[Linux-kernel-mentees] [PATCH v2 0/6] [media] pci: use generic power management
vaibhavgupta40 at gmail.com
Fri Jul 17 04:56:48 UTC 2020
On Fri, Jul 17, 2020 at 09:26:02AM +0530, Vaibhav Gupta wrote:
> Linux Kernel Mentee: Remove Legacy Power Management.
> The purpose of this patch series is to upgrade power management in media
> drivers. This has been done by upgrading .suspend() and .resume() callbacks.
> The upgrade makes sure that the involvement of PCI Core does not change the
> order of operations executed in a driver. Thus, does not change its behavior.
> In general, drivers with legacy PM, .suspend() and .resume() make use of PCI
> helper functions like pci_enable/disable_device_mem(), pci_set_power_state(),
> pci_save/restore_state(), pci_enable/disable_device(), etc. to complete
> their job.
> The conversion requires the removal of those function calls, change the
> callbacks' definition accordingly and make use of dev_pm_ops structure.
> v2: v1 possibly broke cx23885 and cx25821.
v1 didn't break anything in real as patch was not applied. But it could have.
> All patches are compile-tested only.
> Test tools:
> - Compiler: gcc (GCC) 10.1.0
> - allmodconfig build: make -j$(nproc) W=1 all
> Vaibhav Gupta (6):
> sta2x11: use generic power management
> cx23885: use generic power management
> cx25821: use generic power management
> cx88: use generic power management
> meye: use generic power management
> tw68: use generic power management
> drivers/media/pci/cx23885/cx23885-core.c | 3 --
> drivers/media/pci/cx25821/cx25821-core.c | 3 --
> drivers/media/pci/cx88/cx88-video.c | 52 +++++--------------
> drivers/media/pci/meye/meye.c | 15 ++----
> drivers/media/pci/sta2x11/sta2x11_vip.c | 63 ++++++------------------
> drivers/media/pci/tw68/tw68-core.c | 30 +++++------
> 6 files changed, 44 insertions(+), 122 deletions(-)
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