From: Junchang Wang <junchangwang@gmail.com>
Date: Fri, 18 Jun 2010 02:02:33 +0000 (+0800)
Subject: PCI: check return value of pci_enable_device() when enabling bridges
X-Git-Tag: firefly_0821_release~9833^2~1253^2~21
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=2eb5ebd3665a38a4526b45cb3a31a132b2aa9927;p=firefly-linux-kernel-4.4.55.git

PCI: check return value of pci_enable_device() when enabling bridges

pci_enable_device can fail. In that case, a printed warning would be
more appropriate.

Signed-off-by: Justin P. Mattock <justinmattock@gmail.com>
Signed-off-by: Junchang Wang <junchangwang@gmail.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
---

diff --git a/drivers/pci/bus.c b/drivers/pci/bus.c
index 42eea5fbc13b..7f0af0e9b826 100644
--- a/drivers/pci/bus.c
+++ b/drivers/pci/bus.c
@@ -240,6 +240,8 @@ void pci_enable_bridges(struct pci_bus *bus)
 		if (dev->subordinate) {
 			if (!pci_is_enabled(dev)) {
 				retval = pci_enable_device(dev);
+				if (retval)
+					dev_err(&dev->dev, "Error enabling bridge (%d), continuing\n", retval);
 				pci_set_master(dev);
 			}
 			pci_enable_bridges(dev->subordinate);