watchdog: Orion: Fix possible null-deference in orion_wdt_probe
If the DT does not include a regs parameter then the null res
would be dereferenced.
Signed-off-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.com>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
diff --git a/drivers/watchdog/orion_wdt.c b/drivers/watchdog/orion_wdt.c
index 0478b00..7c18b3b 100644
--- a/drivers/watchdog/orion_wdt.c
+++ b/drivers/watchdog/orion_wdt.c
@@ -156,6 +156,8 @@
wdt_tclk = clk_get_rate(clk);
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (!res)
+ return -ENODEV;
wdt_reg = devm_ioremap(&pdev->dev, res->start, resource_size(res));
if (!wdt_reg)
return -ENOMEM;
