diff options
Diffstat (limited to 'packages/linux/linux-2.6.18/mtd-unlock-nor-flash-automatically-where-necessary.patch')
| -rw-r--r-- | packages/linux/linux-2.6.18/mtd-unlock-nor-flash-automatically-where-necessary.patch | 75 |
1 files changed, 0 insertions, 75 deletions
diff --git a/packages/linux/linux-2.6.18/mtd-unlock-nor-flash-automatically-where-necessary.patch b/packages/linux/linux-2.6.18/mtd-unlock-nor-flash-automatically-where-necessary.patch deleted file mode 100644 index 1cb1f8e6d3..0000000000 --- a/packages/linux/linux-2.6.18/mtd-unlock-nor-flash-automatically-where-necessary.patch +++ /dev/null @@ -1,75 +0,0 @@ -From 187ef15268e638603dea55a91fdfa29feaed6d13 Mon Sep 17 00:00:00 2001 -From: =?utf-8?q?H=C3=A5vard_Skinnemoen?= <hskinnemoen@atmel.com> -Date: Fri, 22 Sep 2006 10:07:08 +0100 -Subject: [PATCH] [MTD] Unlock NOR flash automatically where necessary -Content-Type: text/plain; charset=UTF-8 -Content-Transfer-Encoding: 8bit - -Introduce the MTD_STUPID_LOCK flag which indicates that the flash chip is -always locked after power-up, so all sectors need to be unlocked before it -is usable. - -If this flag is set, and the chip provides an unlock() operation, -mtd_add_device will unlock the whole MTD device if it's writeable. This -means that non-writeable partitions will stay locked. - -Set MTD_STUPID_LOCK in fixup_use_atmel_lock() so that these chips will work -as expected. - -Signed-off-by: Håvard Skinnemoen <hskinnemoen@atmel.com> -Signed-off-by: Andrew Morton <akpm@osdl.org> -Signed-off-by: David Woodhouse <dwmw2@infradead.org> ---- - drivers/mtd/chips/cfi_cmdset_0002.c | 1 + - drivers/mtd/mtdcore.c | 10 ++++++++++ - include/mtd/mtd-abi.h | 1 + - 3 files changed, 12 insertions(+), 0 deletions(-) - -diff --git a/drivers/mtd/chips/cfi_cmdset_0002.c b/drivers/mtd/chips/cfi_cmdset_0002.c -index a482e89..702ae4c 100644 ---- a/drivers/mtd/chips/cfi_cmdset_0002.c -+++ b/drivers/mtd/chips/cfi_cmdset_0002.c -@@ -212,6 +212,7 @@ static void fixup_use_atmel_lock(struct mtd_info *mtd, void *param) - { - mtd->lock = cfi_atmel_lock; - mtd->unlock = cfi_atmel_unlock; -+ mtd->flags |= MTD_STUPID_LOCK; - } - - static struct cfi_fixup cfi_fixup_table[] = { -diff --git a/drivers/mtd/mtdcore.c b/drivers/mtd/mtdcore.c -index 168d3ba..c4d26de 100644 ---- a/drivers/mtd/mtdcore.c -+++ b/drivers/mtd/mtdcore.c -@@ -57,6 +57,16 @@ int add_mtd_device(struct mtd_info *mtd) - mtd->index = i; - mtd->usecount = 0; - -+ /* Some chips always power up locked. Unlock them now */ -+ if ((mtd->flags & MTD_WRITEABLE) -+ && (mtd->flags & MTD_STUPID_LOCK) && mtd->unlock) { -+ if (mtd->unlock(mtd, 0, mtd->size)) -+ printk(KERN_WARNING -+ "%s: unlock failed, " -+ "writes may not work\n", -+ mtd->name); -+ } -+ - DEBUG(0, "mtd: Giving out device %d to %s\n",i, mtd->name); - /* No need to get a refcount on the module containing - the notifier, since we hold the mtd_table_mutex */ -diff --git a/include/mtd/mtd-abi.h b/include/mtd/mtd-abi.h -index 1da3f7f..b0a67b7 100644 ---- a/include/mtd/mtd-abi.h -+++ b/include/mtd/mtd-abi.h -@@ -34,6 +34,7 @@ struct mtd_oob_buf { - #define MTD_WRITEABLE 0x400 /* Device is writeable */ - #define MTD_BIT_WRITEABLE 0x800 /* Single bits can be flipped */ - #define MTD_NO_ERASE 0x1000 /* No erase necessary */ -+#define MTD_STUPID_LOCK 0x2000 /* Always locked after reset */ - - // Some common devices / combinations of capabilities - #define MTD_CAP_ROM 0 --- -1.4.4.1 - |