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Rameshkumar Sundaram 41b6231291 wifi: ath12k: enforce vdev limit in ath12k_mac_vdev_create() 
[ Upstream commit 448bf7b514 ]

Currently, vdev limit check is performed only in
ath12k_mac_assign_vif_to_vdev(). If the host has already created
maximum number of vdevs for the radio (ar) and a scan request
arrives for the same radio, ath12k_mac_initiate_hw_scan() attempts
to create a vdev without checking the limit, causing firmware asserts.

Centralize the vdev limit guard by moving the check into
ath12k_mac_vdev_create() so that all callers obey the limit.
While doing this, update the condition from
`num_created_vdevs > (TARGET_NUM_VDEVS(ab) - 1)` to
`num_created_vdevs >= TARGET_NUM_VDEVS(ab)` for clarity and to
eliminate unnecessary arithmetic.

Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.4.1-00199-QCAHKSWPL_SILICONZ-1

Fixes: 0d6e6736ed ("wifi: ath12k: scan statemachine changes for single wiphy")
Fixes: 4938ba733e ("wifi: ath12k: modify remain on channel for single wiphy")
Signed-off-by: Rameshkumar Sundaram <rameshkumar.sundaram@oss.qualcomm.com>
Reviewed-by: Vasanthakumar Thiagarajan <vasanthakumar.thiagarajan@oss.qualcomm.com>
Link: https://patch.msgid.link/20251026182254.1399650-2-rameshkumar.sundaram@oss.qualcomm.com
Signed-off-by: Jeff Johnson <jeff.johnson@oss.qualcomm.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
History 2025-12-18 14:02:45 +01:00
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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.