Manivannan Sadhasivam manivannan.sadhasivam@linaro.org writes:
On Thu, May 20, 2021 at 12:02:40PM +0200, Greg KH wrote:
On Thu, May 20, 2021 at 12:47:53PM +0300, Kalle Valo wrote:
Hi,
I got several reports that this mhi commit broke ath11k in v5.12.3:
commit 29b9829718c5e9bd68fc1c652f5e0ba9b9a64fed Author: Bhaumik Bhatt bbhatt@codeaurora.org Date: Wed Feb 24 15:23:04 2021 -0800
bus: mhi: core: Process execution environment changes serially[ Upstream commit ef2126c4e2ea2b92f543fae00a2a0332e4573c48 ]
Here are the reports:
https://bugzilla.kernel.org/show_bug.cgi?id=213055
https://bugzilla.kernel.org/show_bug.cgi?id=212187
https://bugs.archlinux.org/task/70849?project=1&string=linux
Interestingly v5.13-rc1 seems to work fine, at least for me, though I have not tested v5.12.3 myself. Can someone revert this commit in the stable release so that people get their wifi working again, please?
How does the mhi bus code relate to a ath11k driver? What bus is that on?
MHI is the transport used by the ath11k driver to work with the WLAN devices over PCIe.
Regarding the bug, I'd suggest to wait for Bhaumik (the author of 29b9829718c5) to comment on the possible commit which needs backporting from mainline.
Ok, but if a quick fix is not available I think we should just revert this in the stable releases. I also got a report that v5.11.21 is broken: