[PATCH] clk/ti/adpll: allocate room for terminating null

[Stephen Kitt]

The buffer allocated in ti_adpll_clk_get_name doesn't account for the
terminating null. This patch adds the extra byte, and switches to
snprintf to avoid overflowing.

Signed-off-by: Stephen Kitt <st...@sk2.org>
---
 drivers/clk/ti/adpll.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/drivers/clk/ti/adpll.c b/drivers/clk/ti/adpll.c
index fdfb90058504..27933c4e8a27 100644
--- a/drivers/clk/ti/adpll.c
+++ b/drivers/clk/ti/adpll.c
@@ -196,12 +196,13 @@ static const char *ti_adpll_clk_get_name(struct 
ti_adpll_data *d,
        } else {
                const char *base_name = "adpll";
                char *buf;
+               size_t size = 8 + 1 + strlen(base_name) + 1 +
+                             strlen(postfix) + 1;
 
-               buf = devm_kzalloc(d->dev, 8 + 1 + strlen(base_name) + 1 +
-                                   strlen(postfix), GFP_KERNEL);
+               buf = devm_kzalloc(d->dev, size, GFP_KERNEL);
                if (!buf)
                        return NULL;
-               sprintf(buf, "%08lx.%s.%s", d->pa, base_name, postfix);
+               snprintf(buf, size, "%08lx.%s.%s", d->pa, base_name, postfix);
                name = buf;
        }
 
-- 
2.20.1