修改4g拨号为QMI,需要在系统里后台执行quectel-CM

hc

2024-10-22 8ac6c7a54ed1b98d142dce24b11c6de6a1e239a5

 kernel/lib/notifier-error-inject.c
..
..
@@ -1,3 +1,4 @@
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+// SPDX-License-Identifier: GPL-2.0-only
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 #include <linux/module.h>
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 #include "notifier-error-inject.h"
..
..
@@ -14,7 +15,7 @@
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 	return 0;
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 }
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-DEFINE_SIMPLE_ATTRIBUTE(fops_errno, debugfs_errno_get, debugfs_errno_set,
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+DEFINE_SIMPLE_ATTRIBUTE_SIGNED(fops_errno, debugfs_errno_get, debugfs_errno_set,
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 			"%lld\n");
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 static struct dentry *debugfs_create_errno(const char *name, umode_t mode,
..
..
@@ -58,33 +59,22 @@
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 	err_inject->nb.priority = priority;
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 	dir = debugfs_create_dir(name, parent);
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-	if (!dir)
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-		return ERR_PTR(-ENOMEM);
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 	actions_dir = debugfs_create_dir("actions", dir);
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-	if (!actions_dir)
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-		goto fail;
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 	for (action = err_inject->actions; action->name; action++) {
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 		struct dentry *action_dir;
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 		action_dir = debugfs_create_dir(action->name, actions_dir);
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-		if (!action_dir)
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-			goto fail;
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 		/*
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 		 * Create debugfs r/w file containing action->error. If
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 		 * notifier call chain is called with action->val, it will
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 		 * fail with the error code
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 		 */
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-		if (!debugfs_create_errno("error", mode, action_dir,
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-					&action->error))
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-			goto fail;
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+		debugfs_create_errno("error", mode, action_dir, &action->error);
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 	}
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 	return dir;
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-fail:
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-	debugfs_remove_recursive(dir);
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-	return ERR_PTR(-ENOMEM);
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 }
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 EXPORT_SYMBOL_GPL(notifier_err_inject_init);
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