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-rw-r--r--drivers/watchdog/armada_37xx_wdt.c2
-rw-r--r--drivers/watchdog/at91sam9_wdt.c7
-rw-r--r--drivers/watchdog/bcm2835_wdt.c3
-rw-r--r--drivers/watchdog/diag288_wdt.c15
-rw-r--r--drivers/watchdog/hpwdt.c2
-rw-r--r--drivers/watchdog/iTCO_wdt.c26
-rw-r--r--drivers/watchdog/intel-mid_wdt.c1
-rw-r--r--drivers/watchdog/menz69_wdt.c16
-rw-r--r--drivers/watchdog/pcwd_usb.c6
-rw-r--r--drivers/watchdog/sbsa_gwdt.c1
-rw-r--r--drivers/watchdog/sp5100_tco.c4
-rw-r--r--drivers/watchdog/stm32_iwdg.c3
-rw-r--r--drivers/watchdog/ts4800_wdt.c5
-rw-r--r--drivers/watchdog/watchdog_dev.c5
-rw-r--r--drivers/watchdog/wdat_wdt.c1
15 files changed, 67 insertions, 30 deletions
diff --git a/drivers/watchdog/armada_37xx_wdt.c b/drivers/watchdog/armada_37xx_wdt.c
index e5dcb26d85f0..dcb3ffda3fad 100644
--- a/drivers/watchdog/armada_37xx_wdt.c
+++ b/drivers/watchdog/armada_37xx_wdt.c
@@ -274,6 +274,8 @@ static int armada_37xx_wdt_probe(struct platform_device *pdev)
if (!res)
return -ENODEV;
dev->reg = devm_ioremap(&pdev->dev, res->start, resource_size(res));
+ if (!dev->reg)
+ return -ENOMEM;
/* init clock */
dev->clk = devm_clk_get(&pdev->dev, NULL);
diff --git a/drivers/watchdog/at91sam9_wdt.c b/drivers/watchdog/at91sam9_wdt.c
index 292b5a1ca831..fed7be246442 100644
--- a/drivers/watchdog/at91sam9_wdt.c
+++ b/drivers/watchdog/at91sam9_wdt.c
@@ -206,10 +206,9 @@ static int at91_wdt_init(struct platform_device *pdev, struct at91wdt *wdt)
"min heartbeat and max heartbeat might be too close for the system to handle it correctly\n");
if ((tmp & AT91_WDT_WDFIEN) && wdt->irq) {
- err = request_irq(wdt->irq, wdt_interrupt,
- IRQF_SHARED | IRQF_IRQPOLL |
- IRQF_NO_SUSPEND,
- pdev->name, wdt);
+ err = devm_request_irq(dev, wdt->irq, wdt_interrupt,
+ IRQF_SHARED | IRQF_IRQPOLL | IRQF_NO_SUSPEND,
+ pdev->name, wdt);
if (err)
return err;
}
diff --git a/drivers/watchdog/bcm2835_wdt.c b/drivers/watchdog/bcm2835_wdt.c
index dec6ca019bea..3a8dec05b591 100644
--- a/drivers/watchdog/bcm2835_wdt.c
+++ b/drivers/watchdog/bcm2835_wdt.c
@@ -42,6 +42,7 @@
#define SECS_TO_WDOG_TICKS(x) ((x) << 16)
#define WDOG_TICKS_TO_SECS(x) ((x) >> 16)
+#define WDOG_TICKS_TO_MSECS(x) ((x) * 1000 >> 16)
struct bcm2835_wdt {
void __iomem *base;
@@ -140,7 +141,7 @@ static struct watchdog_device bcm2835_wdt_wdd = {
.info = &bcm2835_wdt_info,
.ops = &bcm2835_wdt_ops,
.min_timeout = 1,
- .max_timeout = WDOG_TICKS_TO_SECS(PM_WDOG_TIME_SET),
+ .max_hw_heartbeat_ms = WDOG_TICKS_TO_MSECS(PM_WDOG_TIME_SET),
.timeout = WDOG_TICKS_TO_SECS(PM_WDOG_TIME_SET),
};
diff --git a/drivers/watchdog/diag288_wdt.c b/drivers/watchdog/diag288_wdt.c
index aafc8d98bf9f..370f648cb4b1 100644
--- a/drivers/watchdog/diag288_wdt.c
+++ b/drivers/watchdog/diag288_wdt.c
@@ -86,7 +86,7 @@ static int __diag288(unsigned int func, unsigned int timeout,
"1:\n"
EX_TABLE(0b, 1b)
: "+d" (err) : "d"(__func), "d"(__timeout),
- "d"(__action), "d"(__len) : "1", "cc");
+ "d"(__action), "d"(__len) : "1", "cc", "memory");
return err;
}
@@ -272,12 +272,21 @@ static int __init diag288_init(void)
char ebc_begin[] = {
194, 197, 199, 201, 213
};
+ char *ebc_cmd;
watchdog_set_nowayout(&wdt_dev, nowayout_info);
if (MACHINE_IS_VM) {
- if (__diag288_vm(WDT_FUNC_INIT, 15,
- ebc_begin, sizeof(ebc_begin)) != 0) {
+ ebc_cmd = kmalloc(sizeof(ebc_begin), GFP_KERNEL);
+ if (!ebc_cmd) {
+ pr_err("The watchdog cannot be initialized\n");
+ return -ENOMEM;
+ }
+ memcpy(ebc_cmd, ebc_begin, sizeof(ebc_begin));
+ ret = __diag288_vm(WDT_FUNC_INIT, 15,
+ ebc_cmd, sizeof(ebc_begin));
+ kfree(ebc_cmd);
+ if (ret != 0) {
pr_err("The watchdog cannot be initialized\n");
return -EINVAL;
}
diff --git a/drivers/watchdog/hpwdt.c b/drivers/watchdog/hpwdt.c
index 7d34bcf1c45b..53573c3ddd1a 100644
--- a/drivers/watchdog/hpwdt.c
+++ b/drivers/watchdog/hpwdt.c
@@ -174,7 +174,7 @@ static int hpwdt_pretimeout(unsigned int ulReason, struct pt_regs *regs)
"3. OA Forward Progress Log\n"
"4. iLO Event Log";
- if (ilo5 && ulReason == NMI_UNKNOWN && !mynmi)
+ if (ulReason == NMI_UNKNOWN && !mynmi)
return NMI_DONE;
if (ilo5 && !pretimeout && !mynmi)
diff --git a/drivers/watchdog/iTCO_wdt.c b/drivers/watchdog/iTCO_wdt.c
index e707c4797f76..134237d8b8fc 100644
--- a/drivers/watchdog/iTCO_wdt.c
+++ b/drivers/watchdog/iTCO_wdt.c
@@ -413,6 +413,20 @@ static unsigned int iTCO_wdt_get_timeleft(struct watchdog_device *wd_dev)
return time_left;
}
+/* Returns true if the watchdog was running */
+static bool iTCO_wdt_set_running(struct iTCO_wdt_private *p)
+{
+ u16 val;
+
+ /* Bit 11: TCO Timer Halt -> 0 = The TCO timer is enabled */
+ val = inw(TCO1_CNT(p));
+ if (!(val & BIT(11))) {
+ set_bit(WDOG_HW_RUNNING, &p->wddev.status);
+ return true;
+ }
+ return false;
+}
+
/*
* Kernel Interfaces
*/
@@ -501,9 +515,6 @@ static int iTCO_wdt_probe(struct platform_device *pdev)
return -ENODEV; /* Cannot reset NO_REBOOT bit */
}
- /* Set the NO_REBOOT bit to prevent later reboots, just for sure */
- p->update_no_reboot_bit(p->no_reboot_priv, true);
-
if (turn_SMI_watchdog_clear_off >= p->iTCO_version) {
/*
* Bit 13: TCO_EN -> 0
@@ -555,8 +566,13 @@ static int iTCO_wdt_probe(struct platform_device *pdev)
watchdog_set_drvdata(&p->wddev, p);
platform_set_drvdata(pdev, p);
- /* Make sure the watchdog is not running */
- iTCO_wdt_stop(&p->wddev);
+ if (!iTCO_wdt_set_running(p)) {
+ /*
+ * If the watchdog was not running set NO_REBOOT now to
+ * prevent later reboots.
+ */
+ p->update_no_reboot_bit(p->no_reboot_priv, true);
+ }
/* Check that the heartbeat value is within it's range;
if not reset to the default */
diff --git a/drivers/watchdog/intel-mid_wdt.c b/drivers/watchdog/intel-mid_wdt.c
index 2cdbd37c700c..7ee355c28628 100644
--- a/drivers/watchdog/intel-mid_wdt.c
+++ b/drivers/watchdog/intel-mid_wdt.c
@@ -181,3 +181,4 @@ module_platform_driver(mid_wdt_driver);
MODULE_AUTHOR("David Cohen <david.a.cohen@linux.intel.com>");
MODULE_DESCRIPTION("Watchdog Driver for Intel MID platform");
MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:intel_mid_wdt");
diff --git a/drivers/watchdog/menz69_wdt.c b/drivers/watchdog/menz69_wdt.c
index ed18238c5407..96a25d18ab64 100644
--- a/drivers/watchdog/menz69_wdt.c
+++ b/drivers/watchdog/menz69_wdt.c
@@ -98,14 +98,6 @@ static const struct watchdog_ops men_z069_ops = {
.set_timeout = men_z069_wdt_set_timeout,
};
-static struct watchdog_device men_z069_wdt = {
- .info = &men_z069_info,
- .ops = &men_z069_ops,
- .timeout = MEN_Z069_DEFAULT_TIMEOUT,
- .min_timeout = 1,
- .max_timeout = MEN_Z069_WDT_COUNTER_MAX / MEN_Z069_TIMER_FREQ,
-};
-
static int men_z069_probe(struct mcb_device *dev,
const struct mcb_device_id *id)
{
@@ -125,15 +117,19 @@ static int men_z069_probe(struct mcb_device *dev,
goto release_mem;
drv->mem = mem;
+ drv->wdt.info = &men_z069_info;
+ drv->wdt.ops = &men_z069_ops;
+ drv->wdt.timeout = MEN_Z069_DEFAULT_TIMEOUT;
+ drv->wdt.min_timeout = 1;
+ drv->wdt.max_timeout = MEN_Z069_WDT_COUNTER_MAX / MEN_Z069_TIMER_FREQ;
- drv->wdt = men_z069_wdt;
watchdog_init_timeout(&drv->wdt, 0, &dev->dev);
watchdog_set_nowayout(&drv->wdt, nowayout);
watchdog_set_drvdata(&drv->wdt, drv);
drv->wdt.parent = &dev->dev;
mcb_set_drvdata(dev, drv);
- return watchdog_register_device(&men_z069_wdt);
+ return watchdog_register_device(&drv->wdt);
release_mem:
mcb_release_mem(mem);
diff --git a/drivers/watchdog/pcwd_usb.c b/drivers/watchdog/pcwd_usb.c
index 6727f8ab2d18..ce94b6f35488 100644
--- a/drivers/watchdog/pcwd_usb.c
+++ b/drivers/watchdog/pcwd_usb.c
@@ -325,7 +325,8 @@ static int usb_pcwd_set_heartbeat(struct usb_pcwd_private *usb_pcwd, int t)
static int usb_pcwd_get_temperature(struct usb_pcwd_private *usb_pcwd,
int *temperature)
{
- unsigned char msb, lsb;
+ unsigned char msb = 0x00;
+ unsigned char lsb = 0x00;
usb_pcwd_send_command(usb_pcwd, CMD_READ_TEMP, &msb, &lsb);
@@ -341,7 +342,8 @@ static int usb_pcwd_get_temperature(struct usb_pcwd_private *usb_pcwd,
static int usb_pcwd_get_timeleft(struct usb_pcwd_private *usb_pcwd,
int *time_left)
{
- unsigned char msb, lsb;
+ unsigned char msb = 0x00;
+ unsigned char lsb = 0x00;
/* Read the time that's left before rebooting */
/* Note: if the board is not yet armed then we will read 0xFFFF */
diff --git a/drivers/watchdog/sbsa_gwdt.c b/drivers/watchdog/sbsa_gwdt.c
index f0f1e3b2e463..4cbe6ba52754 100644
--- a/drivers/watchdog/sbsa_gwdt.c
+++ b/drivers/watchdog/sbsa_gwdt.c
@@ -121,6 +121,7 @@ static int sbsa_gwdt_set_timeout(struct watchdog_device *wdd,
struct sbsa_gwdt *gwdt = watchdog_get_drvdata(wdd);
wdd->timeout = timeout;
+ timeout = clamp_t(unsigned int, timeout, 1, wdd->max_hw_heartbeat_ms / 1000);
if (action)
writel(gwdt->clk * timeout,
diff --git a/drivers/watchdog/sp5100_tco.c b/drivers/watchdog/sp5100_tco.c
index 93bd302ae7c5..704d7c527fcb 100644
--- a/drivers/watchdog/sp5100_tco.c
+++ b/drivers/watchdog/sp5100_tco.c
@@ -98,6 +98,10 @@ static int tco_timer_start(struct watchdog_device *wdd)
val |= SP5100_WDT_START_STOP_BIT;
writel(val, SP5100_WDT_CONTROL(tco->tcobase));
+ /* This must be a distinct write. */
+ val |= SP5100_WDT_TRIGGER_BIT;
+ writel(val, SP5100_WDT_CONTROL(tco->tcobase));
+
return 0;
}
diff --git a/drivers/watchdog/stm32_iwdg.c b/drivers/watchdog/stm32_iwdg.c
index 25188d6bbe15..16dd1aab7c67 100644
--- a/drivers/watchdog/stm32_iwdg.c
+++ b/drivers/watchdog/stm32_iwdg.c
@@ -21,6 +21,8 @@
#include <linux/platform_device.h>
#include <linux/watchdog.h>
+#define DEFAULT_TIMEOUT 10
+
/* IWDG registers */
#define IWDG_KR 0x00 /* Key register */
#define IWDG_PR 0x04 /* Prescaler Register */
@@ -254,6 +256,7 @@ static int stm32_iwdg_probe(struct platform_device *pdev)
wdd->parent = dev;
wdd->info = &stm32_iwdg_info;
wdd->ops = &stm32_iwdg_ops;
+ wdd->timeout = DEFAULT_TIMEOUT;
wdd->min_timeout = DIV_ROUND_UP((RLR_MIN + 1) * PR_MIN, wdt->rate);
wdd->max_hw_heartbeat_ms = ((RLR_MAX + 1) * wdt->data->max_prescaler *
1000) / wdt->rate;
diff --git a/drivers/watchdog/ts4800_wdt.c b/drivers/watchdog/ts4800_wdt.c
index c137ad2bd5c3..0ea554c7cda5 100644
--- a/drivers/watchdog/ts4800_wdt.c
+++ b/drivers/watchdog/ts4800_wdt.c
@@ -125,13 +125,16 @@ static int ts4800_wdt_probe(struct platform_device *pdev)
ret = of_property_read_u32_index(np, "syscon", 1, &reg);
if (ret < 0) {
dev_err(dev, "no offset in syscon\n");
+ of_node_put(syscon_np);
return ret;
}
/* allocate memory for watchdog struct */
wdt = devm_kzalloc(dev, sizeof(*wdt), GFP_KERNEL);
- if (!wdt)
+ if (!wdt) {
+ of_node_put(syscon_np);
return -ENOMEM;
+ }
/* set regmap and offset to know where to write */
wdt->feed_offset = reg;
diff --git a/drivers/watchdog/watchdog_dev.c b/drivers/watchdog/watchdog_dev.c
index 8494846ccdc5..6fb860542c86 100644
--- a/drivers/watchdog/watchdog_dev.c
+++ b/drivers/watchdog/watchdog_dev.c
@@ -1007,6 +1007,7 @@ static int watchdog_cdev_register(struct watchdog_device *wdd)
/* Fill in the data structures */
cdev_init(&wd_data->cdev, &watchdog_fops);
+ wd_data->cdev.owner = wdd->ops->owner;
/* Add the device */
err = cdev_device_add(&wd_data->cdev, &wd_data->dev);
@@ -1016,13 +1017,11 @@ static int watchdog_cdev_register(struct watchdog_device *wdd)
if (wdd->id == 0) {
misc_deregister(&watchdog_miscdev);
old_wd_data = NULL;
- put_device(&wd_data->dev);
}
+ put_device(&wd_data->dev);
return err;
}
- wd_data->cdev.owner = wdd->ops->owner;
-
/* Record time of most recent heartbeat as 'just before now'. */
wd_data->last_hw_keepalive = ktime_sub(ktime_get(), 1);
watchdog_set_open_deadline(wd_data);
diff --git a/drivers/watchdog/wdat_wdt.c b/drivers/watchdog/wdat_wdt.c
index 88c5e6361aa0..fddbb39433be 100644
--- a/drivers/watchdog/wdat_wdt.c
+++ b/drivers/watchdog/wdat_wdt.c
@@ -462,6 +462,7 @@ static int wdat_wdt_probe(struct platform_device *pdev)
return ret;
watchdog_set_nowayout(&wdat->wdd, nowayout);
+ watchdog_stop_on_reboot(&wdat->wdd);
return devm_watchdog_register_device(dev, &wdat->wdd);
}
generated by cgit 1.2.3-korg (git 2.39.0) at 2024-05-16 04:41:53 +0000