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| author | Geert Uytterhoeven <geert@linux-m68k.org> | 2018-12-11 20:16:08 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-02-12 20:02:18 +0100 |
| commit | 8fcd2eb827e14b49785db87ec704f6a8e08a6c2c (patch) | |
| tree | e5084f1e7a12c1068c6f8c8c4b804ebf07775b3c /drivers/nvme | |
| parent | c7ce08e203f645dc617fcd8b6cfebfd7090a15da (diff) | |
lightnvm: Fix uninitialized return value in nvm_get_chunk_meta()
[ Upstream commit 55e58c5e78aad9d3246f57e7718cf5ee7adde9e3 ]
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: aff3fb18f957de93 ("lightnvm: move bad block and chunk state logic to core")
Fixes: a294c199455187d1 ("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>
Diffstat (limited to 'drivers/nvme')
| -rw-r--r-- | drivers/nvme/host/lightnvm.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/nvme/host/lightnvm.c b/drivers/nvme/host/lightnvm.c index a4f3b263cd6c..d64805dc8efb 100644 --- a/drivers/nvme/host/lightnvm.c +++ b/drivers/nvme/host/lightnvm.c @@ -577,7 +577,8 @@ static int nvme_nvm_get_chk_meta(struct nvm_dev *ndev, struct ppa_addr ppa; size_t left = nchks * sizeof(struct nvme_nvm_chk_meta); size_t log_pos, offset, len; - int ret, i, max_len; + int i, max_len; + int ret = 0; /* * limit requests to maximum 256K to avoid issuing arbitrary large |