diff options
| author | Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> | 2023-07-31 16:37:41 -0500 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2023-07-31 23:22:12 +0100 |
| commit | 390e7066db29b985c5142513955797c1166b623a (patch) | |
| tree | 4867a1445f1dc34e10c3fd304005b2f502d84885 | |
| parent | 169e154b8f338e022f09536cfca7eb4f38aa80a4 (diff) | |
ASoC: SOF: sof-client-probes-ipc4: add checks to prevent static analysis warnings
make KCFLAGS='-fanalyzer' sound/soc/sof/ reports several NULL pointer
dereference paths.
sof_ipc4_probe_get_module_info() can return a NULL value, but it's
only tested in the init state. Static analyzers cannot know the probe
state machine and hence flags a potential issue for all calls of that
function.
Squelch these errors by adding the same check consistently.
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Rander Wang <rander.wang@intel.com>
Reviewed-by: Daniel Baluta <daniel.baluta@nxp.com>
Reviewed-by: Yaochun Hung <yc.hung@mediatek.com>
Link: https://lore.kernel.org/r/20230731213748.440285-2-pierre-louis.bossart@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
| -rw-r--r-- | sound/soc/sof/sof-client-probes-ipc4.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/sound/soc/sof/sof-client-probes-ipc4.c b/sound/soc/sof/sof-client-probes-ipc4.c index ea21ef176c42..c56a85854d92 100644 --- a/sound/soc/sof/sof-client-probes-ipc4.c +++ b/sound/soc/sof/sof-client-probes-ipc4.c @@ -146,6 +146,9 @@ static int ipc4_probes_deinit(struct sof_client_dev *cdev) struct sof_man4_module *mentry = sof_ipc4_probe_get_module_info(cdev); struct sof_ipc4_msg msg; + if (!mentry) + return -ENODEV; + msg.primary = mentry->id; msg.primary |= SOF_IPC4_MSG_TYPE_SET(SOF_IPC4_MOD_DELETE_INSTANCE); msg.primary |= SOF_IPC4_MSG_DIR(SOF_IPC4_MSG_REQUEST); @@ -197,6 +200,9 @@ static int ipc4_probes_points_add(struct sof_client_dev *cdev, struct sof_ipc4_msg msg; int i, ret; + if (!mentry) + return -ENODEV; + /* The sof_probe_point_desc and sof_ipc4_probe_point structs * are of same size and even the integers are the same in the * same order, and similar meaning, but since there is no @@ -247,6 +253,9 @@ static int ipc4_probes_points_remove(struct sof_client_dev *cdev, u32 *probe_point_ids; int i, ret; + if (!mentry) + return -ENODEV; + probe_point_ids = kcalloc(num_buffer_id, sizeof(*probe_point_ids), GFP_KERNEL); if (!probe_point_ids) |