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authorDan Carpenter <dan.carpenter@linaro.org>2023-05-15 13:32:37 +0300
committerHans de Goede <hdegoede@redhat.com>2023-05-15 15:56:22 +0300
commit95e4b25192e9238fd2dbe85d96dd2f8fd1ce9d14 (patch)
treefb41a0a0fc3204148e5e47627916711ffd02d0b6 /drivers/platform
parentb54147fa374dbeadcb01b1762db1a793e06e37de (diff)
downloadlinux-95e4b25192e9238fd2dbe85d96dd2f8fd1ce9d14.tar.xz
platform/mellanox: mlxbf-pmc: fix sscanf() error checking
The sscanf() function never returns negatives. It returns the number of items successfully read. Fixes: 1a218d312e65 ("platform/mellanox: mlxbf-pmc: Add Mellanox BlueField PMC driver") Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org> Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Link: https://lore.kernel.org/r/4ccdfd28-099b-40bf-8d77-ad4ea2e76b93@kili.mountain Reviewed-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Diffstat (limited to 'drivers/platform')
-rw-r--r--drivers/platform/mellanox/mlxbf-pmc.c5
1 files changed, 2 insertions, 3 deletions
diff --git a/drivers/platform/mellanox/mlxbf-pmc.c b/drivers/platform/mellanox/mlxbf-pmc.c
index c2c9b0d3244c..be967d797c28 100644
--- a/drivers/platform/mellanox/mlxbf-pmc.c
+++ b/drivers/platform/mellanox/mlxbf-pmc.c
@@ -1348,9 +1348,8 @@ static int mlxbf_pmc_map_counters(struct device *dev)
for (i = 0; i < pmc->total_blocks; ++i) {
if (strstr(pmc->block_name[i], "tile")) {
- ret = sscanf(pmc->block_name[i], "tile%d", &tile_num);
- if (ret < 0)
- return ret;
+ if (sscanf(pmc->block_name[i], "tile%d", &tile_num) != 1)
+ return -EINVAL;
if (tile_num >= pmc->tile_count)
continue;