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Re: [PATCH] phy: marvell: remove conflicting initializer

From Andrew Lunn <andrew@lunn.ch>
Newsgroups linux.kernel
Subject Re: [PATCH] phy: marvell: remove conflicting initializer
Date 2017-01-23 17:30 +0100
Message-ID <t2PFg-ge-25@gated-at.bofh.it> (permalink)
References <t2LLk-6l3-7@gated-at.bofh.it> <t2Ozw-84K-11@gated-at.bofh.it> <t2PvA-cN-35@gated-at.bofh.it>
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> Great question! I have sent out patches for a couple of actual bugs that
> came from this warning in the past few months.
> 
> I still have a couple of patches that I have not sent out so far,
> I think they are all false-positives, and I have not found a good
> workaround for most of them other than disabling the warning locally.
> 
> Once we get the patches below (or some other workaround) into the
> kernel, we should definitely enable the warning by default.

So it looks like some are from initialising a range of values with
a default value:

[0 ... SH_ETH_MAX_REGISTER_OFFSET - 1] = SH_ETH_OFFSET_INVALID

and then some entries specific values. Maybe the compiler can help out
here? A different warning in this case? And have that at W=1? Could
you ask the gcc folks about this?

Others causes seem like

226 #define DRM_FB_HELPER_DEFAULT_OPS \
227         .fb_check_var   = drm_fb_helper_check_var, \
228         .fb_set_par     = drm_fb_helper_set_par, \
229         .fb_setcmap     = drm_fb_helper_setcmap, \
230         .fb_blank       = drm_fb_helper_blank, \
231         .fb_pan_display = drm_fb_helper_pan_display

static struct fb_ops omap_fb_ops = {
        .owner = THIS_MODULE,
        DRM_FB_HELPER_DEFAULT_OPS,
...
        .fb_pan_display = omap_fbdev_pan_display,

There are at least three drivers which need to replace the
default fb_pan_display. So maybe a different macro?

	Andrew

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Thread

[PATCH] phy: marvell: remove conflicting initializer Arnd Bergmann <arnd@arndb.de> - 2017-01-23 13:20 +0100
  Re: [PATCH] phy: marvell: remove conflicting initializer Andrew Lunn <andrew@lunn.ch> - 2017-01-23 16:20 +0100
    Re: [PATCH] phy: marvell: remove conflicting initializer Arnd Bergmann <arnd@arndb.de> - 2017-01-23 17:20 +0100
      Re: [PATCH] phy: marvell: remove conflicting initializer Andrew Lunn <andrew@lunn.ch> - 2017-01-23 17:30 +0100
  Re: [PATCH] phy: marvell: remove conflicting initializer David Miller <davem@davemloft.net> - 2017-01-24 20:10 +0100

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