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Baochen Qiang e2ee86fefe wifi: ath12k: fix preferred hardware mode calculation 
[ Upstream commit 7f852de000 ]

For single pdev device like WCN7850/QCC2072, preferred_hw_mode is
initialized to WMI_HOST_HW_MODE_SINGLE. Later when firmware sends
supported modes to host, each mode is compared with the initial one
and if the priority of the new mode is higher, update the parameter
and store mode capability.

For WCN7850, this does not result in issue, as one of the supported
mode indeed has a higher priority. However the only available mode of
QCC2072 at this stage is WMI_HOST_HW_MODE_SINGLE, which fails the
comparison, hence mode capability is not stored. Subsequently driver
initialization fails.

Fix it by accepting a mode with the same priority.

Tested-on: WCN7850 hw2.0 PCI WLAN.HMT.1.1.c5-00302-QCAHMTSWPL_V1.0_V2.0_SILICONZ-1.115823.3

Signed-off-by: Baochen Qiang <baochen.qiang@oss.qualcomm.com>
Reviewed-by: Vasanthakumar Thiagarajan <vasanthakumar.thiagarajan@oss.qualcomm.com>
Link: https://patch.msgid.link/20260112-ath12k-support-qcc2072-v2-4-fc8ce1e43969@oss.qualcomm.com
Signed-off-by: Jeff Johnson <jeff.johnson@oss.qualcomm.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
History 2026-03-04 07:21:13 -05:00
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README 

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the reStructuredText markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.