mirror of https://gitee.com/openkylin/linux.git
7b46681cf4
With legacy PM, drivers themselves were responsible for managing the device's power states and takes care of register states. And they use PCI helper functions to do it. After upgrading to the generic structure, PCI core will take care of required tasks and drivers should do only device-specific operations. In this driver: typhoon_resume() calls typhoon_wakeup() which then calls PCI helper functions pci_set_power_state() and pci_restore_state(). The only other function, using typhoon_wakeup() is typhoon_open(). Thus remove the pci_*() calls from tyhpoon_wakeup() and place them in typhoon_open(), maintaining the order, to retain the normal behavior of the function Now, typhoon_suspend() calls typhoon_sleep() which then calls PCI helper functions pci_enable_wake(), pci_disable_device() and pci_set_power_state(). Other functions: - typhoon_open() - typhoon_close() - typhoon_init_one() are also invoking typhoon_sleep(). Thus, in this case, cannot simply move PCI helper functions call. Hence, define a new function typhoon_sleep_early() which will do all the operations, which typhoon_sleep() was doing before calling PCI helper functions. Now typhoon_sleep() will call typhoon_sleep_early() to do those tasks, hence, the behavior for _open(), _close and _init_one() remain unchanged. And typhon_suspend() only requires typhoon_sleep_early(). Compile-tested only. Signed-off-by: Vaibhav Gupta <vaibhavgupta40@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net> |
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| LICENSES | ||
| arch | ||
| block | ||
| certs | ||
| crypto | ||
| drivers | ||
| fs | ||
| include | ||
| init | ||
| ipc | ||
| kernel | ||
| lib | ||
| mm | ||
| net | ||
| samples | ||
| scripts | ||
| security | ||
| sound | ||
| tools | ||
| usr | ||
| virt | ||
| .clang-format | ||
| .cocciconfig | ||
| .get_maintainer.ignore | ||
| .gitattributes | ||
| .gitignore | ||
| .mailmap | ||
| COPYING | ||
| CREDITS | ||
| Kbuild | ||
| Kconfig | ||
| MAINTAINERS | ||
| Makefile | ||
| README | ||
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.