kernel/linux.git/drivers/mtd/mtdblock.c, branch v4.17.1

mtd: Unconditionally update ->fail_addr and ->addr in part_erase()

2018-03-15T17:22:26+00:00

->fail_addr and ->addr can be updated no matter the result of parent->_erase(), we just need to remove the code doing the same thing in mtd_erase_callback() to avoid adjusting those fields twice. Note that this can be done because all MTD users have been converted to not pass an erase_info->callback() and are thus only taking the ->addr_fail and ->addr fields into account after part_erase() has returned. While we're at it, get rid of the erase_info->mtd field which was only needed to let mtd_erase_callback() get the partition device back. Signed-off-by: Boris Brezillon Reviewed-by: Richard Weinberger

mtd: Stop assuming mtd_erase() is asynchronous

2018-03-15T17:21:07+00:00

None of the mtd->_erase() implementations work in an asynchronous manner, so let's simplify MTD users that call mtd_erase(). All they need to do is check the value returned by mtd_erase() and assume that != 0 means failure. Signed-off-by: Boris Brezillon Reviewed-by: Richard Weinberger

mtd: mtdblock: remove the needless mtdblks_lock

2015-01-07T20:51:56+00:00

The global lock mtdblks_lock was used to protect the original mtdblks array to avoid race conditions. As the mtdblks array was already gone, but the mtdblks_lock is left, and it causes latency when open/release dev. So we need to remove it here. Signed-off-by: Gu Zheng Signed-off-by: Brian Norris

mtd: Move major number definitions to major.h

2013-11-07T07:32:59+00:00

This patch moves the char and block major number definitions to major.h to be with the rest of the major numbers. While doing this, include major.h in the files that need it. Signed-off-by: Ezequiel Garcia Signed-off-by: Brian Norris

mtd: Use MTD_BLOCK_MAJOR instead of the magic number

2013-11-07T07:32:47+00:00

Signed-off-by: Ezequiel Garcia Signed-off-by: Brian Norris

mtd_blktrans_ops->release() should return void

2013-05-06T01:31:22+00:00

Both existing instances always return 0 and even if they didn't, the value would be lost on the way out. Just don't bother... Signed-off-by: Al Viro

mtd: mtdblock: call mtd_sync() only if opened for write

2012-03-26T23:11:11+00:00

Because it is useless to call it if the device is opened in R/O mode, and also harmful: on CFI NOR flash it may block for long time waiting for erase operations to complete is another partition with a R/W file-system on this chip. Artem Bityutskiy: write commit message, amend the patch to match the latest tree (we use mtd_sync(), not mtd->sync() nowadays). Signed-off-by: Alexander Stein Signed-off-by: Artem Bityutskiy Signed-off-by: David Woodhouse

mtd: do not use mtd->sync directly

2012-01-09T18:26:21+00:00

This patch teaches 'mtd_sync()' to do nothing when the MTD driver does not have the '->sync()' method, which allows us to remove all direct 'mtd->sync' accesses. Signed-off-by: Artem Bityutskiy Signed-off-by: David Woodhouse

mtd: introduce mtd_sync interface

2012-01-09T18:25:35+00:00

Signed-off-by: Artem Bityutskiy Signed-off-by: David Woodhouse

mtd: introduce mtd_write interface

2012-01-09T18:25:20+00:00

Signed-off-by: Artem Bityutskiy Signed-off-by: David Woodhouse