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Commit ad1cd720 authored by Tomas Winkler's avatar Tomas Winkler Committed by Greg Kroah-Hartman
Browse files

watchdog: mei_wdt: add activation debugfs entry 



Add entry for displaying whether the device has activated or
deactivated watchdog fw application.

cat <debugfs>/mei_wdt/activation
activated | deactivated

Reviewed-by: default avatarGuenter Roeck <linux@roeck-us.net>
Signed-off-by: default avatarTomas Winkler <tomas.winkler@intel.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 7a23f80e

drivers/watchdog/mei_wdt.c

+27 −0
Original line number Diff line number Diff line
@@ -497,6 +497,28 @@ static void mei_wdt_event(struct mei_cl_device *cldev, 


#if IS_ENABLED(CONFIG_DEBUG_FS)



static ssize_t mei_dbgfs_read_activation(struct file *file, char __user *ubuf,

					size_t cnt, loff_t *ppos)

{

	struct mei_wdt *wdt = file->private_data;

	const size_t bufsz = 32;

	char buf[32];

	ssize_t pos;



	mutex_lock(&wdt->reg_lock);

	pos = scnprintf(buf, bufsz, "%s\n",

		__mei_wdt_is_registered(wdt) ? "activated" : "deactivated");

	mutex_unlock(&wdt->reg_lock);



	return simple_read_from_buffer(ubuf, cnt, ppos, buf, pos);

}



static const struct file_operations dbgfs_fops_activation = {

	.open    = simple_open,

	.read    = mei_dbgfs_read_activation,

	.llseek  = generic_file_llseek,

};



static ssize_t mei_dbgfs_read_state(struct file *file, char __user *ubuf,

				    size_t cnt, loff_t *ppos)

{
@@ -536,6 +558,11 @@ static int dbgfs_register(struct mei_wdt *wdt) 
	if (!f)

		goto err;



	f = debugfs_create_file("activation",  S_IRUSR,

				dir, wdt, &dbgfs_fops_activation);

	if (!f)

		goto err;



	return 0;

err:

	dbgfs_unregister(wdt);