xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

powerpc/eeh: Use eeh_unfreeze_pe()

Browse Source 
The patch uses eeh_unfreeze_pe() to replace the logic clearing
frozen IO and DMA, in order to simplify the code.

Signed-off-by: Gavin Shan <gwshan@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Gavin Shan
2014-09-30 12:39:02 +10:00
committed by Michael Ellerman
parent 4eeeff0ebc
commit c9dd014397
3 changed files with 8 additions and 50 deletions
Download Patch File Download Diff File Expand all files Collapse all files

18
arch/powerpc/kernel/eeh_driver.c
View File

@@ -450,21 +450,15 @@ static void *eeh_pe_detach_dev(void *data, void *userdata)
static void *__eeh_clear_pe_frozen_state(void *data, void *flag)
{
struct eeh_pe *pe = (struct eeh_pe *)data;
int i, rc;
int i, rc = 1;
for (i = 0; i < 3; i++) {
rc = eeh_pci_enable(pe, EEH_OPT_THAW_MMIO);
if (rc)
continue;
rc = eeh_pci_enable(pe, EEH_OPT_THAW_DMA);
if (!rc)
break;
}
for (i = 0; rc && i < 3; i++)
rc = eeh_unfreeze_pe(pe, false);
/* The PE has been isolated, clear it */
/* Stop immediately on any errors */
if (rc) {
pr_warn("%s: Can't clear frozen PHB#%x-PE#%x (%d)\n",
__func__, pe->phb->global_number, pe->addr, rc);
pr_warn("%s: Failure %d unfreezing PHB#%x-PE#%x\n",
__func__, rc, pe->phb->global_number, pe->addr);
return (void *)pe;
}