diff mbox series

[03/14] firmware_loader: add a sanity check for firmware_request_builtin()

Message ID 20210917182226.3532898-4-mcgrof@kernel.org (mailing list archive)
State Not Applicable
Delegated to: Johannes Berg
Headers show
Series firmware_loader: built-in API and make x86 use it | expand

Commit Message

Luis Chamberlain Sept. 17, 2021, 6:22 p.m. UTC 
From: Luis Chamberlain <mcgrof@kernel.org>

Right now firmware_request_builtin() is used internally only
and so we have control over the callers. But if we want to expose
that API more broadly we should ensure the firmware pointer
is valid.

This doesn't fix any known issue, it just prepares us to later
expose this API to other users.

Signed-off-by: Luis Chamberlain <mcgrof@kernel.org>
---
 drivers/base/firmware_loader/main.c | 3 +++
 1 file changed, 3 insertions(+)
diff mbox series

Patch

diff --git a/drivers/base/firmware_loader/main.c b/drivers/base/firmware_loader/main.c
index eb4085b92ad4..d95b5fe5f700 100644
--- a/drivers/base/firmware_loader/main.c
+++ b/drivers/base/firmware_loader/main.c
@@ -115,6 +115,9 @@  static bool firmware_request_builtin(struct firmware *fw, const char *name)
 {
 	struct builtin_fw *b_fw;
 
+	if (!fw)
+		return false;
+
 	for (b_fw = __start_builtin_fw; b_fw != __end_builtin_fw; b_fw++) {
 		if (strcmp(name, b_fw->name) == 0) {
 			fw->size = b_fw->size;