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011d4111c8
Observed PCIE device wake up failed after ~120 iterations of soft-reboot test. The error message is "ath10k_pci 0000:01:00.0: failed to wake up device : -110" The call trace as below: ath10k_pci_probe -> ath10k_pci_force_wake -> ath10k_pci_wake_wait -> ath10k_pci_is_awake Once trigger the device to wake up, we will continuously check the RTC state until it returns RTC_STATE_V_ON or timeout. But for QCA99x0 chips, we use wrong value for RTC_STATE_V_ON. Occasionally, we get 0x7 on the fist read, we thought as a failure case, but actually is the right value, also verified with the spec. So fix the issue by changing RTC_STATE_V_ON from 0x5 to 0x7, passed ~2000 iterations. Tested HW: QCA9984 Signed-off-by: Miaoqing Pan <miaoqing@codeaurora.org> Signed-off-by: Kalle Valo <kvalo@codeaurora.org> |
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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.