[PATCH] drm/i915: Indicate which pipe lied about its interrupts

[Ville Syrjala]

From: Ville Syrjälä <ville.syrjala at linux.intel.com>

Indicate which pipe signalled the spurious DE PIPE interrupt.
Might help with debugging a bit if we know where the interrupt
is supposedly coming from.

Signed-off-by: Ville Syrjälä <ville.syrjala at linux.intel.com>
---
 drivers/gpu/drm/i915/display/intel_display_irq.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/display/intel_display_irq.c b/drivers/gpu/drm/i915/display/intel_display_irq.c
index 3e73832e5e81..a3261c7aad72 100644
--- a/drivers/gpu/drm/i915/display/intel_display_irq.c
+++ b/drivers/gpu/drm/i915/display/intel_display_irq.c
@@ -1418,7 +1418,8 @@ void gen8_de_irq_handler(struct intel_display *display, u32 master_ctl)
 		iir = intel_de_read(display, GEN8_DE_PIPE_IIR(pipe));
 		if (!iir) {
 			drm_err_ratelimited(display->drm,
-					    "The master control interrupt lied (DE PIPE)!\n");
+					    "The master control interrupt lied (DE PIPE %c)!\n",
+					    pipe_name(pipe));
 			continue;
 		}
 
-- 
2.49.0