When pcifront_rescan_root() or pcifront_scan_root() fails, need return
error code, neither set XenbusStateConnected state, just like the other
areas have done.
For pcifront_rescan_root(), it will return error code ("num_roots = 0;",
skip xenbus_switch_state return value).
For pcifront_scan_root(), it will return 0 ("num_roots = 0;", set 0 by
the return value of xenbus_switch_state, which always return 0, at
present).
Signed-off-by: Chen Gang <gang.chen.5i5j@xxxxxxxxx>
---
drivers/pci/xen-pcifront.c | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/drivers/pci/xen-pcifront.c b/drivers/pci/xen-pcifront.c
index 53df39a..d78d884 100644
--- a/drivers/pci/xen-pcifront.c
+++ b/drivers/pci/xen-pcifront.c
@@ -866,6 +866,11 @@ static int pcifront_try_connect(struct pcifront_device *pdev)
xenbus_dev_error(pdev->xdev, err,
"No PCI Roots found, trying 0000:00");
err = pcifront_scan_root(pdev, 0, 0);
+ if (err) {
+ xenbus_dev_fatal(pdev->xdev, err,
+ "Error scanning PCI root 0000:00");
+ goto out;
+ }
num_roots = 0;
} else if (err != 1) {
if (err == 0)
@@ -947,6 +952,11 @@ static int pcifront_attach_devices(struct pcifront_device *pdev)
xenbus_dev_error(pdev->xdev, err,
"No PCI Roots found, trying 0000:00");
err = pcifront_rescan_root(pdev, 0, 0);
+ if (err) {
+ xenbus_dev_fatal(pdev->xdev, err,
+ "Error scanning PCI root 0000:00");
+ goto out;
+ }
num_roots = 0;
} else if (err != 1) {
if (err == 0)
--
1.9.3
--
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
