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Groups > linux.kernel > #1298060

[PATCH v2 4/5] watchdog: mena21: Do not use device pointer from struct watchdog_device

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The device pointer in struct watchdog_device has a different lifetime
than the driver code and should not be used in drivers. Use the pointer
to the parent device instead.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
---
v2: Print messages using parent device

 drivers/watchdog/mena21_wdt.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/watchdog/mena21_wdt.c b/drivers/watchdog/mena21_wdt.c
index 098fa9c34d6d..af6a7c489f08 100644
--- a/drivers/watchdog/mena21_wdt.c
+++ b/drivers/watchdog/mena21_wdt.c
@@ -100,12 +100,12 @@ static int a21_wdt_set_timeout(struct watchdog_device *wdt,
 	struct a21_wdt_drv *drv = watchdog_get_drvdata(wdt);
 
 	if (timeout != 1 && timeout != 30) {
-		dev_err(wdt->dev, "Only 1 and 30 allowed as timeout\n");
+		dev_err(wdt->parent, "Only 1 and 30 allowed as timeout\n");
 		return -EINVAL;
 	}
 
 	if (timeout == 30 && wdt->timeout == 1) {
-		dev_err(wdt->dev,
+		dev_err(wdt->parent,
 			"Transition from fast to slow mode not allowed\n");
 		return -EINVAL;
 	}
-- 
2.1.4

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Thread

[PATCH v2 0/5] watchdog: Do not use 'dev' from watchdog_device in watchdog drivers Guenter Roeck <linux@roeck-us.net> - 2015-12-24 23:30 +0100
  [PATCH v2 5/5] watchdog: qcom-wdt: Do not set 'dev' in struct watchdog_device Guenter Roeck <linux@roeck-us.net> - 2015-12-24 23:30 +0100
  [PATCH v2 3/5] watchdog: gpio: Do not use device pointer from struct watchdog_device Guenter Roeck <linux@roeck-us.net> - 2015-12-24 23:30 +0100
  [PATCH v2 4/5] watchdog: mena21: Do not use device pointer from struct watchdog_device Guenter Roeck <linux@roeck-us.net> - 2015-12-24 23:30 +0100
  [PATCH v2 1/5] watchdog: bcm2835_wdt: Drop log message if watchdog is stopped Guenter Roeck <linux@roeck-us.net> - 2015-12-24 23:30 +0100
  [PATCH v2 2/5] watchdog: tangox: Print info message using pointer to platform device Guenter Roeck <linux@roeck-us.net> - 2015-12-24 23:30 +0100
  Re: [PATCH v2 0/5] watchdog: Do not use 'dev' from watchdog_device in watchdog drivers Wim Van Sebroeck <wim@iguana.be> - 2015-12-28 23:20 +0100
    Re: [PATCH v2 0/5] watchdog: Do not use 'dev' from watchdog_device  in watchdog drivers Guenter Roeck <linux@roeck-us.net> - 2015-12-29 01:10 +0100

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