[patch] drm/amdgpu: off by one check in dce_v8_0_hpd_irq()

From: Dan Carpenter
Date: Thu Jun 11 2015 - 11:13:26 EST


It should be >= instead of > or we go beyond the end of the
interrupt_status_offsets[] array. Also I changed it to use
ARRAY_SIZE().

Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>

diff --git a/drivers/gpu/drm/amd/amdgpu/dce_v8_0.c b/drivers/gpu/drm/amd/amdgpu/dce_v8_0.c
index 9e8b9f1..0f70dc9 100644
--- a/drivers/gpu/drm/amd/amdgpu/dce_v8_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/dce_v8_0.c
@@ -3397,7 +3397,7 @@ static int dce_v8_0_hpd_irq(struct amdgpu_device *adev,
uint32_t disp_int, mask, int_control, tmp;
unsigned hpd;

- if (entry->src_data > 6) {
+ if (entry->src_data >= ARRAY_SIZE(interrupt_status_offsets)) {
DRM_DEBUG("Unhandled interrupt: %d %d\n", entry->src_id, entry->src_data);
return 0;
}
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