diff mbox series

[v6,25/30] PNP: Don't reserve BARs for PCI when enabled movable BARs

Message ID 20191024171228.877974-26-s.miroshnichenko@yadro.com (mailing list archive)
State Not Applicable
Headers show
Series PCI: Allow BAR movement during hotplug | expand

Checks

Context Check Description
snowpatch_ozlabs/apply_patch success Successfully applied on branch powerpc/merge (6b450d0404ca83dc131dadffd40c5aa6f7a603af)
snowpatch_ozlabs/checkpatch fail Test checkpatch on branch powerpc/merge

Commit Message

Sergei Miroshnichenko Oct. 24, 2019, 5:12 p.m. UTC 
When the Movable BARs feature is supported, the PCI subsystem is able to
distribute existing BARs and allocate the new ones itself, without need to
reserve gaps by BIOS.

CC: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Sergey Miroshnichenko <s.miroshnichenko@yadro.com>
---
 drivers/pnp/system.c | 4 ++++
 1 file changed, 4 insertions(+)
diff mbox series

Patch

diff --git a/drivers/pnp/system.c b/drivers/pnp/system.c
index 6950503741eb..5977bd11f4d4 100644
--- a/drivers/pnp/system.c
+++ b/drivers/pnp/system.c
@@ -12,6 +12,7 @@ 
 #include <linux/device.h>
 #include <linux/init.h>
 #include <linux/slab.h>
+#include <linux/pci.h>
 #include <linux/kernel.h>
 #include <linux/ioport.h>
 
@@ -58,6 +59,9 @@  static void reserve_resources_of_dev(struct pnp_dev *dev)
 	struct resource *res;
 	int i;
 
+	if (pci_can_move_bars)
+		return;
+
 	for (i = 0; (res = pnp_get_resource(dev, IORESOURCE_IO, i)); i++) {
 		if (res->flags & IORESOURCE_DISABLED)
 			continue;