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Re: [PATCH] bus: mhi: Remove auto-start option

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On 2020-11-18 03:57 AM, Manivannan Sadhasivam wrote:
On Wed, Nov 18, 2020 at 07:55:19PM +0800, Carl Huang wrote:
On 2020-11-18 17:31, Manivannan Sadhasivam wrote:
> On Wed, Nov 18, 2020 at 07:43:48AM +0200, Kalle Valo wrote:
> > Manivannan Sadhasivam <manivannan.sadhasivam@xxxxxxxxxx> writes:
> >
> > > From: Loic Poulain <loic.poulain@xxxxxxxxxx>
> > >
> > > There is really no point having an auto-start for channels.
> > > This is confusing for the device drivers, some have to enable the
> > > channels, others don't have... and waste resources (e.g. pre allocated
> > > buffers) that may never be used.
> > >
> > > This is really up to the MHI device(channel) driver to manage the state
> > > of its channels.
> > >
> > > While at it, let's also remove the auto-start option from ath11k mhi
> > > controller.
> > >
> > > Signed-off-by: Loic Poulain <loic.poulain@xxxxxxxxxx>
> > > Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@xxxxxxxxxx>
> > > [mani: clubbed ath11k change]
> > > Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@xxxxxxxxxx>
> >
> > Thanks and feel free to take this to the immutable branch:
> >
> > Acked-by: Kalle Valo <kvalo@xxxxxxxxxxxxxx>
>
> Patch applied to mhi-ath11k-immutable branch and merged into mhi-next.
>
> Thanks,
> Mani
>
Does net/qrtr/mhi.c need changes? I guess now net/qrtr/mhi.c needs to call
mhi_prepare_for_transfer() before transfer.


Yes and the patch is also applied:
https://git.kernel.org/pub/scm/linux/kernel/git/mani/mhi.git/commit/?h=mhi-ath11k-immutable&id=a2e2cc0dbb1121dfa875da1c04f3dff966fec162

Thanks,
Mani

> >
> > --
> > https://patchwork.kernel.org/project/linux-wireless/list/
> >
> > https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches
It looks we forgot to add the mhi_unprepare_from_transfer() equivalent in the remove().

Will send a patch for it today.

Thanks,
Bhaumik
---
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a Linux Foundation Collaborative Project



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