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| author | Jiasheng Jiang <jiasheng@iscas.ac.cn> | 2022-01-11 15:34:11 +0800 |
|---|---|---|
| committer | Joel Stanley <joel@jms.id.au> | 2022-09-28 21:10:57 +0930 |
| commit | 35af9fb49bc5c6d61ef70b501c3a56fe161cce3e (patch) | |
| tree | af342474cb4eba49b16d434825e5db7ced98be3a /drivers/fsi | |
| parent | 89a286fb153643b9b0f6e78160857f86eef16ba5 (diff) | |
| download | linux-stable-35af9fb49bc5c6d61ef70b501c3a56fe161cce3e.tar.gz linux-stable-35af9fb49bc5c6d61ef70b501c3a56fe161cce3e.tar.bz2 linux-stable-35af9fb49bc5c6d61ef70b501c3a56fe161cce3e.zip | |
fsi: core: Check error number after calling ida_simple_get
If allocation fails, the ida_simple_get() will return error number.
So master->idx could be error number and be used in dev_set_name().
Therefore, it should be better to check it and return error if fails,
like the ida_simple_get() in __fsi_get_new_minor().
Fixes: 09aecfab93b8 ("drivers/fsi: Add fsi master definition")
Signed-off-by: Jiasheng Jiang <jiasheng@iscas.ac.cn>
Reviewed-by: Eddie James <eajames@linux.ibm.com>
Link: https://lore.kernel.org/r/20220111073411.614138-1-jiasheng@iscas.ac.cn
Signed-off-by: Joel Stanley <joel@jms.id.au>
Diffstat (limited to 'drivers/fsi')
| -rw-r--r-- | drivers/fsi/fsi-core.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/fsi/fsi-core.c b/drivers/fsi/fsi-core.c index 0d11a17c53a0..694e80c06665 100644 --- a/drivers/fsi/fsi-core.c +++ b/drivers/fsi/fsi-core.c @@ -1314,6 +1314,9 @@ int fsi_master_register(struct fsi_master *master) mutex_init(&master->scan_lock); master->idx = ida_simple_get(&master_ida, 0, INT_MAX, GFP_KERNEL); + if (master->idx < 0) + return master->idx; + dev_set_name(&master->dev, "fsi%d", master->idx); master->dev.class = &fsi_master_class; |