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-rw-r--r--kernel/dma/contiguous.c6
1 files changed, 5 insertions, 1 deletions
diff --git a/kernel/dma/contiguous.c b/kernel/dma/contiguous.c
index 286d82329eb0..b2a87905846d 100644
--- a/kernel/dma/contiguous.c
+++ b/kernel/dma/contiguous.c
@@ -49,7 +49,11 @@ static phys_addr_t limit_cmdline;
static int __init early_cma(char *p)
{
- pr_debug("%s(%s)\n", __func__, p);
+ if (!p) {
+ pr_err("Config string not provided\n");
+ return -EINVAL;
+ }
+
size_cmdline = memparse(p, &p);
if (*p != '@')
return 0;