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f28169d200
I noticed that errors happening while hotplugging devices from the host were never returned back to the mconsole client. In some cases, success was returned instead of even an information-free error. This patch cleans that up by having the low-level configuration code pass back an error string along with an error code. At the top level, which knows whether it is early boot time or responding to an mconsole request, the string is printk'd or returned to the mconsole client. There are also whitespace and trivial code cleanups in the surrounding code. Signed-off-by: Jeff Dike <jdike@addtoit.com> Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
54 lines
1.7 KiB
C
54 lines
1.7 KiB
C
/*
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* Copyright (C) 2000, 2001 Jeff Dike (jdike@karaya.com)
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* Licensed under the GPL
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*/
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#ifndef __CHAN_KERN_H__
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#define __CHAN_KERN_H__
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#include "linux/tty.h"
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#include "linux/list.h"
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#include "linux/console.h"
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#include "chan_user.h"
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#include "line.h"
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struct chan {
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struct list_head list;
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struct list_head free_list;
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struct line *line;
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char *dev;
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unsigned int primary:1;
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unsigned int input:1;
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unsigned int output:1;
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unsigned int opened:1;
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unsigned int enabled:1;
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int fd;
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const struct chan_ops *ops;
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void *data;
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};
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extern void chan_interrupt(struct list_head *chans, struct delayed_work *task,
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struct tty_struct *tty, int irq);
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extern int parse_chan_pair(char *str, struct line *line, int device,
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const struct chan_opts *opts, char **error_out);
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extern int open_chan(struct list_head *chans);
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extern int write_chan(struct list_head *chans, const char *buf, int len,
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int write_irq);
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extern int console_write_chan(struct list_head *chans, const char *buf,
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int len);
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extern int console_open_chan(struct line *line, struct console *co,
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const struct chan_opts *opts);
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extern void deactivate_chan(struct list_head *chans, int irq);
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extern void reactivate_chan(struct list_head *chans, int irq);
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extern void chan_enable_winch(struct list_head *chans, struct tty_struct *tty);
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extern void enable_chan(struct line *line);
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extern void close_chan(struct list_head *chans, int delay_free_irq);
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extern int chan_window_size(struct list_head *chans,
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unsigned short *rows_out,
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unsigned short *cols_out);
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extern int chan_out_fd(struct list_head *chans);
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extern int chan_config_string(struct list_head *chans, char *str, int size,
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char **error_out);
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#endif
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