drm/tegra: firewall: Check for is_addr_reg existence in IMM check

[ Upstream commit 1b5c09de25e8c08655c270a70e5e74e93b6bad1f ]

In the IMM opcode check, don't call is_addr_reg if it's not set.

Fixes: 8cc95f3fd35e ("drm/tegra: Add job firewall")
Signed-off-by: Mikko Perttunen <mperttunen@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/gpu/drm/tegra/firewall.c b/drivers/gpu/drm/tegra/firewall.c
index 1824d2db0e2ce57408f578b7b98e055a54f55025..d53f890fa6893313ff7c384b14cd0dc1bab276d4 100644 (file)
--- a/drivers/gpu/drm/tegra/firewall.c
+++ b/drivers/gpu/drm/tegra/firewall.c
@@ -97,6 +97,9 @@ static int fw_check_regs_imm(struct tegra_drm_firewall *fw, u32 offset)
 {
        bool is_addr;
 
+       if (!fw->client->ops->is_addr_reg)
+               return 0;
+
        is_addr = fw->client->ops->is_addr_reg(fw->client->base.dev, fw->class,
                                               offset);
        if (is_addr)