linux-kernel - Re: [PATCH v2] ata: ahci_ceva: fix error handling for Xilinx GT PHY support

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Message-ID: <0b57d422-6b7f-43e2-8068-8ebae15dd1bc@kernel.org>
Date: Fri, 16 Feb 2024 07:45:11 +0900
From: Damien Le Moal <dlemoal@...nel.org>
To: Radhey Shyam Pandey <radhey.shyam.pandey@....com>, cassel@...nel.org,
 p.zabel@...gutronix.de, axboe@...nel.dk, michal.simek@....com
Cc: linux-ide@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] ata: ahci_ceva: fix error handling for Xilinx GT PHY
 support

On 2/16/24 03:01, Radhey Shyam Pandey wrote:
> Platform clock and phy error resources are not cleaned up in Xilinx GT PHY
> error path.
> 
> To fix it create a wrapper ceva_ahci_platform_enable_resources() API which

create a wrapper ceva_ahci_platform_enable_resources() API -> introduce the
function ceva_ahci_platform_enable_resources()

> is a customized version of ahci_platform_enable_resources() and inline with
> SATA IP programming sequence it does:
> 
> - Assert SATA reset
> - Program PS GTR phy
> - Bring SATA by de-asserting the reset
> - Wait for GT lane PLL to be locked
> 
> It switches to ceva_ahci_platform_enable_resources() in resume path
> as same SATA programming sequence (as in probe) should be followed.

What is "It" ?

> It also cleanup mix usage of ahci_platform_enable_resources() and custom
> implementation in probe function as both are not required.

Same here, but may be "It" == "this commit" ?
If that is the case, then simply rewrite your sentences simply like:

ceva_ahci_platform_enable_resources() is also used in the resume path
as the same SATA programming sequence (as in probe) should be followed.
Also cleanup the mixed usage of ahci_platform_enable_resources() and custom
implementation in the probe function as both are not required.

> Fixes: 9a9d3abe24bb ("ata: ahci: ceva: Update the driver to support xilinx GT phy")
> Signed-off-by: Radhey Shyam Pandey <radhey.shyam.pandey@....com>

Other than these nits, this looks OK to me.

Reviewed-by: Damien Le Moal <dlemoal@...nel.org>

-- 
Damien Le Moal
Western Digital Research