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From: Bhaumik Bhatt <bbhatt@codeaurora.org>
To: Kalle Valo <kvalo@codeaurora.org>
Cc: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>,
	linux-arm-msm@vger.kernel.org, hemantk@codeaurora.org,
	jhugo@codeaurora.org, linux-kernel@vger.kernel.org,
	loic.poulain@linaro.org, linux-wireless@vger.kernel.org,
	ath11k@lists.infradead.org
Subject: Re: [PATCH v4 4/6] ath11k: set register access length for MHI driver
Date: Mon, 14 Jun 2021 10:49:51 -0700	[thread overview]
Message-ID: <37184e28dcc952ba9ad5ed0dc2c1a6da@codeaurora.org> (raw)
In-Reply-To: <87h7i0juxt.fsf@codeaurora.org>

Hi Kalle,

On 2021-06-14 09:02 AM, Kalle Valo wrote:
> Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> writes:
> 
>> On Thu, May 06, 2021 at 12:51:43PM -0700, Bhaumik Bhatt wrote:
>>> MHI driver requires register space length to add range checks and
>>> prevent memory region accesses outside of that for MMIO space.
>>> Set it before registering the MHI controller.
>>> 
>>> Signed-off-by: Bhaumik Bhatt <bbhatt@codeaurora.org>
>>> Reviewed-by: Hemant Kumar <hemantk@codeaurora.org>
>> 
>> Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
>> 
>> Kalle, should we do immutable branch for this patch or I can pick it 
>> up via MHI
>> tree (if there are no other patches expected from ath11k for this 
>> controller)?
> 
> I'm not expecting any conflicts with this, and if there are, they 
> should
> be easy for Stephen or Linus to fix. So it's easiest to route this via
> your tree. But I'm not giving my ack yet, see below.
> 
> I'm worried that this patchset breaks bisect. Every patch in the
> patchset should not break existing functionality, what if only patches
> 1-3 are included in the tree but not patch 4? Wouldn't ath11k be broken
> then? I didn't review the whole patchset, but I suspect the fix is to
> include the ath11k change in the actual mhi patch which changes the
> functionality. So that way we would not have a separate ath11k patch at
> all.
> 
> Also I'm not able to test this patchset at the moment. Can someone else
> help and do a quick test with QCA6390 to verify these doesn't break
> ath11k?

I have requested someone to try and test this patch series with QCA6390.

I or the testers will get back to you with the test results when they 
are
available.

As far as your concerns go, you can choose to pick patches 1-3 and that 
would
be just fine.

Things will break if patchset 4 is _not_ in place with patchset 6 being 
part of
the tree.

It would, however, be nice to pick the whole series instead and ensure 
that
the functionality MHI introduces for boot-up sanity is in place for any
controllers such as ath11k.

Thanks,
Bhaumik
---
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora 
Forum,
a Linux Foundation Collaborative Project

  reply	other threads:[~2021-06-14 17:49 UTC|newest]

Thread overview: 24+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-05-06 19:51 [PATCH v4 0/6] BHI/BHIe improvements for MHI power purposes Bhaumik Bhatt
2021-05-06 19:51 ` [PATCH v4 1/6] bus: mhi: core: Set BHI/BHIe offsets on power up preparation Bhaumik Bhatt
2021-05-21 13:36   ` Manivannan Sadhasivam
2021-05-06 19:51 ` [PATCH v4 2/6] bus: mhi: core: Set BHI and BHIe pointers to NULL in clean-up Bhaumik Bhatt
2021-05-21 13:37   ` Manivannan Sadhasivam
2021-05-06 19:51 ` [PATCH v4 3/6] bus: mhi: Add MMIO region length to controller structure Bhaumik Bhatt
2021-05-21 13:38   ` Manivannan Sadhasivam
2021-05-06 19:51 ` [PATCH v4 4/6] ath11k: set register access length for MHI driver Bhaumik Bhatt
2021-05-21 13:51   ` Manivannan Sadhasivam
2021-06-14 16:02     ` Kalle Valo
2021-06-14 17:49       ` Bhaumik Bhatt [this message]
2021-06-16 17:38         ` Bhaumik Bhatt
2021-06-18  6:45           ` Manivannan Sadhasivam
2021-06-23 17:29             ` Kalle Valo
2021-06-24  6:09               ` Manivannan Sadhasivam
2021-06-23 17:34         ` Kalle Valo
2021-06-23 21:33           ` Bhaumik Bhatt
2021-05-06 19:51 ` [PATCH v4 5/6] bus: mhi: pci_generic: Set " Bhaumik Bhatt
2021-05-21 13:52   ` Manivannan Sadhasivam
2021-05-06 19:51 ` [PATCH v4 6/6] bus: mhi: core: Add range checks for BHI and BHIe Bhaumik Bhatt
2021-05-07  2:33   ` Hemant Kumar
2021-05-21 13:54   ` Manivannan Sadhasivam
2021-06-25  5:28 ` [PATCH v4 0/6] BHI/BHIe improvements for MHI power purposes Manivannan Sadhasivam
  -- strict thread matches above, loose matches on Subject: below --
2021-05-06 19:32 Bhaumik Bhatt
2021-05-06 19:32 ` [PATCH v4 4/6] ath11k: set register access length for MHI driver Bhaumik Bhatt

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