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(-) > > -- > 2.27.0 >
