Van: Salvatore Bonaccorso <>
> Hi Ben,
> On Thu, Dec 14, 2023 at 09:16:48AM +0000, Ben Mesman | Spark Narrowcasting 
> wrote:
> > The attached patch works on my systems. Is there a way to get this in?
> ...
> We cannot pick changes which are not going to land in Linux upstream
> and then backported to the stable series. So the way to go here is to
> report the bug upstream, along with your proposed change. Candidates
> to reach out are:
> ...
> as it is affecting 6.1.y mention that the fix needs to be backported to 
> various
> stable series at least back 6.1.y and describe which testing you have
> performed.
> Feel free to keep as well the Debian bug in the loop for the report.
> Hope this helps?

Small update on this bug: I reached out and Fred Ai made a patch which is now 
in the mainline kernel:

commit 58aeb5623c2ebdadefe6352b14f8076a7073fea0
Author: Fred Ai <>
Date:   Sat Feb 3 02:29:08 2024 -0800

    mmc: sdhci-pci-o2micro: Fix a warm reboot issue that disk can't be detected 
    Driver shall switch clock source from DLL clock to
    OPE clock when power off card to ensure that card
    can be identified with OPE clock by BIOS.
    Signed-off-by: Fred Ai <>
    Fixes:4be33cf18703 ("mmc: sdhci-pci-o2micro: Improve card input timing at 
SDR104/HS200 mode")
    Signed-off-by: Ulf Hansson <>

I'm still waiting for the patch to land in the stable kernel series (both 6.1 
and 6.6)

Ben Mesman.

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