linux-kernel - Re: [PATCH] ath11k: use MHI provided APIs to allocate and free MHI controller

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Message-ID: <d06eae092fcb0c3319ab793c8063a12d@codeaurora.org>
Date:   Tue, 17 Nov 2020 09:17:24 -0800
From:   Bhaumik Bhatt <bbhatt@...eaurora.org>
To:     Kalle Valo <kvalo@...eaurora.org>
Cc:     manivannan.sadhasivam@...aro.org, linux-arm-msm@...r.kernel.org,
        hemantk@...eaurora.org, jhugo@...eaurora.org,
        linux-kernel@...r.kernel.org, ath11k@...ts.infradead.org,
        linux-wireless@...r.kernel.org, kvalo=codeaurora.org@...eaurora.org
Subject: Re: [PATCH] ath11k: use MHI provided APIs to allocate and free MHI
 controller

On 2020-11-16 11:14 PM, Kalle Valo wrote:
> Bhaumik Bhatt <bbhatt@...eaurora.org> writes:
> 
>> Use MHI provided APIs to allocate and free MHI controller to
>> improve MHI host driver handling.
> 
> How does it improve the handling?
> 
Main reason is we want to ensure the MHI controller is zero-initialized 
and
we want to mandate it as it is better to have it under our control in 
case
we also want to allocate and track peripheral data/memory related to the 
MHI
controller.
>> This also fixes a memory leak as the MHI controller was allocated but
>> never freed.
>> 
>> Signed-off-by: Bhaumik Bhatt <bbhatt@...eaurora.org>
>> ---
>>  drivers/net/wireless/ath/ath11k/mhi.c | 7 ++++---
>>  1 file changed, 4 insertions(+), 3 deletions(-)
> 
> For ath11k patches please CC ath11k and linux-wireless lists so that
> patchwork sees it. So you need to resend this.
> 
> Is this a new API? I need to understand if there are any dependencies
> between mhi and ath trees, or if I can apply this directly to my 
> ath.git
> tree.

This one should be dependent on the patch [1] which exists on mainline 
and
should already part of your tree if you're on any 5.10 RC.

[1] 
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/drivers/bus/mhi?h=v5.10-rc4&id=f42dfbe8f712127031e7b9bc938a1c33cec2ff57

Thanks,
Bhaumik
---
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