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authorGeert Uytterhoeven <geert@linux-m68k.org>2018-12-11 22:16:08 +0300
committerJens Axboe <axboe@kernel.dk>2018-12-11 22:22:33 +0300
commit55e58c5e78aad9d3246f57e7718cf5ee7adde9e3 (patch)
tree2a7b324655ff1fe53a9cbbca911fd2fd0b9887b9 /drivers/lightnvm/core.c
parentf40a62d2674b317a263512996f9a7abbfc8178ec (diff)
downloadlinux-55e58c5e78aad9d3246f57e7718cf5ee7adde9e3.tar.xz
lightnvm: Fix uninitialized return value in nvm_get_chunk_meta()
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>
Diffstat (limited to 'drivers/lightnvm/core.c')
-rw-r--r--drivers/lightnvm/core.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/lightnvm/core.c b/drivers/lightnvm/core.c
index 60ab11fcc81c..10e541cb8dc3 100644
--- a/drivers/lightnvm/core.c
+++ b/drivers/lightnvm/core.c
@@ -974,7 +974,7 @@ static int nvm_get_bb_meta(struct nvm_dev *dev, sector_t slba,
struct ppa_addr ppa;
u8 *blks;
int ch, lun, nr_blks;
- int ret;
+ int ret = 0;
ppa.ppa = slba;
ppa = dev_to_generic_addr(dev, ppa);