From: Jerry Huang <chang-ming.hu...@freescale.com>
For all mpc85xx DS/MDS boards, we should check the return value from
function "fsl_add_bridge", otherwise, when pcie node status is disabled,
the kernel will panic when perform the function "pci_find_hose_for_OF_device"
because the hose controller is NULL.
below is the call trace log:
NIP: c05bca80 LR: c05bca78 CTR: c000ec54
REGS: c0615eb0 TRAP: 0300 Not tainted (3.2.0-rc3-00090-gfa8cbaa-dirty)
MSR: 00021000 <CE,ME> CR: 84044022 XER: 20000000
DEAR: 00000110, ESR: 00000000
TASK = c05e8380[0] 'swapper' THREAD: c0614000
GPR00: c05bca70 c0615f60 c05e8380 00000000 c0550a08 ffffffff c0613140 c061314c
GPR08: 00000000 00000000 00000286 c0620000 84044022 1009d368 00000000 00000000
GPR16: c0000a00 00000014 3fffffff 03ff9000 00000015 7ff3a724 c0614000 00000000
GPR24: 00000000 00000000 00008000 c0550a08 c0534808 efbe3834 00000000 ffffffff
NIP [c05bca80] p1022_ds_setup_arch+0xa8/0x1ac
LR [c05bca78] p1022_ds_setup_arch+0xa0/0x1ac
Call Trace:
[c0615f60] [c05bca70] p1022_ds_setup_arch+0x98/0x1ac (unreliable)
[c0615fb0] [c05b88e0] setup_arch+0x1e8/0x224
[c0615fc0] [c05b4524] start_kernel+0x84/0x2d8
[c0615ff0] [c00003c4] skpinv+0x2b0/0x2ec
Instruction dump:
5400033e 7f80d000 7fa3eb78 40be0010 38800001 4bffedf1 48000008 4bffede9
7fa3eb78 4ba53119 7f64db78 7c691b78
81830114 7f85e378 8149010c
---[ end trace 31fd0ba7d8756001 ]---
Kernel panic - not syncing: Attempted to kill the idle task!
Call Trace:
[c0615d90] [c0007b74] show_stack+0x44/0x154 (unreliable)
[c0615dd0] [c04495b8] panic+0xa4/0x1d4
[c0615e20] [c003e7b8] do_exit+0x588/0x614
[c0615e70] [c000a00c] die+0xc8/0x198
[c0615e90] [c0011a1c] bad_page_fault+0xb4/0xfc
[c0615ea0] [c000e2e0] handle_page_fault+0x7c/0x80
--- Exception: 300 at p1022_ds_setup_arch+0xa8/0x1ac
LR = p1022_ds_setup_arch+0xa0/0x1ac
[c0615f60] [c05bca70] p1022_ds_setup_arch+0x98/0x1ac (unreliable)
[c0615fb0] [c05b88e0] setup_arch+0x1e8/0x224
[c0615fc0] [c05b4524] start_kernel+0x84/0x2d8
[c0615ff0] [c00003c4] skpinv+0x2b0/0x2ec
Signed-off-by: Jerry Huang <chang-ming.hu...@freescale.com>
---
arch/powerpc/platforms/85xx/corenet_ds.c | 5 ++++-
arch/powerpc/platforms/85xx/mpc8536_ds.c | 13 +++++++++----
arch/powerpc/platforms/85xx/mpc85xx_ds.c | 13 +++++++++----
arch/powerpc/platforms/85xx/mpc85xx_mds.c | 13 +++++++++----
arch/powerpc/platforms/85xx/p1022_ds.c | 13 +++++++++----
arch/powerpc/platforms/86xx/mpc86xx_hpcn.c | 14 ++++++++++----
6 files changed, 50 insertions(+), 21 deletions(-)
diff --git a/arch/powerpc/platforms/85xx/corenet_ds.c
b/arch/powerpc/platforms/85xx/corenet_ds.c
index c48b661..9d72e3a 100644
--- a/arch/powerpc/platforms/85xx/corenet_ds.c
+++ b/arch/powerpc/platforms/85xx/corenet_ds.c
@@ -85,8 +85,11 @@ void __init corenet_ds_setup_arch(void)
for_each_node_by_type(np, "pci") {
if (of_device_is_compatible(np, "fsl,p4080-pcie") ||
of_device_is_compatible(np, "fsl,qoriq-pcie-v2.2")) {
- fsl_add_bridge(np, 0);
+ if (fsl_add_bridge(np, 0) < 0)
+ continue;
hose = pci_find_hose_for_OF_device(np);
+ if (!hose)
+ continue;
max = min(max, hose->dma_window_base_cur +
hose->dma_window_size);
}
diff --git a/arch/powerpc/platforms/85xx/mpc8536_ds.c
b/arch/powerpc/platforms/85xx/mpc8536_ds.c
index 9ee6455..ee2ebbb 100644
--- a/arch/powerpc/platforms/85xx/mpc8536_ds.c
+++ b/arch/powerpc/platforms/85xx/mpc8536_ds.c
@@ -82,12 +82,17 @@ static void __init mpc8536_ds_setup_arch(void)
of_device_is_compatible(np, "fsl,mpc8548-pcie")) {
struct resource rsrc;
of_address_to_resource(np, 0, &rsrc);
- if ((rsrc.start & 0xfffff) == 0x8000)
- fsl_add_bridge(np, 1);
- else
- fsl_add_bridge(np, 0);
+ if ((rsrc.start & 0xfffff) == 0x8000) {
+ if (fsl_add_bridge(np, 1) < 0)
+ continue;
+ } else {
+ if (fsl_add_bridge(np, 0) < 0)
+ continue;
+ }
hose = pci_find_hose_for_OF_device(np);
+ if (!hose)
+ continue;
max = min(max, hose->dma_window_base_cur +
hose->dma_window_size);
}
diff --git a/arch/powerpc/platforms/85xx/mpc85xx_ds.c
b/arch/powerpc/platforms/85xx/mpc85xx_ds.c
index 2113120..5eba5f0 100644
--- a/arch/powerpc/platforms/85xx/mpc85xx_ds.c
+++ b/arch/powerpc/platforms/85xx/mpc85xx_ds.c
@@ -175,12 +175,17 @@ static void __init mpc85xx_ds_setup_arch(void)
of_device_is_compatible(np, "fsl,p2020-pcie")) {
struct resource rsrc;
of_address_to_resource(np, 0, &rsrc);
- if ((rsrc.start & 0xfffff) == primary_phb_addr)
- fsl_add_bridge(np, 1);
- else
- fsl_add_bridge(np, 0);
+ if ((rsrc.start & 0xfffff) == primary_phb_addr) {
+ if (fsl_add_bridge(np, 1) < 0)
+ continue;
+ } else {
+ if (fsl_add_bridge(np, 0) < 0)
+ continue;
+ }
hose = pci_find_hose_for_OF_device(np);
+ if (!hose)
+ continue;
max = min(max, hose->dma_window_base_cur +
hose->dma_window_size);
}
diff --git a/arch/powerpc/platforms/85xx/mpc85xx_mds.c
b/arch/powerpc/platforms/85xx/mpc85xx_mds.c
index 495cfd9..3a68122 100644
--- a/arch/powerpc/platforms/85xx/mpc85xx_mds.c
+++ b/arch/powerpc/platforms/85xx/mpc85xx_mds.c
@@ -351,12 +351,17 @@ static void __init mpc85xx_mds_setup_arch(void)
of_device_is_compatible(np, "fsl,mpc8548-pcie")) {
struct resource rsrc;
of_address_to_resource(np, 0, &rsrc);
- if ((rsrc.start & 0xfffff) == 0x8000)
- fsl_add_bridge(np, 1);
- else
- fsl_add_bridge(np, 0);
+ if ((rsrc.start & 0xfffff) == 0x8000) {
+ if (fsl_add_bridge(np, 1) < 0)
+ continue;
+ } else {
+ if (fsl_add_bridge(np, 0) < 0)
+ continue;
+ }
hose = pci_find_hose_for_OF_device(np);
+ if (!hose)
+ continue;
max = min(max, hose->dma_window_base_cur +
hose->dma_window_size);
}
diff --git a/arch/powerpc/platforms/85xx/p1022_ds.c
b/arch/powerpc/platforms/85xx/p1022_ds.c
index 2bf4342..614768b 100644
--- a/arch/powerpc/platforms/85xx/p1022_ds.c
+++ b/arch/powerpc/platforms/85xx/p1022_ds.c
@@ -292,12 +292,17 @@ static void __init p1022_ds_setup_arch(void)
of_address_to_resource(np, 0, &rsrc);
- if ((rsrc.start & 0xfffff) == 0x8000)
- fsl_add_bridge(np, 1);
- else
- fsl_add_bridge(np, 0);
+ if ((rsrc.start & 0xfffff) == 0x8000) {
+ if (fsl_add_bridge(np, 1) < 0)
+ continue;
+ } else {
+ if (fsl_add_bridge(np, 0) < 0)
+ continue;
+ }
hose = pci_find_hose_for_OF_device(np);
+ if (!hose)
+ continue;
max = min(max, hose->dma_window_base_cur +
hose->dma_window_size);
}
diff --git a/arch/powerpc/platforms/86xx/mpc86xx_hpcn.c
b/arch/powerpc/platforms/86xx/mpc86xx_hpcn.c
index 569262c..819f29b 100644
--- a/arch/powerpc/platforms/86xx/mpc86xx_hpcn.c
+++ b/arch/powerpc/platforms/86xx/mpc86xx_hpcn.c
@@ -83,11 +83,17 @@ mpc86xx_hpcn_setup_arch(void)
for_each_compatible_node(np, "pci", "fsl,mpc8641-pcie") {
struct resource rsrc;
of_address_to_resource(np, 0, &rsrc);
- if ((rsrc.start & 0xfffff) == 0x8000)
- fsl_add_bridge(np, 1);
- else
- fsl_add_bridge(np, 0);
+ if ((rsrc.start & 0xfffff) == 0x8000) {
+ if (fsl_add_bridge(np, 1) < 0)
+ continue;
+ } else {
+ if (fsl_add_bridge(np, 0) < 0)
+ continue;
+ }
+
hose = pci_find_hose_for_OF_device(np);
+ if (!hose)
+ continue;
max = min(max, hose->dma_window_base_cur +
hose->dma_window_size);
}
--
1.7.5.4
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