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git.kernel.org/linux-stable/linux-4.20.y
linux-imx/drivers/lightnvm
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Geert Uytterhoeven 8fcd2eb827 lightnvm: Fix uninitialized return value in nvm_get_chunk_meta() 
[ Upstream commit 55e58c5e78 ]

With gcc 4.1:

    drivers/lightnvm/core.c: In function ‘nvm_get_bb_meta’:
    drivers/lightnvm/core.c:977: warning: ‘ret’ may be used uninitialized in this function

and

    drivers/nvme/host/lightnvm.c: In function ‘nvme_nvm_get_chk_meta’:
    drivers/nvme/host/lightnvm.c:580: warning: ‘ret’ may be used uninitialized in this function

Indeed, if (for the former) the number of channels or LUNs is zero, or
(for both) the passed number of chunks is zero, ret will be returned
uninitialized.

Fix this by preinitializing ret to zero.

Fixes: aff3fb18f9 ("lightnvm: move bad block and chunk state logic to core")
Fixes: a294c19945 ("lightnvm: implement get log report chunk helpers")
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Matias Bjørling <mb@lightnvm.io>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2019-02-12 20:02:18 +01:00
..
core.c lightnvm: Fix uninitialized return value in nvm_get_chunk_meta() 2019-02-12 20:02:18 +01:00
Kconfig lightnvm: remove dependencies on BLK_DEV_NVME and PCI 2018-10-09 08:25:05 -06:00
Makefile lightnvm: remove rrpc 2018-01-05 08:50:12 -07:00
pblk-cache.c lightnvm: pblk: add SPDX license tag 2018-10-09 08:25:08 -06:00
pblk-core.c lightnvm: pblk: add lock protection to list operations 2019-02-12 20:02:18 +01:00
pblk-gc.c lightnvm: pblk: add SPDX license tag 2018-10-09 08:25:08 -06:00
pblk-init.c lightnvm: pblk: guarantee that backpointer is respected on writer stall 2018-10-09 08:25:08 -06:00
pblk-map.c lightnvm: pblk: add SPDX license tag 2018-10-09 08:25:08 -06:00
pblk-rb.c lightnvm: pblk: guarantee that backpointer is respected on writer stall 2018-10-09 08:25:08 -06:00
pblk-read.c lightnvm: pblk: add SPDX license tag 2018-10-09 08:25:08 -06:00
pblk-recovery.c lightnvm: pblk: add SPDX license tag 2018-10-09 08:25:08 -06:00
pblk-rl.c lightnvm: pblk: add SPDX license tag 2018-10-09 08:25:08 -06:00
pblk-sysfs.c lightnvm: pblk: fix race on sysfs line state 2018-10-09 08:25:08 -06:00
pblk-trace.h lightnvm: pblk: add tracing for chunk resets 2018-10-09 08:25:07 -06:00
pblk-write.c lightnvm: pblk: fix resubmission of overwritten write err lbas 2019-02-12 20:02:18 +01:00
pblk.h lightnvm: pblk: guarantee that backpointer is respected on writer stall 2018-10-09 08:25:08 -06:00