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| author | Pan Bian <bianpan2016@163.com> | 2016-12-01 10:10:46 +0800 |
|---|---|---|
| committer | Jens Axboe <axboe@fb.com> | 2016-12-01 08:01:14 -0700 |
| commit | 5b0e34e1949ed580ac330041dccb0334b926554e (patch) | |
| tree | 6ed363eecdcb05bdb2eb793a71f8c4bc34ee23c6 /drivers/block/mtip32xx/mtip32xx.c | |
| parent | d262920998c891dfd87cf73f823f0ff60e20cdad (diff) | |
| download | linux-0-day-5b0e34e1949ed580ac330041dccb0334b926554e.tar.gz linux-0-day-5b0e34e1949ed580ac330041dccb0334b926554e.tar.xz | |
block: mtip32xx: set error code on failure
Fix bug https://bugzilla.kernel.org/show_bug.cgi?id=188531. In function
mtip_block_initialize(), variable rv takes the return value, and its
value should be negative on errors. rv is initialized as 0 and is not
reset when the call to ida_pre_get() fails. So 0 may be returned.
The return value 0 indicates that there is no error, which may be
inconsistent with the execution status. This patch fixes the bug by
explicitly assigning -ENOMEM to rv on the branch that ida_pre_get()
fails.
Signed-off-by: Pan Bian <bianpan2016@163.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'drivers/block/mtip32xx/mtip32xx.c')
| -rw-r--r-- | drivers/block/mtip32xx/mtip32xx.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/block/mtip32xx/mtip32xx.c b/drivers/block/mtip32xx/mtip32xx.c index cfe0108a7d30a..f96ab717534c4 100644 --- a/drivers/block/mtip32xx/mtip32xx.c +++ b/drivers/block/mtip32xx/mtip32xx.c @@ -3933,8 +3933,10 @@ static int mtip_block_initialize(struct driver_data *dd) /* Generate the disk name, implemented same as in sd.c */ do { - if (!ida_pre_get(&rssd_index_ida, GFP_KERNEL)) + if (!ida_pre_get(&rssd_index_ida, GFP_KERNEL)) { + rv = -ENOMEM; goto ida_get_error; + } spin_lock(&rssd_index_lock); rv = ida_get_new(&rssd_index_ida, &index); |