From c33246d793b5bb9d8be7c67918136c310185c23d Mon Sep 17 00:00:00 2001 From: Lucas Stach Date: Wed, 6 Jan 2016 14:36:40 +0100 Subject: [PATCH] drm/etnaviv: fix workaround for GC500 The hardware description macros define the mask and shifts the wrong way around for the intended use, leading to the condition never being true and the chip revision ending up with the wrong value. Reported-by: Dan Carpenter Signed-off-by: Lucas Stach Acked-by: Christian Gmeiner --- drivers/gpu/drm/etnaviv/etnaviv_gpu.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/etnaviv/etnaviv_gpu.c b/drivers/gpu/drm/etnaviv/etnaviv_gpu.c index d39093dc37e6..056a72e6ed26 100644 --- a/drivers/gpu/drm/etnaviv/etnaviv_gpu.c +++ b/drivers/gpu/drm/etnaviv/etnaviv_gpu.c @@ -251,9 +251,12 @@ static void etnaviv_hw_identify(struct etnaviv_gpu *gpu) chipIdentity = gpu_read(gpu, VIVS_HI_CHIP_IDENTITY); /* Special case for older graphic cores. */ - if (VIVS_HI_CHIP_IDENTITY_FAMILY(chipIdentity) == 0x01) { + if (((chipIdentity & VIVS_HI_CHIP_IDENTITY_FAMILY__MASK) + >> VIVS_HI_CHIP_IDENTITY_FAMILY__SHIFT) == 0x01) { gpu->identity.model = 0x500; /* gc500 */ - gpu->identity.revision = VIVS_HI_CHIP_IDENTITY_REVISION(chipIdentity); + gpu->identity.revision = + (chipIdentity & VIVS_HI_CHIP_IDENTITY_REVISION__MASK) + >> VIVS_HI_CHIP_IDENTITY_REVISION__SHIFT; } else { gpu->identity.model = gpu_read(gpu, VIVS_HI_CHIP_MODEL);