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Sometimes device recovery fail with this operation. Run test command for many times: echo assert > /sys/kernel/debug/ath12k/wcn7850\ hw2.0_0000\:03\:00.0/simulate_fw_crash While recovery start, ath12k_core_post_reconfigure_recovery() will call ieee80211_restart_hw(), and the restart_work which queued by ieee80211_restart_hw() is running in another thread, it will call into ath12k_mac_op_start() and ath12k_mac_wait_reconfigure(), and the variables ab->recovery_start_count and ab->recovery_start is used in ath12k_mac_wait_reconfigure(), so ath12k need to initialize the variables before queue the restart_work, otherwise ath12k_mac_wait_reconfigure() maybe use the un-initialized variables. Change to initialize the 2 variables earlier and then recovery process become correct. Tested-on: WCN7850 hw2.0 PCI WLAN.HMT.1.0-03427-QCAHMTSWPL_V1.0_V2.0_SILICONZ-1.15378.4 Signed-off-by: Wen Gong <quic_wgong@quicinc.com> Signed-off-by: Kalle Valo <quic_kvalo@quicinc.com> Link: https://lore.kernel.org/r/20230830060850.18881-1-quic_wgong@quicinc.com |
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| arch | ||
| block | ||
| certs | ||
| crypto | ||
| Documentation | ||
| drivers | ||
| fs | ||
| include | ||
| init | ||
| io_uring | ||
| ipc | ||
| kernel | ||
| lib | ||
| LICENSES | ||
| mm | ||
| net | ||
| rust | ||
| samples | ||
| scripts | ||
| security | ||
| sound | ||
| tools | ||
| usr | ||
| virt | ||
| .clang-format | ||
| .cocciconfig | ||
| .get_maintainer.ignore | ||
| .gitattributes | ||
| .gitignore | ||
| .mailmap | ||
| .rustfmt.toml | ||
| COPYING | ||
| CREDITS | ||
| Kbuild | ||
| Kconfig | ||
| MAINTAINERS | ||
| Makefile | ||
| 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 Restructured Text 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.