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authorGreg Kroah-Hartman2018-07-16 09:04:54 +0200
committerGreg Kroah-Hartman2018-07-16 09:04:54 +0200
commit83cf9cd6d50ed4f7e6ae265e80e38b235c792f5f (patch)
tree6016c386c321cd6a3e8575e01ed9f10834fc5081 /drivers/nvmem
parentparport: ieee1284: mark expected switch fall-throughs (diff)
parentLinux 4.18-rc5 (diff)
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Merge 4.18-rc5 into char-misc-next
We want the char-misc fixes in here as well. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/nvmem')
-rw-r--r--drivers/nvmem/core.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/nvmem/core.c b/drivers/nvmem/core.c
index 34b71b1c69f4..aa1657831b70 100644
--- a/drivers/nvmem/core.c
+++ b/drivers/nvmem/core.c
@@ -934,6 +934,10 @@ struct nvmem_cell *nvmem_cell_get(struct device *dev, const char *cell_id)
return cell;
}
+ /* NULL cell_id only allowed for device tree; invalid otherwise */
+ if (!cell_id)
+ return ERR_PTR(-EINVAL);
+
return nvmem_cell_get_from_list(cell_id);
}
EXPORT_SYMBOL_GPL(nvmem_cell_get);