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SubjectRe: [PATCH v1 0/2] video: fbdev: radeonfb: PCI PM framework upgrade and fix-ups.
On Mon, Sep 07, 2020 at 09:55:59AM +0200, Daniel Vetter wrote:
> On Thu, Aug 06, 2020 at 12:52:54PM +0530, Vaibhav Gupta wrote:
> > Linux Kernel Mentee: Remove Legacy Power Management.
> >
> > The original goal of the patch series is to upgrade the power management
> > framework of radeonfb fbdev driver. 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.
> >
> > During this process, it was found that "#if defined(CONFIG_PM)" at line 1434 is
> > redundant. This was introduced in the commit
> > 42ddb453a0cd ("radeon: Conditionally compile PM code").
>
> I do wonder whether it wouldn't be better to just outright delete these,
> we have the drm radeon driver for pretty much all the same hardware ...
> -Daniel
>
Hello Daniel,
I don't have any problem in either way. My priority is to get rid of the
legacy .suspend and .resume pointers from "struct pci_driver" . Hence, modifying
every driver that is using them.

Vaibhav Gupta
> >
> > ------------
> >
> > Before 42ddb453a0cd:
> > $ git show 65122f7e80b5:drivers/video/aty/radeon_pm.c | grep -n "#ifdef\|#if\|#else\|#endif\|#elif\|#ifndef"
> >
> > Based on output in terminal:
> >
> > 547:#ifdef CONFIG_PM
> > |-- 959:#ifdef CONFIG_PPC_PMAC
> > |-- 972:#endif
> > |-- 1291:#ifdef CONFIG_PPC_OF
> > |-- 1301:#endif /* CONFIG_PPC_OF */
> > |-- 1943:#ifdef CONFIG_PPC_OF
> > |-- 2206:#if 0 /* Not ready yet */
> > |-- 2508:#endif /* 0 */
> > |-- 2510:#endif /* CONFIG_PPC_OF */
> > |-- 2648:#ifdef CONFIG_PPC_PMAC
> > |-- 2654:#endif /* CONFIG_PPC_PMAC */
> > |-- 2768:#ifdef CONFIG_PPC_PMAC
> > |-- 2774:#endif /* CONFIG_PPC_PMAC */
> > |-- 2791:#ifdef CONFIG_PPC_OF__disabled
> > |-- 2801:#endif /* CONFIG_PPC_OF */
> > 2803:#endif /* CONFIG_PM */
> >
> > ------------
> >
> > After 42ddb453a0cd:
> > $ git show 42ddb453a0cd:drivers/video/aty/radeon_pm.c | grep -n "#ifdef\|#if\|#else\|#endif\|#elif\|#ifndef"
> >
> > Based on output in terminal:
> >
> > 547:#ifdef CONFIG_PM
> > |-- 959:#ifdef CONFIG_PPC_PMAC
> > |-- 972:#endif
> > |-- 1291:#ifdef CONFIG_PPC_OF
> > |-- 1301:#endif /* CONFIG_PPC_OF */
> > |-- 1430:#if defined(CONFIG_PM)
> > |-- 1431:#if defined(CONFIG_X86) || defined(CONFIG_PPC_PMAC)
> > |-- 1944:#endif
> > |-- 1946:#ifdef CONFIG_PPC_OF
> > |-- 1947:#ifdef CONFIG_PPC_PMAC
> > |-- 2208:#endif
> > |-- 2209:#endif
> > |-- 2211:#if 0 /* Not ready yet */
> > |-- 2513:#endif /* 0 */
> > |-- 2515:#endif /* CONFIG_PPC_OF */
> > |-- 2653:#ifdef CONFIG_PPC_PMAC
> > |-- 2659:#endif /* CONFIG_PPC_PMAC */
> > |-- 2773:#ifdef CONFIG_PPC_PMAC
> > |-- 2779:#endif /* CONFIG_PPC_PMAC */
> > |-- 2796:#ifdef CONFIG_PPC_OF__disabled
> > |-- 2806:#endif /* CONFIG_PPC_OF */
> > 2808:#endif /* CONFIG_PM */
> >
> > ------------
> >
> > This also affected the CONFIG_PPC_OF container (line 1943 at commit 65122f7e80b5)
> >
> > The patch-series fixes it along with PM upgrade.
> >
> > All patches are compile-tested only.
> >
> > Test tools:
> > - Compiler: gcc (GCC) 10.1.0
> > - allmodconfig build: make -j$(nproc) W=1 all
> >
> > Vaibhav Gupta (2):
> > video: fbdev: aty: radeon_pm: remove redundant CONFIG_PM container
> > fbdev: radeonfb:use generic power management
> >
> > drivers/video/fbdev/aty/radeon_base.c | 10 ++++---
> > drivers/video/fbdev/aty/radeon_pm.c | 38 ++++++++++++++++++++-------
> > drivers/video/fbdev/aty/radeonfb.h | 3 +--
> > 3 files changed, 35 insertions(+), 16 deletions(-)
> >
> > --
> > 2.27.0
> >
> > _______________________________________________
> > dri-devel mailing list
> > dri-devel@lists.freedesktop.org
> > https://lists.freedesktop.org/mailman/listinfo/dri-devel
>
> --
> Daniel Vetter
> Software Engineer, Intel Corporation
> http://blog.ffwll.ch

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