[PATCH] watchdog: sprd: Fix the incorrect pointer getting from driver data

From: Baolin Wang
Date: Fri Nov 08 2019 - 05:58:20 EST


From: Shuiqing Li <shuiqing.li@xxxxxxxxxx>

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>
---
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 0bb17b0..65cb55f 100644
--- a/drivers/watchdog/sprd_wdt.c
+++ b/drivers/watchdog/sprd_wdt.c
@@ -327,10 +327,9 @@ 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);

@@ -339,7 +338,6 @@ 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;

@@ -347,7 +345,7 @@ 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);
--
1.7.9.5