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watchdogtest: replace msm_trigger_wdog_bite()

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use kallsyms_lookup_name("msm_trigger_wdog_bite") to get
"msm_trigger_wdog_bite" address instead of exporting from
kernel and no need port to kernel every platform

Change-Id: I314d552f480baed0fa418afcf7a80134c69867de
Reviewed-on: https://gerrit.mot.com/1534039
SME-Granted: SME Approvals Granted
SLTApproved: Slta Waiver
Tested-by: Jira Key
Reviewed-by: Ryan Lattrel <[email protected]>
Reviewed-by: Huosheng Liao <[email protected]>
Reviewed-by: Ling Jin <[email protected]>
Submit-Approved: Jira Key
This commit is contained in:
jixj 2020-04-14 16:38:27 +08:00 • committed by Xiaojun Ji
commit b554de9724
1 changed files with 14 additions and 9 deletions
Download patch file Download diff file Expand all files Collapse all files

23
drivers/watchdogtest/watchdogtest.c
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@ -15,12 +15,14 @@
#include <linux/preempt.h>
#include <linux/module.h>
#include <linux/debugfs.h>
#include <linux/kallsyms.h>
#include <soc/qcom/watchdog.h>
static struct dentry *dbgfs_fire_softlockup;
static struct dentry *dbgfs_fire_watchdog;
#ifndef CONFIG_QCOM_WATCHDOG_V2
static void (*trigger_wdog_bite)(void);
struct completion wdt_timeout_complete;
static void wdt_timeout_work(struct work_struct *work)
{
@ -31,20 +33,19 @@ static void wdt_timeout_work(struct work_struct *work)
complete(&wdt_timeout_complete);
}
static DECLARE_WORK(wdt_timeout_work_struct, wdt_timeout_work);
#endif
static int fire_watchdog_reset_set(void *data, u64 val)
{
printk(KERN_WARNING "Fire hardware watchdog reset.\n");
printk(KERN_WARNING "Please wait ...\n");
#ifdef CONFIG_QCOM_WATCHDOG_V2
msm_trigger_wdog_bite();
#else
init_completion(&wdt_timeout_complete);
schedule_work_on(0, &wdt_timeout_work_struct);
wait_for_completion(&wdt_timeout_complete);
#endif
if (trigger_wdog_bite) {
trigger_wdog_bite();
} else {
init_completion(&wdt_timeout_complete);
schedule_work_on(0, &wdt_timeout_work_struct);
wait_for_completion(&wdt_timeout_complete);
}
return 0;
}
DEFINE_SIMPLE_ATTRIBUTE(fire_watchdog_reset_fops,
@ -69,6 +70,10 @@ static int watchdog_test_init(void)
0200, NULL, NULL, &fire_softlockup_reset_fops);
dbgfs_fire_watchdog = debugfs_create_file("fire_watchdog_reset",
0200, NULL, NULL, &fire_watchdog_reset_fops);
trigger_wdog_bite = (void *)kallsyms_lookup_name("msm_trigger_wdog_bite");
if (!trigger_wdog_bite)
printk(KERN_ERR "Failed to get msm_trigger_wdog_bite address\n");
return 0;
}