kernel.git/drivers/mtd/ubi/io.c, branch linux-3.17.y

UBI: avoid program operation on NOR flash after erasure interrupted

2014-01-09T16:25:38Z

nor_erase_prepare() will be called before erase a NOR flash, it will program '0' into a block to mark this block. But program data into a erasure interrupted block can cause program timtout(several minutes at most) error, could impact other operation on NOR flash. So UBIFS can read this block first to avoid unneeded program operation. This patch try to put read operation at head of write operation in nor_erase_prepare(), read out the data. If the data is already corrupt, then no need to program any data into this block, just go to erase this block. This patch is validated on Micron NOR flash, part number is：JS28F512M29EWHA Signed-off-by: Qi Wang Signed-off-by: Artem Bityutskiy

UBI: introduce helpers dbg_chk_{io, gen}

2012-12-10T11:38:59Z

With this patch code is a bit more readable and there's no generated code or functionality impact. Furthermore, this abstracts implementation details and will allow to change ubi_debug_info in a less invasive way. Signed-off-by: Ezequiel Garcia Signed-off-by: Artem Bityutskiy

UBI: print less

2012-09-04T06:39:02Z

UBI currently prints a lot of information when it mounts a volume, which bothers some people. Make it less chatty - print only important information by default. Get rid of 'dbg_msg()' macro completely. Reported-by: Uwe Kleine-König Signed-off-by: Artem Bityutskiy

UBI: comply with coding style

2012-09-04T06:39:01Z

Join all the split printk lines in order to stop checkpatch complaining. Signed-off-by: Artem Bityutskiy

UBI: amend comments after all the renamings

2012-05-20T17:26:04Z

This patch amends commentaries in scan.[ch] to match the new logic. Reminder - we did the restructuring to prepare the code for adding the fastmap. This patch also renames a couple of functions - it was too difficult to separate out that change and I decided that it is not too bad to have it in the same patch with commentaries changes. Signed-off-by: Artem Bityutskiy

UBI: rename few functions for consistency

2012-05-20T17:26:01Z

Signed-off-by: Artem Bityutskiy

UBI: get rid of dbg_err

2012-05-20T17:26:00Z

This patch removes the 'dbg_err()' macro and we now use 'ubi_err' instead. The idea of 'dbg_err()' was to compile out some error message to make the binary a bit smaller - but I think it was a bad idea. Signed-off-by: Artem Bityutskiy

UBI: clean-up terminology for self-checks in io.c

2012-05-20T17:26:00Z

We have the "sefl-check" feature in UBI, but for historical reasons many corresponding functions and commentaries in the code use term "paranoid check" instead. Let's clean this up and use "self-check" everywhere. This patch renames functions, amends comments and messages. It touches only the io.c file. Signed-off-by: Artem Bityutskiy

UBI: remove Kconfig debugging option

2012-05-20T17:26:00Z

This patch kills the UBI debugging Kconfig option completely and makes all the debugging stuff to be always compiled-in. It was pain in the neck to maintain this useless option because all users I am aware of have debugging enabled anyway - how else will you diagnose errors otherwise? Signed-off-by: Artem Bityutskiy

UBI: always warn if case of I/O errors

2012-05-20T17:25:58Z

Currently UBI silently retries I/O operation in case of errors. This patch makes it emit a warning before retrying. This should allow users notice issues earlier. Signed-off-by: Artem Bityutskiy