Merge remote-tracking branch 'lorenzo/pci/endpoint' into next

* lorenzo/pci/endpoint:
  PCI: endpoint: Use EPC's device in dma_alloc_coherent()/dma_free_coherent()
  PCI: designware-ep: Fix ->get_msi() to check MSI_EN bit
  PCI: endpoint: Fix find_first_zero_bit() usage
  PCI: endpoint: Populate func_no before calling pci_epc_add_epf()
  PCI: designware-ep: Fix find_first_zero_bit() usage

3 files changed, 12 insertions, 21 deletions

diff --git a/drivers/pci/endpoint/pci-ep-cfs.c b/drivers/pci/endpoint/pci-ep-cfs.c
index 48a89dff0e7fa..9ec28be1e3783 100644
--- a/drivers/pci/endpoint/pci-ep-cfs.c
+++ b/drivers/pci/endpoint/pci-ep-cfs.c
@@ -101,22 +101,23 @@ static int pci_epc_epf_link(struct config_item *epc_item,
 {
 	int ret;
 	u32 func_no = 0;
-	struct pci_epc *epc;
-	struct pci_epf *epf;
 	struct pci_epf_group *epf_group = to_pci_epf_group(epf_item);
 	struct pci_epc_group *epc_group = to_pci_epc_group(epc_item);
-
-	epc = epc_group->epc;
-	epf = epf_group->epf;
-	ret = pci_epc_add_epf(epc, epf);
-	if (ret)
-		goto err_add_epf;
+	struct pci_epc *epc = epc_group->epc;
+	struct pci_epf *epf = epf_group->epf;
 
 	func_no = find_first_zero_bit(&epc_group->function_num_map,
-				      sizeof(epc_group->function_num_map));
+				      BITS_PER_LONG);
+	if (func_no >= BITS_PER_LONG)
+		return -EINVAL;
+
 	set_bit(func_no, &epc_group->function_num_map);
 	epf->func_no = func_no;
 
+	ret = pci_epc_add_epf(epc, epf);
+	if (ret)
+		goto err_add_epf;
+
 	ret = pci_epf_bind(epf);
 	if (ret)
 		goto err_epf_bind;
diff --git a/drivers/pci/endpoint/pci-epc-core.c b/drivers/pci/endpoint/pci-epc-core.c
index e8908e0792ad8..5bb1852b8e1c5 100644
--- a/drivers/pci/endpoint/pci-epc-core.c
+++ b/drivers/pci/endpoint/pci-epc-core.c
@@ -18,7 +18,6 @@
  */
 
 #include <linux/device.h>
-#include <linux/dma-mapping.h>
 #include <linux/slab.h>
 #include <linux/module.h>
 #include <linux/of_device.h>
@@ -381,7 +380,6 @@ EXPORT_SYMBOL_GPL(pci_epc_write_header);
 int pci_epc_add_epf(struct pci_epc *epc, struct pci_epf *epf)
 {
 	unsigned long flags;
-	struct device *dev = epc->dev.parent;
 
 	if (epf->epc)
 		return -EBUSY;
@@ -393,12 +391,6 @@ int pci_epc_add_epf(struct pci_epc *epc, struct pci_epf *epf)
 		return -EINVAL;
 
 	epf->epc = epc;
-	if (dev->of_node) {
-		of_dma_configure(&epf->dev, dev->of_node);
-	} else {
-		dma_set_coherent_mask(&epf->dev, epc->dev.coherent_dma_mask);
-		epf->dev.dma_mask = epc->dev.dma_mask;
-	}
 
 	spin_lock_irqsave(&epc->lock, flags);
 	list_add_tail(&epf->list, &epc->pci_epf);
@@ -513,9 +505,7 @@ __pci_epc_create(struct device *dev, const struct pci_epc_ops *ops,
 	INIT_LIST_HEAD(&epc->pci_epf);
 
 	device_initialize(&epc->dev);
-	dma_set_coherent_mask(&epc->dev, dev->coherent_dma_mask);
 	epc->dev.class = pci_epc_class;
-	epc->dev.dma_mask = dev->dma_mask;
 	epc->dev.parent = dev;
 	epc->ops = ops;
 
diff --git a/drivers/pci/endpoint/pci-epf-core.c b/drivers/pci/endpoint/pci-epf-core.c
index ae1611a62808f..95ccc4b8a0a2a 100644
--- a/drivers/pci/endpoint/pci-epf-core.c
+++ b/drivers/pci/endpoint/pci-epf-core.c
@@ -99,7 +99,7 @@ EXPORT_SYMBOL_GPL(pci_epf_bind);
  */
 void pci_epf_free_space(struct pci_epf *epf, void *addr, enum pci_barno bar)
 {
-	struct device *dev = &epf->dev;
+	struct device *dev = epf->epc->dev.parent;
 
 	if (!addr)
 		return;
@@ -122,7 +122,7 @@ EXPORT_SYMBOL_GPL(pci_epf_free_space);
 void *pci_epf_alloc_space(struct pci_epf *epf, size_t size, enum pci_barno bar)
 {
 	void *space;
-	struct device *dev = &epf->dev;
+	struct device *dev = epf->epc->dev.parent;
 	dma_addr_t phys_addr;
 
 	if (size < 128)