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authorBjorn Helgaas <bhelgaas@google.com>2022-01-26 18:40:01 +0300
committerBjorn Helgaas <bhelgaas@google.com>2022-01-26 19:41:21 +0300
commit66d28b21fe6b3da8d1e9f0a7ba38bc61b6c547e1 (patch)
tree7c05811835998b1feb917b0cf08175732c397126 /arch
parentc035366d9c9fe48d947ee6c43465ab43d42e20f2 (diff)
downloadlinux-66d28b21fe6b3da8d1e9f0a7ba38bc61b6c547e1.tar.xz
PCI/sysfs: Find shadow ROM before static attribute initialization
Ville reported that the sysfs "rom" file for VGA devices disappeared after 527139d738d7 ("PCI/sysfs: Convert "rom" to static attribute"). Prior to 527139d738d7, FINAL fixups, including pci_fixup_video() where we find shadow ROMs, were run before pci_create_sysfs_dev_files() created the sysfs "rom" file. After 527139d738d7, "rom" is a static attribute and is created before FINAL fixups are run, so we didn't create "rom" files for shadow ROMs: acpi_pci_root_add ... pci_scan_single_device pci_device_add pci_fixup_video # <-- new HEADER fixup device_add ... if (grp->is_visible()) pci_dev_rom_attr_is_visible # after 527139d738d7 pci_bus_add_devices pci_bus_add_device pci_fixup_device(pci_fixup_final) pci_fixup_video # <-- previous FINAL fixup pci_create_sysfs_dev_files if (pci_resource_len(pdev, PCI_ROM_RESOURCE)) sysfs_create_bin_file("rom") # before 527139d738d7 Change pci_fixup_video() to be a HEADER fixup so it runs before sysfs static attributes are initialized. Rename the Loongson pci_fixup_radeon() to pci_fixup_video() and make its dmesg logging identical to the others since it is doing the same job. Link: https://lore.kernel.org/r/YbxqIyrkv3GhZVxx@intel.com Fixes: 527139d738d7 ("PCI/sysfs: Convert "rom" to static attribute") Link: https://lore.kernel.org/r/20220126154001.16895-1-helgaas@kernel.org Reported-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Tested-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Cc: stable@vger.kernel.org # v5.13+ Cc: Huacai Chen <chenhuacai@kernel.org> Cc: Jiaxun Yang <jiaxun.yang@flygoat.com> Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@redhat.com> Cc: Borislav Petkov <bp@alien8.de> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: Krzysztof Wilczyński <kw@linux.com>
Diffstat (limited to 'arch')
-rw-r--r--arch/ia64/pci/fixup.c4
-rw-r--r--arch/mips/loongson64/vbios_quirk.c9
-rw-r--r--arch/x86/pci/fixup.c4
3 files changed, 8 insertions, 9 deletions
diff --git a/arch/ia64/pci/fixup.c b/arch/ia64/pci/fixup.c
index acb55a41260d..2bcdd7d3a1ad 100644
--- a/arch/ia64/pci/fixup.c
+++ b/arch/ia64/pci/fixup.c
@@ -76,5 +76,5 @@ static void pci_fixup_video(struct pci_dev *pdev)
}
}
}
-DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_ANY_ID, PCI_ANY_ID,
- PCI_CLASS_DISPLAY_VGA, 8, pci_fixup_video);
+DECLARE_PCI_FIXUP_CLASS_HEADER(PCI_ANY_ID, PCI_ANY_ID,
+ PCI_CLASS_DISPLAY_VGA, 8, pci_fixup_video);
diff --git a/arch/mips/loongson64/vbios_quirk.c b/arch/mips/loongson64/vbios_quirk.c
index 9a29e94d3db1..3115d4de982c 100644
--- a/arch/mips/loongson64/vbios_quirk.c
+++ b/arch/mips/loongson64/vbios_quirk.c
@@ -3,7 +3,7 @@
#include <linux/pci.h>
#include <loongson.h>
-static void pci_fixup_radeon(struct pci_dev *pdev)
+static void pci_fixup_video(struct pci_dev *pdev)
{
struct resource *res = &pdev->resource[PCI_ROM_RESOURCE];
@@ -22,8 +22,7 @@ static void pci_fixup_radeon(struct pci_dev *pdev)
res->flags = IORESOURCE_MEM | IORESOURCE_ROM_SHADOW |
IORESOURCE_PCI_FIXED;
- dev_info(&pdev->dev, "BAR %d: assigned %pR for Radeon ROM\n",
- PCI_ROM_RESOURCE, res);
+ dev_info(&pdev->dev, "Video device with shadowed ROM at %pR\n", res);
}
-DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_ATI, 0x9615,
- PCI_CLASS_DISPLAY_VGA, 8, pci_fixup_radeon);
+DECLARE_PCI_FIXUP_CLASS_HEADER(PCI_VENDOR_ID_ATI, 0x9615,
+ PCI_CLASS_DISPLAY_VGA, 8, pci_fixup_video);
diff --git a/arch/x86/pci/fixup.c b/arch/x86/pci/fixup.c
index 2edd86649468..615a76d70019 100644
--- a/arch/x86/pci/fixup.c
+++ b/arch/x86/pci/fixup.c
@@ -353,8 +353,8 @@ static void pci_fixup_video(struct pci_dev *pdev)
}
}
}
-DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_ANY_ID, PCI_ANY_ID,
- PCI_CLASS_DISPLAY_VGA, 8, pci_fixup_video);
+DECLARE_PCI_FIXUP_CLASS_HEADER(PCI_ANY_ID, PCI_ANY_ID,
+ PCI_CLASS_DISPLAY_VGA, 8, pci_fixup_video);
static const struct dmi_system_id msi_k8t_dmi_table[] = {