linux-kernel - Re: [PATCH net v2] net: ti: icssg-prueth: Add missing icss_iep

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Message-ID: <d7806b70-12f2-405f-a875-61137a9c6490@intel.com>
Date:   Mon, 6 Nov 2023 11:15:46 +0100
From:   Wojciech Drewek <wojciech.drewek@...el.com>
To:     Jan Kiszka <jan.kiszka@...mens.com>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        MD Danish Anwar <danishanwar@...com>
CC:     <netdev@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        "Lopes Ivo, Diogo Miguel (T CED IFD-PT)" <diogo.ivo@...mens.com>,
        Nishanth Menon <nm@...com>,
        "Su, Bao Cheng (RC-CN DF FA R&D)" <baocheng.su@...mens.com>
Subject: Re: [PATCH net v2] net: ti: icssg-prueth: Add missing icss_iep_put to
 error path



On 05.11.2023 10:51, Jan Kiszka wrote:
> From: Jan Kiszka <jan.kiszka@...mens.com>
> 
> Analogously to prueth_remove.
> 
> Fixes: 186734c15886 ("net: ti: icssg-prueth: add packet timestamping and ptp support")
> Fixes: 443a2367ba3c ("net: ti: icssg-prueth: am65x SR2.0 add 10M full duplex support")
> Signed-off-by: Jan Kiszka <jan.kiszka@...mens.com>
> ---
> 
> Changes in v2:
>  - add proper tags
> 
> This was lost from the TI SDK version while ripping out SR1.0 support - 
> which we are currently restoring for upstream.
> 
>  drivers/net/ethernet/ti/icssg/icssg_prueth.c | 3 +++
>  1 file changed, 3 insertions(+)
> 
> diff --git a/drivers/net/ethernet/ti/icssg/icssg_prueth.c b/drivers/net/ethernet/ti/icssg/icssg_prueth.c
> index 6c4b64227ac8..d119b2bb8158 100644
> --- a/drivers/net/ethernet/ti/icssg/icssg_prueth.c
> +++ b/drivers/net/ethernet/ti/icssg/icssg_prueth.c
> @@ -2206,6 +2206,9 @@ static int prueth_probe(struct platform_device *pdev)
>  	if (prueth->pdata.quirk_10m_link_issue)
>  		icss_iep_exit_fw(prueth->iep1);
>  
> +	icss_iep_put(prueth->iep1);
> +	icss_iep_put(prueth->iep0);

We could improve it even more IMO.
If we fail to get prueth->iep0 we go to the free_pool (already done)
If we fail to get prueth->iep1 we should go to something like "put_iep0" which calls icss_iep_put(prueth->iep0);
And in case of exit_iep we can call icss_iep_put(prueth->iep1);

> +
>  free_pool:
>  	gen_pool_free(prueth->sram_pool,
>  		      (unsigned long)prueth->msmcram.va, msmc_ram_size);