Messages in this thread | | | From | Sean Nyekjaer <> | Subject | [PATCH v2 0/4] mtd: core: protect access to mtd devices while in suspend | Date | Wed, 20 Oct 2021 10:45:30 +0200 |
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Follow-up on discussion in: https://lkml.org/lkml/2021/10/4/41 https://lkml.org/lkml/2021/10/11/435
Changes since v1: - removed __mtd_suspend/__mtd_resume functions as they are not used by mtdconcat anymore. - only master mtd_info is used for mtd_{start,end}_access(). Warn if we got mtd's. - added Boris patch for using uninitialized _suspend/_resume hooks when bbt scanning - mtdconcat uses device _suspend/_resume hooks - I don't really like the macro proposal from Boris mtd_no_suspend_void_call()/mtd_no_suspend_ret_call() I think they make the code complex to read and the macro's doesn't fit every where anyway...
Changes since from rfc v1/v2: - added access protection for all device access hooks in mtd_info. - added Suggested-by to [1/3] patch. - removed refereces to commit ef347c0cfd61 ("mtd: rawnand: gpmi: Implement exec_op") from commit msg as commit 013e6292aaf5 ("mtd: rawnand: Simplify the locking") is to be blamed. - tested on a kernel with LOCKDEP enabled.
Sean Nyekjaer (4): mtd: rawnand: nand_bbt: hide suspend/resume hooks while scanning bbt mtd: core: protect access to MTD devices while in suspend mtd: rawnand: remove suspended check mtd: mtdconcat: add suspend lock handling
drivers/mtd/mtdconcat.c | 7 +- drivers/mtd/mtdcore.c | 131 +++++++++++++++++++++++++++---- drivers/mtd/nand/raw/nand_base.c | 52 +++--------- drivers/mtd/nand/raw/nand_bbt.c | 28 ++++++- include/linux/mtd/mtd.h | 81 +++++++++++++++---- include/linux/mtd/rawnand.h | 5 +- 6 files changed, 227 insertions(+), 77 deletions(-)
-- 2.33.0
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