mirror of
git://projects.qi-hardware.com/openwrt-xburst.git
synced 2024-12-01 01:16:15 +02:00
1c9cad5dce
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@31602 3c298f89-4303-0410-b956-a3cf2f4a3e73
142 lines
4.4 KiB
Diff
142 lines
4.4 KiB
Diff
From 2b62c9d685d9bb048a006b695683b2a812c0a847 Mon Sep 17 00:00:00 2001
|
|
From: Gabor Juhos <juhosg@openwrt.org>
|
|
Date: Wed, 14 Mar 2012 10:36:09 +0100
|
|
Subject: [PATCH 18/47] MIPS: ath79: allow to use board specific pci_plat_dev_init functions
|
|
|
|
Th current implementation causes NULL pointer dereference
|
|
if 'pci_data' is not set:
|
|
|
|
pci 0000:00:00.0: BAR 0: assigned [mem 0x10000000-0x1000ffff 64bit]
|
|
pci 0000:00:00.0: BAR 0: set to [mem 0x10000000-0x1000ffff 64bit] (PCI
|
|
address [0x10000000-0x1000ffff])
|
|
CPU 0 Unable to handle kernel paging request at virtual address 00000000, epc == 802daca0, ra == 802e78a4
|
|
Oops[#1]:
|
|
Cpu 0
|
|
$ 0 : 00000000 80420000 00000000 00000000
|
|
$ 4 : 00000000 00000000 00000001 00000001
|
|
$ 8 : 00000001 0000032c 81c54700 00000001
|
|
$12 : 0000032d 0000000f 00000000 ffffffff
|
|
$16 : 81c14c00 00000001 802dac74 80195f98
|
|
$20 : 802ea050 00000000 00000000 00000000
|
|
$24 : 00000003 800617f0
|
|
$28 : 81c20000 81c21e70 00000000 802e78a4
|
|
Hi : 00000000
|
|
Lo : 4190ab00
|
|
epc : 802daca0 0x802daca0
|
|
Not tainted
|
|
ra : 802e78a4 0x802e78a4
|
|
Status: 1000c003 KERNEL EXL IE
|
|
Cause : 00800008
|
|
BadVA : 00000000
|
|
PrId : 00019374 (MIPS 24Kc)
|
|
Modules linked in:
|
|
Process swapper (pid: 1, threadinfo=81c20000, task=81c18000, tls=00000000)
|
|
Stack : 00000000 8027d5d8 802e8ae0 00000000 01000000 802e8b5c 81c50600 00000000
|
|
802ff290 00000000 80420000 802ea0bc 00000000 00000000 80420000 802ff290
|
|
80420000 80060930 33390000 00000000 00002308 80140a80 00000028 802d0000
|
|
00000000 800ba024 802ff004 802ff0c8 802ff290 00000000 00000000 00000000
|
|
00000000 802d897c 01234567 7f827068 00000000 0045f798 00460000 00000000
|
|
|
|
This can be avoided by calling the 'ar724x_pci_add_data'
|
|
function from the board specific setup code. However it
|
|
makes no sense to use that function for every board,
|
|
especially when the board does not needs to set the
|
|
platform_data field of any PCI device.
|
|
|
|
The patch allows the board setup code to specify a board
|
|
specific function if that is required.
|
|
|
|
Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
|
|
Cc: linux-mips@linux-mips.org
|
|
Patchwork: https://patchwork.linux-mips.org/patch/3499/
|
|
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
|
|
---
|
|
arch/mips/ath79/mach-ubnt-xm.c | 13 ++++++++++++-
|
|
arch/mips/ath79/pci.c | 14 ++++++++------
|
|
arch/mips/ath79/pci.h | 4 +++-
|
|
3 files changed, 23 insertions(+), 8 deletions(-)
|
|
|
|
--- a/arch/mips/ath79/mach-ubnt-xm.c
|
|
+++ b/arch/mips/ath79/mach-ubnt-xm.c
|
|
@@ -85,16 +85,27 @@ static struct ath9k_platform_data ubnt_x
|
|
static struct ar724x_pci_data ubnt_xm_pci_data[] = {
|
|
{
|
|
.irq = ATH79_PCI_IRQ(0),
|
|
- .pdata = &ubnt_xm_eeprom_data,
|
|
},
|
|
};
|
|
|
|
+static int ubnt_xm_pci_plat_dev_init(struct pci_dev *dev)
|
|
+{
|
|
+ switch (PCI_SLOT(dev->devfn)) {
|
|
+ case 0:
|
|
+ dev->dev.platform_data = &ubnt_xm_eeprom_data;
|
|
+ break;
|
|
+ }
|
|
+
|
|
+ return 0;
|
|
+}
|
|
+
|
|
static void __init ubnt_xm_pci_init(void)
|
|
{
|
|
memcpy(ubnt_xm_eeprom_data.eeprom_data, UBNT_XM_EEPROM_ADDR,
|
|
sizeof(ubnt_xm_eeprom_data.eeprom_data));
|
|
|
|
ar724x_pci_add_data(ubnt_xm_pci_data, ARRAY_SIZE(ubnt_xm_pci_data));
|
|
+ ath79_pci_set_plat_dev_init(ubnt_xm_pci_plat_dev_init);
|
|
ath79_register_pci();
|
|
}
|
|
#else
|
|
--- a/arch/mips/ath79/pci.c
|
|
+++ b/arch/mips/ath79/pci.c
|
|
@@ -14,6 +14,7 @@
|
|
#include <asm/mach-ath79/pci.h>
|
|
#include "pci.h"
|
|
|
|
+static int (*ath79_pci_plat_dev_init)(struct pci_dev *dev);
|
|
static struct ar724x_pci_data *pci_data;
|
|
static int pci_data_size;
|
|
|
|
@@ -38,14 +39,15 @@ int __init pcibios_map_irq(const struct
|
|
|
|
int pcibios_plat_dev_init(struct pci_dev *dev)
|
|
{
|
|
- unsigned int devfn = dev->devfn;
|
|
-
|
|
- if (devfn > pci_data_size - 1)
|
|
- return PCIBIOS_DEVICE_NOT_FOUND;
|
|
+ if (ath79_pci_plat_dev_init)
|
|
+ return ath79_pci_plat_dev_init(dev);
|
|
|
|
- dev->dev.platform_data = pci_data[devfn].pdata;
|
|
+ return 0;
|
|
+}
|
|
|
|
- return PCIBIOS_SUCCESSFUL;
|
|
+void __init ath79_pci_set_plat_dev_init(int (*func)(struct pci_dev *dev))
|
|
+{
|
|
+ ath79_pci_plat_dev_init = func;
|
|
}
|
|
|
|
int __init ath79_register_pci(void)
|
|
--- a/arch/mips/ath79/pci.h
|
|
+++ b/arch/mips/ath79/pci.h
|
|
@@ -13,14 +13,16 @@
|
|
|
|
struct ar724x_pci_data {
|
|
int irq;
|
|
- void *pdata;
|
|
};
|
|
|
|
void ar724x_pci_add_data(struct ar724x_pci_data *data, int size);
|
|
|
|
#ifdef CONFIG_PCI
|
|
+void ath79_pci_set_plat_dev_init(int (*func)(struct pci_dev *dev));
|
|
int ath79_register_pci(void);
|
|
#else
|
|
+static inline void
|
|
+ath79_pci_set_plat_dev_init(int (*func)(struct pci_dev *)) {}
|
|
static inline int ath79_register_pci(void) { return 0; }
|
|
#endif
|
|
|