Hi Arnd,
在 2016/9/22 17:39, Arnd Bergmann 写道:
The newly added pcie-rockchip driver fails to initialize the
io_size variable if the DT doesn't provide ranges for the PCI
I/O space, as found by building it with -Wmaybe-uninitialized:
drivers/pci/host/pcie-rockchip.c: In function 'rockchip_pcie_probe':
drivers/pci/host/pcie-rockchip.c:1007:6: warning: 'io_size' may be used
uninitialized in this function [-Wmaybe-uninitialized]
Seems like we miss this when refactoring the code a bit.
Thanks for fixing it.
Acked-by: Shawn Lin <[email protected]>
This adds an appropriate initialization immediately in front of
the loop, so the io_size is zero as expected afterwards for that
case.
Fixes: abe17181b16f ("PCI: rockchip: Add Rockchip PCIe controller support")
Signed-off-by: Arnd Bergmann <[email protected]>
---
drivers/pci/host/pcie-rockchip.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/pci/host/pcie-rockchip.c b/drivers/pci/host/pcie-rockchip.c
index c3593e633ccd..8bedc1e1ef80 100644
--- a/drivers/pci/host/pcie-rockchip.c
+++ b/drivers/pci/host/pcie-rockchip.c
@@ -1078,6 +1078,7 @@ static int rockchip_pcie_probe(struct platform_device
*pdev)
goto err_vpcie;
/* Get the I/O and memory ranges from DT */
+ io_size = 0;
resource_list_for_each_entry(win, &res) {
switch (resource_type(win->res)) {
case IORESOURCE_IO:
--
Best Regards
Shawn Lin
