On Tue, Mar 10, 2015 at 10:25 AM, Murali Karicheri<m-karicheri2@xxxxxx> wrote:The current patch series does have a empty function if OF is disabled.
On some platforms such as that based on x86, ia64 etc, root bus is
created with parent node passed in as NULL to pci_create_root_bus().
On these platforms, the patch series "PCI: get DMA configuration from
parent device" when applied causes kernel crash. So add a check for this
Wouldn't these arches have OF disabled and call an empty function?
Regardless, we still need this.These archs have OF enabled, but they call pci_create_root_bus() with NULL parent node passed in. That is why the crash happens.
Signed-off-by: Murali Karicheri<m-karicheri2@xxxxxx>
I'm assuming Bjorn will apply this.
Acked-by: Rob Herring<robh@xxxxxxxxxx>
drivers/of/of_pci.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/of/of_pci.c b/drivers/of/of_pci.c
index 86d3c38..a8e485c 100644
@@ -129,6 +129,10 @@ void of_pci_dma_configure(struct pci_dev *pci_dev)
struct device *dev =&pci_dev->dev;
struct device *bridge = pci_get_host_bridge_device(pci_dev);
+ /* Some platforms can have bridge->parent set to NULL */
+ if (!bridge->parent)
To unsubscribe from this list: send the line "unsubscribe linux-pci" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html