kernel.git/drivers/mtd/devices/mtdram.c, branch linux-4.9.y

mtd: mtdram: Add parameter for setting writebuf size

2016-03-07T21:06:27Z

ubifs uses the write buffer size in recovery algorithm. When inspecting an unclean ubifs recovery fails with writebuf size 64 in mtdram while recovery on actual mtd device with writebuf size of 1024 succeeds. So add a parameter for setting this property. Signed-off-by: Alexander Stein Reviewed-by: Richard Weinberger Signed-off-by: Brian Norris

mtd: mtdram: check offs and len in mtdram->erase

2015-10-20T01:08:33Z

We should prevent user to erasing mtd device with an unaligned offset or length. Signed-off-by: Dongsheng Yang Signed-off-by: Brian Norris

Revert "mtd: mtdram: check offs and len in mtdram->erase"

2015-09-30T00:29:17Z

This reverts commit 7827e3acad2df1c6537e5fe7211d216dabc60399. There are some 64-bit arithmetic issues on some architectures, so let's wait until we get a better patch for this. Signed-off-by: Brian Norris

mtd: mtdram: check offs and len in mtdram->erase

2015-09-29T22:43:15Z

We should prevent user to erasing mtd device with an unaligned offset or length. Signed-off-by: Dongsheng Yang Signed-off-by: Brian Norris

mtd: mtdram: add missing 'const'

2014-01-20T19:55:23Z

mtdram_init_device() wasn't updated along with mtd_partition.name. Signed-off-by: Brian Norris Cc: Geert Uytterhoeven

mtd: harmonize mtd_point interface implementation

2012-03-26T23:32:11Z

Some MTD drivers return -EINVAL if the 'phys' parameter is not NULL, trying to convey that they cannot return the physical address. However, this is not very logical because they still can return the virtual address ('virt'). But some drivers (lpddr) just ignore the 'phys' parameter instead, which is a more logical thing to do. Let's harmonize this and: 1. Always initialize 'virt' and 'phys' to 'NULL' in 'mtd_point()'. 2. Do not return an error if the physical address cannot be found. So as a result, all drivers will set 'phys' to 'NULL' if it is not supported. None of the 'mtd_point()' users use 'phys' anyway, so this should not break anything. I guess we could also just delete this parameter later. Signed-off-by: Artem Bityutskiy Signed-off-by: David Woodhouse

mtd: do not duplicate length and offset checks in drivers

2012-03-26T23:28:18Z

We already verify that offset and length are within the MTD device size in the MTD API functions. Let's remove the duplicated checks in drivers. This patch only affects the following API's: 'mtd_erase()' 'mtd_point()' 'mtd_unpoint()' 'mtd_get_unmapped_area()' 'mtd_read()' 'mtd_write()' 'mtd_panic_write()' 'mtd_lock()' 'mtd_unlock()' 'mtd_is_locked()' 'mtd_block_isbad()' 'mtd_block_markbad()' This patch adds a bit of noise by removing too sparse empty lines, but this is not too bad. Signed-off-by: Artem Bityutskiy Signed-off-by: David Woodhouse

mtd: return error code from mtd_unpoint

2012-03-26T23:27:19Z

The 'mtd_unpoint()' API function should be able to return an error code because it may fail if you specify incorrect offset. This patch changes this MTD API function and amends all the drivers correspondingly. Also return '-EOPNOTSUPP' from 'mtd_unpoint()' when the '->unpoint()' method is undefined. We do not really need this currently, but this just makes sense to be consistent with 'mtd_point()'. Signed-off-by: Artem Bityutskiy Signed-off-by: David Woodhouse

mtd: add leading underscore to all mtd functions

2012-03-26T23:20:01Z

This patch renames all MTD functions by adding a "_" prefix: mtd->erase -> mtd->_erase mtd->read_oob -> mtd->_read_oob ... The reason is that we are re-working the MTD API and from now on it is an error to use MTD function pointers directly - we have a corresponding API call for every pointer. By adding a leading "_" we achieve the following: 1. Make sure we convert every direct pointer users 2. A leading "_" suggests that this interface is internal and it becomes less likely that people will use them directly 3. Make sure all the out-of-tree modules stop compiling and the owners spot the big API change and amend them. Signed-off-by: Artem Bityutskiy Signed-off-by: David Woodhouse

mtd: convert remaining users to mtd_device_register()

2011-05-25T01:25:00Z

The older add_mtd_device()/add_mtd_partitions() and their removal counterparts will soon be gone. Replace uses with mtd_device_register() and mtd_device_unregister(). Signed-off-by: Jamie Iles Signed-off-by: Artem Bityutskiy Signed-off-by: David Woodhouse