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9dc775aabb
We should only access console_devices[file][i] once we have checked that i
< cd_count[file]. Otherwise, we will access uninitialized memory at the end
of the loop. console_devices[file][i] should not be NULL, but putting the
assignment in the loop condition allows us to ensure that i is checked
beforehand. This isn't a bug, but it does make valgrind stop complaining.
Fixes: 400797cad3 ("IOMUX: Split out for_each_console_dev() helper macro")
Signed-off-by: Sean Anderson <seanga2@gmail.com>
Reviewed-by: Andrew Scull <ascull@google.com>
Acked-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
37 lines
950 B
C
37 lines
950 B
C
/* SPDX-License-Identifier: GPL-2.0+ */
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/*
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* (C) Copyright 2008
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* Gary Jennejohn, DENX Software Engineering GmbH, garyj@denx.de.
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*/
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#ifndef _IO_MUX_H
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#define _IO_MUX_H
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#include <stdio_dev.h>
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/*
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* Stuff required to support console multiplexing.
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*/
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/*
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* Pointers to devices used for each file type. Defined in console.c
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* but storage is allocated in iomux.c.
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*/
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extern struct stdio_dev **console_devices[MAX_FILES];
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/*
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* The count of devices assigned to each FILE. Defined in console.c
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* and populated in iomux.c.
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*/
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extern int cd_count[MAX_FILES];
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#define for_each_console_dev(i, file, dev) \
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for (i = 0; \
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i < cd_count[file] && (dev = console_devices[file][i]); \
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i++)
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int iomux_match_device(struct stdio_dev **, const int, struct stdio_dev *);
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int iomux_doenv(const int, const char *);
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int iomux_replace_device(const int, const char *, const char *);
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void iomux_printdevs(const int);
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#endif /* _IO_MUX_H */
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