[PATCH] drm/Makefile: Move tiny drivers before native drivers

[Huacai Chen]

Hi, Javier,

On Wed, Nov 8, 2023 at 4:24 PM Javier Martinez Canillas
<javierm at redhat.com> wrote:
>
> Hello,
>
> On Wed, Nov 8, 2023 at 9:14 AM Thomas Zimmermann <tzimmermann at suse.de> wrote:
> >
> > Hi,
> >
>
> [...]
>
> >
> > Relying on linking order is just as unreliable. The usual workaround is
> > to build native drivers as modules. But first, please investigate where
> > the current code fails.
> >
>
> I fully agree with Thomas here. This is just papering over the issue.
>
> I'll read the lengthy thread now to see if I can better understand
> what's going on here.
Have you understood enough now? I really don't want the original patch
to be reverted.

And Jaak, could you please test with the below patch (but keep the
original order in Makefile) and then give me the dmesg output?

diff --git a/drivers/video/aperture.c b/drivers/video/aperture.c
index 561be8feca96..cc2e39fb98f5 100644
--- a/drivers/video/aperture.c
+++ b/drivers/video/aperture.c
@@ -350,21 +350,29 @@ int
aperture_remove_conflicting_pci_devices(struct pci_dev *pdev, const
char *na
        resource_size_t base, size;
        int bar, ret = 0;

-       if (pdev == vga_default_device())
+       printk("DEBUG: remove 1\n");
+
+       if (pdev == vga_default_device()) {
+               printk("DEBUG: primary = true\n");
                primary = true;
+       }

-       if (primary)
+       if (primary) {
+               printk("DEBUG: disable sysfb\n");
                sysfb_disable();
+       }

        for (bar = 0; bar < PCI_STD_NUM_BARS; ++bar) {
                if (!(pci_resource_flags(pdev, bar) & IORESOURCE_MEM))
                        continue;

+               printk("DEBUG: remove 2\n");
                base = pci_resource_start(pdev, bar);
                size = pci_resource_len(pdev, bar);
                aperture_detach_devices(base, size);
        }

+       printk("DEBUG: remove 3\n");
        /*
         * If this is the primary adapter, there could be a VGA device
         * that consumes the VGA framebuffer I/O range. Remove this

[1]  https://lore.kernel.org/lkml/170222766284.86103.11020060769330721008@leemhuis.info/T/#u

> --
> Best regards,
>
> Javier Martinez Canillas
> Core Platforms
> Red Hat
>