修改led为gpio

hc

2024-10-12 a5969cabbb4660eab42b6ef0412cbbd1200cf14d

 kernel/include/linux/tty_ldisc.h
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@@ -54,10 +54,16 @@
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  *	low-level driver can "grab" an ioctl request before the line
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  *	discpline has a chance to see it.
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  *
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- * long	(*compat_ioctl)(struct tty_struct * tty, struct file * file,
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+ * int	(*compat_ioctl)(struct tty_struct * tty, struct file * file,
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  *		        unsigned int cmd, unsigned long arg);
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  *
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  *	Process ioctl calls from 32-bit process on 64-bit system
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+ *
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+ *	NOTE: only ioctls that are neither "pointer to compatible
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+ *	structure" nor tty-generic.  Something private that takes
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+ *	an integer or a pointer to wordsize-sensitive structure
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+ *	belongs here, but most of ldiscs will happily leave
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+ *	it NULL.
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  *
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  * void	(*set_termios)(struct tty_struct *tty, struct ktermios * old);
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  *
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@@ -120,6 +126,7 @@
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 #include <linux/fs.h>
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 #include <linux/wait.h>
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 #include <linux/atomic.h>
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+#include <linux/android_kabi.h>
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 /*
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  * the semaphore definition
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@@ -179,12 +186,13 @@
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 	void	(*close)(struct tty_struct *);
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 	void	(*flush_buffer)(struct tty_struct *tty);
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 	ssize_t	(*read)(struct tty_struct *tty, struct file *file,
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-			unsigned char __user *buf, size_t nr);
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+			unsigned char *buf, size_t nr,
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+			void **cookie, unsigned long offset);
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 	ssize_t	(*write)(struct tty_struct *tty, struct file *file,
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 			 const unsigned char *buf, size_t nr);
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 	int	(*ioctl)(struct tty_struct *tty, struct file *file,
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 			 unsigned int cmd, unsigned long arg);
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-	long	(*compat_ioctl)(struct tty_struct *tty, struct file *file,
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+	int	(*compat_ioctl)(struct tty_struct *tty, struct file *file,
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 				unsigned int cmd, unsigned long arg);
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 	void	(*set_termios)(struct tty_struct *tty, struct ktermios *old);
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 	__poll_t (*poll)(struct tty_struct *, struct file *,
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@@ -204,6 +212,9 @@
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 	struct  module *owner;
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 	int refcount;
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+
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+	ANDROID_KABI_RESERVE(1);
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+	ANDROID_KABI_RESERVE(2);
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 };
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 struct tty_ldisc {