[PATCH AUTOSEL 4.19 651/671] watchdog: sprd: Fix the incorrect pointer getting from driver data

[Sasha Levin]

From: Shuiqing Li <shuiqing.li@xxxxxxxxxx>

[ Upstream commit 39e68d9e7ab276880980ee5386301fb218202192 ]

The device driver data saved the 'struct sprd_wdt' object, it is
incorrect to get 'struct watchdog_device' object from the driver
data, thus fix it.

Fixes: 477603467009 ("watchdog: Add Spreadtrum watchdog driver")
Reported-by: Dongwei Wang <dongwei.wang@xxxxxxxxxx>
Signed-off-by: Shuiqing Li <shuiqing.li@xxxxxxxxxx>
Signed-off-by: Baolin Wang <baolin.wang@xxxxxxxxxx>
Reviewed-by: Guenter Roeck <linux@xxxxxxxxxxxx>
Link: https://lore.kernel.org/r/76d4687189ec940baa90cb8d679a8d4c8f02ee80.1573210405.git.baolin.wang@xxxxxxxxxx
Signed-off-by: Guenter Roeck <linux@xxxxxxxxxxxx>
Signed-off-by: Wim Van Sebroeck <wim@xxxxxxxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 drivers/watchdog/sprd_wdt.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/watchdog/sprd_wdt.c b/drivers/watchdog/sprd_wdt.c
index ff9397d9638a..b6c65afd3677 100644
--- a/drivers/watchdog/sprd_wdt.c
+++ b/drivers/watchdog/sprd_wdt.c
@@ -342,10 +342,9 @@ static int sprd_wdt_probe(struct platform_device *pdev)
 
 static int __maybe_unused sprd_wdt_pm_suspend(struct device *dev)
 {
-	struct watchdog_device *wdd = dev_get_drvdata(dev);
 	struct sprd_wdt *wdt = dev_get_drvdata(dev);
 
-	if (watchdog_active(wdd))
+	if (watchdog_active(&wdt->wdd))
 		sprd_wdt_stop(&wdt->wdd);
 	sprd_wdt_disable(wdt);
 
@@ -354,7 +353,6 @@ static int __maybe_unused sprd_wdt_pm_suspend(struct device *dev)
 
 static int __maybe_unused sprd_wdt_pm_resume(struct device *dev)
 {
-	struct watchdog_device *wdd = dev_get_drvdata(dev);
 	struct sprd_wdt *wdt = dev_get_drvdata(dev);
 	int ret;
 
@@ -362,7 +360,7 @@ static int __maybe_unused sprd_wdt_pm_resume(struct device *dev)
 	if (ret)
 		return ret;
 
-	if (watchdog_active(wdd)) {
+	if (watchdog_active(&wdt->wdd)) {
 		ret = sprd_wdt_start(&wdt->wdd);
 		if (ret) {
 			sprd_wdt_disable(wdt);
-- 
2.20.1