From: Damien Lespiau Date: Tue, 15 Oct 2013 17:55:37 +0000 (+0100) Subject: drm/i915: Warn if we receive an interrupt after freeing the buffer X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=0c912c79eede0ba3dcc717a6e13de8766404c736;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git drm/i915: Warn if we receive an interrupt after freeing the buffer This shouldn't happen as the buffer is freed after disable pipe CRCs, but better be safe than sorry. Signed-off-by: Damien Lespiau Signed-off-by: Daniel Vetter --- diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c index 0b218285c2c1..b201a214279e 100644 --- a/drivers/gpu/drm/i915/i915_irq.c +++ b/drivers/gpu/drm/i915/i915_irq.c @@ -1197,6 +1197,11 @@ static void ivb_pipe_crc_update(struct drm_device *dev, enum pipe pipe) struct intel_pipe_crc_entry *entry; int head, tail; + if (!pipe_crc->entries) { + DRM_ERROR("spurious interrupt\n"); + return; + } + head = atomic_read(&pipe_crc->head); tail = atomic_read(&pipe_crc->tail);