[MTD] CORE mtdchar.c: fix off-by-one error in lseek()
Allow lseek(mtdchar_fd, 0, SEEK_END) to succeed, which currently fails with EINVAL. lseek(fd, 0, SEEK_END) should result into the same fileposition as lseek(fd, 0, SEEK_SET) + read(fd, buf, length(fd)) Furthermore, lseek(fd, 0, SEEK_CUR) should return the current file position, which in case of an encountered EOF should not result in EINVAL Signed-off-by: Herbert Valerio Riedel <hvr@gnu.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: David Woodhouse <dwmw2@infradead.org>
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@ -78,7 +78,7 @@ static loff_t mtd_lseek (struct file *file, loff_t offset, int orig)
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return -EINVAL;
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}
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if (offset >= 0 && offset < mtd->size)
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if (offset >= 0 && offset <= mtd->size)
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return file->f_pos = offset;
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return -EINVAL;
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