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| author | Alexandre Belloni <alexandre.belloni@bootlin.com> | 2018-08-23 23:36:00 +0200 |
|---|---|---|
| committer | Olof Johansson <olof@lixom.net> | 2018-09-25 22:57:25 +0200 |
| commit | 64e9e22e68512da8df3c9a7430f07621e48db3c2 (patch) | |
| tree | 584df8f3b1e15ed9103c26cd146be64b83e8fbef /drivers/soc | |
| parent | Merge tag 'arm-soc/for-4.19/devicetree-fixes' of https://github.com/Broadcom/... (diff) | |
| download | linux-64e9e22e68512da8df3c9a7430f07621e48db3c2.tar.xz linux-64e9e22e68512da8df3c9a7430f07621e48db3c2.zip | |
soc: fsl: qbman: qman: avoid allocating from non existing gen_pool
If the qman driver didn't probe, calling qman_alloc_fqid_range,
qman_alloc_pool_range or qman_alloc_cgrid_range (as done in dpaa_eth) will
pass a NULL pointer to gen_pool_alloc, leading to a NULL pointer
dereference.
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Reviewed-by: Roy Pledge <roy.pledge@nxp.com>
Signed-off-by: Li Yang <leoyang.li@nxp.com>
(cherry picked from commit f72487a2788aa70c3aee1d0ebd5470de9bac953a)
Signed-off-by: Olof Johansson <olof@lixom.net>
Diffstat (limited to 'drivers/soc')
| -rw-r--r-- | drivers/soc/fsl/qbman/qman.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/soc/fsl/qbman/qman.c b/drivers/soc/fsl/qbman/qman.c index ecb22749df0b..8cc015183043 100644 --- a/drivers/soc/fsl/qbman/qman.c +++ b/drivers/soc/fsl/qbman/qman.c @@ -2729,6 +2729,9 @@ static int qman_alloc_range(struct gen_pool *p, u32 *result, u32 cnt) { unsigned long addr; + if (!p) + return -ENODEV; + addr = gen_pool_alloc(p, cnt); if (!addr) return -ENOMEM; |