2022-11-22 11:46 ` Maciej Fijalkowski
2022-11-21 14:22 ` [PATCH v2 3/4] net: ethernet: ti: am65-cpsw: Restore ALE only if any interface was up Roger Quadros
2022-11-21 14:23 ` [PATCH v2 4/4] net: ethernet: ti: cpsw_ale: optimize cpsw_ale_restore() Roger Quadros
2022-11-21 17:11 ` [PATCH v2 0/4] net: ethernet: ti: am65-cpsw: Fix set channel operation Maciej Fijalkowski
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