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authorMathias Kresin <dev@kresin.me>2017-03-25 12:18:56 +0100
committerMathias Kresin <dev@kresin.me>2017-04-08 14:30:00 +0200
commit136718a3d91bb392de8bc04d9fd59d86b4f460c0 (patch)
treeae53b82cae09b4b760ddb26aaa97a34cbfec0bff /target/linux
parent813efe57e434037fb58bd3e16ebd3a1cfd6ceb82 (diff)
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kernel: update MIPS pci fix to the accepted version
Fix the list order instead of adjusting the controller scan order. Revert the former required changes to the lantiq PCIe driver. Signed-off-by: Mathias Kresin <dev@kresin.me>
Diffstat (limited to 'target/linux')
-rw-r--r--target/linux/generic/patches-4.9/170-MIPS-PCI-add-controllers-before-the-specified-head.patch31
-rw-r--r--target/linux/generic/patches-4.9/170-MIPS-PCI-scan-PCI-controllers-in-reverse-order.patch31
-rw-r--r--target/linux/lantiq/patches-4.9/0001-MIPS-lantiq-add-pcie-driver.patch5
3 files changed, 33 insertions, 34 deletions
diff --git a/target/linux/generic/patches-4.9/170-MIPS-PCI-add-controllers-before-the-specified-head.patch b/target/linux/generic/patches-4.9/170-MIPS-PCI-add-controllers-before-the-specified-head.patch
new file mode 100644
index 0000000000..b6db663fc2
--- /dev/null
+++ b/target/linux/generic/patches-4.9/170-MIPS-PCI-add-controllers-before-the-specified-head.patch
@@ -0,0 +1,31 @@
+From: Mathias Kresin <dev@kresin.me>
+Date: Sun, 26 Mar 2017 19:05:36 +0200
+Subject: MIPS: PCI: add controllers before the specified head
+
+With commit 23dac14d058f ("MIPS: PCI: Use struct list_head lists") new
+controllers are added after the specified head where they were added
+before the specified head previously.
+
+Use list_add_tail to restore the former order.
+
+This patches fixes the following PCI error on lantiq:
+
+ pci 0000:01:00.0: BAR 0: error updating (0x1c000004 != 0x000000)
+
+Fixes: 23dac14d058f ("MIPS: PCI: Use struct list_head lists")
+Signed-off-by: Mathias Kresin <dev@kresin.me>
+---
+ arch/mips/pci/pci-legacy.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/arch/mips/pci/pci-legacy.c
++++ b/arch/mips/pci/pci-legacy.c
+@@ -190,7 +190,7 @@ void register_pci_controller(struct pci_
+ }
+
+ INIT_LIST_HEAD(&hose->list);
+- list_add(&hose->list, &controllers);
++ list_add_tail(&hose->list, &controllers);
+
+ /*
+ * Do not panic here but later - this might happen before console init.
diff --git a/target/linux/generic/patches-4.9/170-MIPS-PCI-scan-PCI-controllers-in-reverse-order.patch b/target/linux/generic/patches-4.9/170-MIPS-PCI-scan-PCI-controllers-in-reverse-order.patch
deleted file mode 100644
index 74b54e93aa..0000000000
--- a/target/linux/generic/patches-4.9/170-MIPS-PCI-scan-PCI-controllers-in-reverse-order.patch
+++ /dev/null
@@ -1,31 +0,0 @@
-From: Mathias Kresin <dev@kresin.me>
-Date: Tue, 14 Mar 2017 22:12:12 +0100
-Subject: [PATCH v2] MIPS: PCI: scan PCI controllers in reverse order
-
-Commit 23dac14d058f ("MIPS: PCI: Use struct list_head lists") changed
-the controller list from reverse to straight order without taking care
-of the changed order for the scan of the recorded PCI controllers.
-
-Traverse the list in reverse order to restore the former behaviour.
-
-This patches fixes the following PCI error on lantiq:
-
- pci 0000:01:00.0: BAR 0: error updating (0x1c000004 != 0x000000)
-
-Fixes: 23dac14d058f ("MIPS: PCI: Use struct list_head lists")
-Signed-off-by: Mathias Kresin <dev@kresin.me>
----
- arch/mips/pci/pci-legacy.c | 2 +-
- 1 file changed, 1 insertion(+), 1 deletion(-)
-
---- a/arch/mips/pci/pci-legacy.c
-+++ b/arch/mips/pci/pci-legacy.c
-@@ -222,7 +222,7 @@ static int __init pcibios_init(void)
- struct pci_controller *hose;
-
- /* Scan all of the recorded PCI controllers. */
-- list_for_each_entry(hose, &controllers, list)
-+ list_for_each_entry_reverse(hose, &controllers, list)
- pcibios_scanbus(hose);
-
- pci_fixup_irqs(pci_common_swizzle, pcibios_map_irq);
diff --git a/target/linux/lantiq/patches-4.9/0001-MIPS-lantiq-add-pcie-driver.patch b/target/linux/lantiq/patches-4.9/0001-MIPS-lantiq-add-pcie-driver.patch
index 16d3f558bc..59d29d838b 100644
--- a/target/linux/lantiq/patches-4.9/0001-MIPS-lantiq-add-pcie-driver.patch
+++ b/target/linux/lantiq/patches-4.9/0001-MIPS-lantiq-add-pcie-driver.patch
@@ -4143,7 +4143,7 @@ Signed-off-by: John Crispin <blogic@openwrt.org>
+
--- a/arch/mips/pci/pci-legacy.c
+++ b/arch/mips/pci/pci-legacy.c
-@@ -300,3 +300,31 @@ char *__init pcibios_setup(char *str)
+@@ -300,3 +300,30 @@ char *__init pcibios_setup(char *str)
return pcibios_plat_setup(str);
return str;
}
@@ -4164,8 +4164,7 @@ Signed-off-by: John Crispin <blogic@openwrt.org>
+ int bus_nr = 0;
+ struct pci_controller *hose;
+
-+ if (!list_empty(&controllers))
-+ hose = list_last_entry(&controllers, struct pci_controller, list);
++ hose = list_first_entry_or_null(&controllers, struct pci_controller, list);
+
+ if (hose != NULL) {
+ if (hose->bus != NULL) {