| Message ID | 201605301304.u4UD4OxM016853@mx0a-001b2d01.pphosted.com (mailing list archive) |
|---|---|
| State | Not Applicable |
| Headers | show |
diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c index c8b4dbd..a259394 100644 --- a/drivers/pci/pci.c +++ b/drivers/pci/pci.c @@ -4761,6 +4761,12 @@ static resource_size_t pci_specified_resource_alignment(struct pci_dev *dev) spin_lock(&resource_alignment_lock); p = resource_alignment_param; while (*p) { + if (pci_has_flag(PCI_PROBE_ONLY)) { + printk(KERN_ERR "PCI: Ignore resource_alignment parameter: %s with PCI_PROBE_ONLY set\n", + p); + *p = 0; + break; + } count = 0; if (sscanf(p, "%d%n", &align_order, &count) == 1 && p[count] == '@') {
The resource_alignment will releases memory resources allocated by firmware so that kernel can reassign new resources later on. But this will cause the problem that no resources can be allocated by kernel if PCI_PROBE_ONLY was set, e.g. on pSeries platform because PCI_PROBE_ONLY force kernel to use firmware setup and not to reassign any resources. To solve this problem, this patch ignores resource_alignment if PCI_PROBE_ONLY was set. Signed-off-by: Yongji Xie <xyjxie@linux.vnet.ibm.com> --- drivers/pci/pci.c | 6 ++++++ 1 file changed, 6 insertions(+)