linux-kernel - Re: [PATCH] spi: add missing pci_dev

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Message-ID: <794ed508-3703-3dc6-5c04-f9fec737f277@wanadoo.fr>
Date:   Wed, 23 Feb 2022 21:12:04 +0100
From:   Christophe JAILLET <christophe.jaillet@...adoo.fr>
To:     Mark Brown <broonie@...nel.org>, Qing Wang <wangqing@...o.com>,
        linux-spi@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] spi: add missing pci_dev_put() before return

Le 23/02/2022 à 05:08, Mark Brown a écrit :
> On Mon, 14 Feb 2022 18:00:07 -0800, Qing Wang wrote:
>> From: Wang Qing <wangqing-DGpbCiVdSXo@...lic.gmane.org>
>>
>> pci_get_slot() increases its reference count, the caller must
>> decrement the reference count by calling pci_dev_put()
>>
>>
> 
> Applied to
> 
>     https://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi.git for-next
> 
> Thanks!
> 
> [1/1] spi: add missing pci_dev_put() before return
>        commit: 4d986ffa036a773456476f70bd0fde2fb1330b7d
> 

Hi, not sure that the patch is correct.

Shouldn't the reference be released in the error handling path and in 
pch_spi_release_dma() ?

Instead of *unconditionally* at the end of pch_spi_request_dma()?

CJ