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sparc64: Fix OOPS in psycho_pcierr_intr_other(). 

We no longer put the top-level PCI controller device into the
PCI layer device list.  So pbm->pci_bus->self is always NULL.

Therefore, use direct PCI config space accesses to get at
the PCI controller's PCI_STATUS register.

Tested by Meelis Roos.

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller 2008-09-16 09:53:42 -07:00
parent 6bfb09a100
commit f948cc6ab9
1 changed files with 5 additions and 3 deletions
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8
arch/sparc64/kernel/pci_psycho.c
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@ -575,7 +575,7 @@ static irqreturn_t psycho_pcierr_intr_other(struct pci_pbm_info *pbm, int is_pbm
{
unsigned long csr_reg, csr, csr_error_bits;
irqreturn_t ret = IRQ_NONE;
u16 stat;
u16 stat, *addr;
if (is_pbm_a) {
csr_reg = pbm->controller_regs + PSYCHO_PCIA_CTRL;
@ -597,7 +597,9 @@ static irqreturn_t psycho_pcierr_intr_other(struct pci_pbm_info *pbm, int is_pbm
printk("%s: PCI SERR signal asserted.\n", pbm->name);
ret = IRQ_HANDLED;
}
pci_read_config_word(pbm->pci_bus->self, PCI_STATUS, &stat);
addr = psycho_pci_config_mkaddr(pbm, pbm->pci_first_busno,
0, PCI_STATUS);
pci_config_read16(addr, &stat);
if (stat & (PCI_STATUS_PARITY |
PCI_STATUS_SIG_TARGET_ABORT |
PCI_STATUS_REC_TARGET_ABORT |
@ -605,7 +607,7 @@ static irqreturn_t psycho_pcierr_intr_other(struct pci_pbm_info *pbm, int is_pbm
PCI_STATUS_SIG_SYSTEM_ERROR)) {
printk("%s: PCI bus error, PCI_STATUS[%04x]\n",
pbm->name, stat);
pci_write_config_word(pbm->pci_bus->self, PCI_STATUS, 0xffff);
pci_config_write16(addr, 0xffff);
ret = IRQ_HANDLED;
}
return ret;