Static analysis issue: In assert_port_valid, add a check to ensure port != PORT_NONE, as that is not a valid port. The check must be explicit to prevent a bad bit shift operation in the general case via short-circuiting. It's not likely this will ever come up in a real use case, but it's at least worth guarding against.
It would probably also be pertinent to modify the behavior of the port_name function to correctly print PORT_NONE in this case, as currently the port would be reported as 'port @' by the debugger. But that should be done separately, and given port_name is mostly just a debug printing helper function anyways, fixing it is a low priority. Signed-off-by: Jonathan Cavitt <[email protected]> --- drivers/gpu/drm/i915/display/intel_display.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c index 7491e00e3858..250f31bb5938 100644 --- a/drivers/gpu/drm/i915/display/intel_display.c +++ b/drivers/gpu/drm/i915/display/intel_display.c @@ -7828,7 +7828,8 @@ static bool intel_ddi_crt_present(struct intel_display *display) bool assert_port_valid(struct intel_display *display, enum port port) { - return !drm_WARN(display->drm, !(DISPLAY_RUNTIME_INFO(display)->port_mask & BIT(port)), + return !drm_WARN(display->drm, + !(port < 0 || DISPLAY_RUNTIME_INFO(display)->port_mask & BIT(port)), "Platform does not support port %c\n", port_name(port)); } -- 2.43.0
