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[PATCH] v850: Round up length passed to slram driver to a multiple of SLRAM_BLK_SZ

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Signed-off-by: Miles Bader <miles@gnu.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Miles Bader 2005-09-02 15:13:30 +09:00 committed by Linus Torvalds
parent 213b24c93b
commit 023239c6c9
1 changed files with 12 additions and 2 deletions
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14
arch/v850/kernel/setup.c
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@ -1,8 +1,8 @@
/* /*
* arch/v850/kernel/setup.c -- Arch-dependent initialization functions * arch/v850/kernel/setup.c -- Arch-dependent initialization functions
* *
* Copyright (C) 2001,02,03 NEC Electronics Corporation * Copyright (C) 2001,02,03,05 NEC Electronics Corporation
* Copyright (C) 2001,02,03 Miles Bader <miles@gnu.org> * Copyright (C) 2001,02,03,05 Miles Bader <miles@gnu.org>
* *
* This file is subject to the terms and conditions of the GNU General * This file is subject to the terms and conditions of the GNU General
* Public License. See the file COPYING in the main directory of this * Public License. See the file COPYING in the main directory of this
@ -98,10 +98,20 @@ void __init trap_init (void)
} }
#ifdef CONFIG_MTD #ifdef CONFIG_MTD
/* From drivers/mtd/devices/slram.c */
#define SLRAM_BLK_SZ 0x4000
/* Set the root filesystem to be the given memory region. /* Set the root filesystem to be the given memory region.
Some parameter may be appended to CMD_LINE. */ Some parameter may be appended to CMD_LINE. */
void set_mem_root (void *addr, size_t len, char *cmd_line) void set_mem_root (void *addr, size_t len, char *cmd_line)
{ {
/* Some sort of idiocy in MTD means we must supply a length that's
a multiple of SLRAM_BLK_SZ. We just round up the real length,
as the file system shouldn't attempt to access anything beyond
the end of the image anyway. */
len = (((len - 1) + SLRAM_BLK_SZ) / SLRAM_BLK_SZ) * SLRAM_BLK_SZ;
/* The only way to pass info to the MTD slram driver is via /* The only way to pass info to the MTD slram driver is via
the command line. */ the command line. */
if (*cmd_line) { if (*cmd_line) {