[PATCH] clk: tegra: annotate struct tegra210_clk_emc_provider with __counted_by_ptr

[PATCH] clk: tegra: annotate struct tegra210_clk_emc_provider with __counted_by_ptr

[Bill Wendling]

Annotate the "configs" pointer field of "struct
tegra210_clk_emc_provider" with the "__counted_by_ptr" attribute,
allowing the compiler to perform runtime bounds checking on accesses to
"configs" based on the value of "num_configs".

The "emc->provider.configs = devm_kcalloc(...)" call uses
"emc->num_timings" for the number of elements, which is then assigned to
"emc->provider.num_configs" before any accesses to "configs". The
"num_configs" field isn't modified after assignment.

Cc: codemender-patching+linux@google.com
Assisted-by: LLM
Signed-off-by: Bill Wendling <morbo@google.com>
---
 include/linux/clk/tegra.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/linux/clk/tegra.h b/include/linux/clk/tegra.h
index 3650e926e93f..f1034e14c1a4 100644
--- a/include/linux/clk/tegra.h
+++ b/include/linux/clk/tegra.h
@@ -170,7 +170,7 @@ struct tegra210_clk_emc_provider {
 	struct module *owner;
 	struct device *dev;
 
-	struct tegra210_clk_emc_config *configs;
+	struct tegra210_clk_emc_config *configs __counted_by_ptr(num_configs);
 	unsigned int num_configs;
 
 	int (*set_rate)(struct device *dev,
-- 
2.55.0.1082.g2b9226bbc0-goog