[PATCH 5.4 045/102] watchdog: sprd: Fix the incorrect pointer getting from driver data

Greg Kroah-Hartman
2020-01-24T09:39:07Z

From: Shuiqing Li <shuiqing.li@unisoc.com>

commit 39e68d9e7ab276880980ee5386301fb218202192 upstream.

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@unisoc.com>
Signed-off-by: Shuiqing Li <shuiqing.li@unisoc.com>
Signed-off-by: Baolin Wang <baolin.wang@linaro.org>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/76d4687189ec940baa90cb8d679a8d4c8f02ee80.1573210405.git.baolin.wang@linaro.org
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
drivers/watchdog/sprd_wdt.c | 6 ++----
1 file changed, 2 insertions(+), 4 deletions(-)

--- a/drivers/watchdog/sprd_wdt.c
+++ b/drivers/watchdog/sprd_wdt.c
@@ -327,10 +327,9 @@ static int sprd_wdt_probe(struct platfor

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_su

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_re
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);