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2023-08-18Documentation/ABI: Fix typosBjorn Helgaas1-1/+1
Fix typos in Documentation/ABI. The changes are in descriptions or comments where they shouldn't affect use of the ABIs. Signed-off-by: Bjorn Helgaas <[email protected]> Reviewed-by: Randy Dunlap <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Jonathan Corbet <[email protected]>
2018-04-22mtd: Add sysfs attribute for mtd OOB available sizeXiaolei Li1-0/+8
Expose mtd OOB available size by sysfs file. Then users can get available OOB size by accessing /sys/class/mtd/mtdX/oobavail. Signed-off-by: Xiaolei Li <[email protected]> Signed-off-by: Boris Brezillon <[email protected]>
2017-07-13Documentation: ABI: mtd: describe "offset" more preciselyRafał Miłecki1-3/+3
So far Linux supported only two levels of MTD devices so we didn't need a very precise description for this sysfs file. With commit 97519dc52b44a ("mtd: partitions: add support for subpartitions") there is support for a tree structure so we should have more precise description. Using "parent" and "flash device" makes it more accurate. Signed-off-by: Rafał Miłecki <[email protected]> Signed-off-by: Brian Norris <[email protected]>
2015-04-05mtd: part: Add sysfs variable for offset of partitionDan Ehrenberg1-0/+10
This patch makes a sysfs variable called 'offset' on each partition which contains the offset in bytes from the beginning of the master device that the partition starts. Signed-off-by: Dan Ehrenberg <[email protected]> Signed-off-by: Brian Norris <[email protected]>
2014-07-08mtd: Add sysfs attributes to expose the ECC stats fieldsEzequiel Garcia1-0/+38
These new sysfs device attributes allow us to retrieve the ECC and bad block stats by poking a sysfs file, which is often more convenient than using the ioctl. Signed-off-by: Ezequiel Garcia <[email protected]> Tested-by: Pekon Gupta <[email protected]> Signed-off-by: Brian Norris <[email protected]>
2013-10-27mtd: add MTD_MLCNANDFLASH case for mtd_type_show()Huang Shijie1-1/+1
The current mtd_type_show() misses the MTD_MLCNANDFLASH case. This patch adds the case for it, and also updates the ABI. Signed-off-by: Huang Shijie <[email protected]> Signed-off-by: Brian Norris <[email protected]>
2013-08-30mtd: update the ABI document about the ecc step sizeHuang Shijie1-3/+14
We add a new sys node for ecc step size. So update the ABI document about it. Signed-off-by: Huang Shijie <[email protected]> Signed-off-by: Artem Bityutskiy <[email protected]> [Brian: edited description, modified 'ecc_strength'] Signed-off-by: Brian Norris <[email protected]> Signed-off-by: David Woodhouse <[email protected]>
2013-04-05Documentation: mtd: amend the sysfs docs after mtdchar mergeArtem Bityutskiy1-4/+2
The mtdchar module was merged with the mtdcore module, which means that the MTD_CHAR Kconfig symbol does not exist any more. Signed-off-by: Artem Bityutskiy <[email protected]> Signed-off-by: David Woodhouse <[email protected]>
2012-07-06mtd: ABI documentation: clarification of bitflip_thresholdMike Dunn1-8/+9
The -EUCLEAN return value applies to mtd_read_oob() as well as mtd_read(), but only mtd_read() was mentioned in the blurd on bitflip_threshold in the ABI documentation. Signed-off-by: Mike Dunn <[email protected]> Signed-off-by: Artem Bityutskiy <[email protected]> Signed-off-by: David Woodhouse <[email protected]>
2012-05-13mtd: driver _read() returns max_bitflips; mtd_read() returns -EUCLEANMike Dunn1-2/+5
The drivers' _read() method, absent an error, returns a non-negative integer indicating the maximum number of bit errors that were corrected in any one region comprising an ecc step. MTD returns -EUCLEAN if this is >= bitflip_threshold, 0 otherwise. If bitflip_threshold is zero, the comparison is not made since these devices lack ECC and always return zero in the non-error case (thanks Brian)¹. Note that this is a subtle change to the driver interface. This and the preceding patches in this set were tested with ubi on top of the nandsim and docg4 devices, running the ubi test io_basic from mtd-utils. ¹ http://lists.infradead.org/pipermail/linux-mtd/2012-March/040468.html Signed-off-by: Mike Dunn <[email protected]> Acked-by: Robert Jarzmik <[email protected]> Acked-by: Brian Norris <[email protected]> Ivan Djelic <[email protected]> Signed-off-by: Artem Bityutskiy <[email protected]> Signed-off-by: David Woodhouse <[email protected]>
2012-05-13mtd: bitflip_threshold added to mtd_info and sysfsMike Dunn1-0/+36
An element 'bitflip_threshold' is added to struct mtd_info, and also exposed as a read/write variable in sysfs. This will be used to determine whether or not mtd_read() returns -EUCLEAN or 0 (absent a hard error). If the driver leaves it as zero, mtd will set it to a default value of ecc_strength. This v2 adds the line that propagates bitflip_threshold from the master to the partitions - thanks Ivan¹. ¹ http://lists.infradead.org/pipermail/linux-mtd/2012-April/040900.html Signed-off-by: Mike Dunn <[email protected]> Signed-off-by: Artem Bityutskiy <[email protected]> Signed-off-by: David Woodhouse <[email protected]>
2012-05-13mtd: expose ecc_strength through sysfsMike Dunn1-0/+12
ecc_strength element of struct mtd_info is exposed as a read-only variable in sysfs. Signed-off-by: Mike Dunn <[email protected]> Signed-off-by: Artem Bityutskiy <[email protected]> Signed-off-by: David Woodhouse <[email protected]>
2009-05-29Documentation: add MTD sysfs docsKevin Cernekee1-0/+125
Signed-off-by: Kevin Cernekee <[email protected]> Signed-off-by: Artem Bityutskiy <[email protected]> Signed-off-by: David Woodhouse <[email protected]>
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