diff mbox

[v2,04/10] PCI: Add dev parameter to __of_pci_get_host_bridge_resources()

Message ID cfab525f3d0436f75187fbd65907ada909d7692f.1525067324.git.jan.kiszka@siemens.com (mailing list archive)
State New, archived
Headers show

Commit Message

Jan Kiszka April 30, 2018, 5:48 a.m. UTC 
From: Jan Kiszka <jan.kiszka@siemens.com>

When non-NULL, use the new dev parameter of
__of_pci_get_host_bridge_resources() to allocate the resource data
structures via devm_kzalloc. That allows to release them automatically
during device destruction.

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
---
 drivers/pci/of.c | 15 +++++++++++----
 1 file changed, 11 insertions(+), 4 deletions(-)

Comments

Vladimir Zapolskiy May 3, 2018, 7:14 a.m. UTC | #1 
On 04/30/2018 08:48 AM, Jan Kiszka wrote:
> From: Jan Kiszka <jan.kiszka@siemens.com>
> 
> When non-NULL, use the new dev parameter of
> __of_pci_get_host_bridge_resources() to allocate the resource data
> structures via devm_kzalloc. That allows to release them automatically
> during device destruction.
> 
> Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>

Reviewed-by: Vladimir Zapolskiy <vladimir_zapolskiy@mentor.com>
Tested-by: Vladimir Zapolskiy <vladimir_zapolskiy@mentor.com>

--
With best wishes,
Vladimir
diff mbox

Patch

diff --git a/drivers/pci/of.c b/drivers/pci/of.c
index 375de447a58e..bfa282b538d5 100644
--- a/drivers/pci/of.c
+++ b/drivers/pci/of.c
@@ -243,7 +243,7 @@  void of_pci_check_probe_only(void)
 EXPORT_SYMBOL_GPL(of_pci_check_probe_only);
 
 #if defined(CONFIG_OF_ADDRESS)
-static int __of_pci_get_host_bridge_resources(
+static int __of_pci_get_host_bridge_resources(struct device *dev,
 			struct device_node *dev_node,
 			unsigned char busno, unsigned char bus_max,
 			struct list_head *resources, resource_size_t *io_base)
@@ -259,7 +259,10 @@  static int __of_pci_get_host_bridge_resources(
 	if (io_base)
 		*io_base = (resource_size_t)OF_BAD_ADDR;
 
-	bus_range = kzalloc(sizeof(*bus_range), GFP_KERNEL);
+	if (dev)
+		bus_range = devm_kzalloc(dev,sizeof(*bus_range), GFP_KERNEL);
+	else
+		bus_range = kzalloc(sizeof(*bus_range), GFP_KERNEL);
 	if (!bus_range)
 		return -ENOMEM;
 
@@ -303,7 +306,11 @@  static int __of_pci_get_host_bridge_resources(
 		if (range.cpu_addr == OF_BAD_ADDR || range.size == 0)
 			continue;
 
-		res = kzalloc(sizeof(struct resource), GFP_KERNEL);
+		if (dev)
+			res = devm_kzalloc(dev, sizeof(struct resource),
+					   GFP_KERNEL);
+		else
+			res = kzalloc(sizeof(struct resource), GFP_KERNEL);
 		if (!res) {
 			err = -ENOMEM;
 			goto parse_failed;
@@ -365,7 +372,7 @@  int of_pci_get_host_bridge_resources(struct device_node *dev_node,
 			unsigned char busno, unsigned char bus_max,
 			struct list_head *resources, resource_size_t *io_base)
 {
-	return __of_pci_get_host_bridge_resources(dev_node, busno,
+	return __of_pci_get_host_bridge_resources(NULL, dev_node, busno,
 						  bus_max, resources, io_base);
 }
 EXPORT_SYMBOL_GPL(of_pci_get_host_bridge_resources);