From: Xinghui Li <korantli@xxxxxxxxxxx>
[ Upstream commit 0c0206dc4f5ba2d18b15e24d2047487d6f73916b ]
The ret variable in the vmd_enable_domain() function was used
uninitialized when printing a warning message upon failure of
the pci_reset_bus() function.
Thus, fix the issue by assigning ret with the value returned from
pci_reset_bus() before referencing it in the warning message.
This was detected by Smatch:
drivers/pci/controller/vmd.c:931 vmd_enable_domain() error: uninitialized symbol 'ret'.
[kwilczynski: drop the second patch from the series, add missing reported
by tag, commit log]
Fixes: 0a584655ef89 ("PCI: vmd: Fix secondary bus reset for Intel bridges")
Link: https://lore.kernel.org/all/202305270219.B96IiIfv-lkp@xxxxxxxxx
Link: https://lore.kernel.org/linux-pci/20230420094332.1507900-2-korantwork@xxxxxxxxx
Reported-by: kernel test robot <lkp@xxxxxxxxx>
Reported-by: Dan Carpenter <error27@xxxxxxxxx>
Signed-off-by: Xinghui Li <korantli@xxxxxxxxxxx>
Signed-off-by: Krzysztof Wilczyński <kwilczynski@xxxxxxxxxx>
Reviewed-by: Nirmal Patel <nirmal.patel@xxxxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/pci/controller/vmd.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/pci/controller/vmd.c b/drivers/pci/controller/vmd.c
index 30ec18283aaf4..e718a816d4814 100644
--- a/drivers/pci/controller/vmd.c
+++ b/drivers/pci/controller/vmd.c
@@ -927,7 +927,8 @@ static int vmd_enable_domain(struct vmd_dev *vmd, unsigned long features)
if (!list_empty(&child->devices)) {
dev = list_first_entry(&child->devices,
struct pci_dev, bus_list);
- if (pci_reset_bus(dev))
+ ret = pci_reset_bus(dev);
+ if (ret)
pci_warn(dev, "can't reset device: %d\n", ret);
break;
--
2.39.2
