[PATCH] drm/etnaviv: initialize idle mask before querying the HW db

[PATCH] drm/etnaviv: initialize idle mask before querying the HW db

[Lucas Stach]

If there is a match in the HW DB, the function is left early, before
inititalizing the idle mask. Fix this by doing the init earlier, as
only old GPUs, not present in the HW DB need a different idle mask.

Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
---
 drivers/gpu/drm/etnaviv/etnaviv_gpu.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/etnaviv/etnaviv_gpu.c b/drivers/gpu/drm/etnaviv/etnaviv_gpu.c
index 6904535475de..72d01e873160 100644
--- a/drivers/gpu/drm/etnaviv/etnaviv_gpu.c
+++ b/drivers/gpu/drm/etnaviv/etnaviv_gpu.c
@@ -365,6 +365,7 @@ static void etnaviv_hw_identify(struct etnaviv_gpu *gpu)
 	dev_info(gpu->dev, "model: GC%x, revision: %x\n",
 		 gpu->identity.model, gpu->identity.revision);
 
+	gpu->idle_mask = ~VIVS_HI_IDLE_STATE_AXI_LP;
 	/*
 	 * If there is a match in the HWDB, we aren't interested in the
 	 * remaining register values, as they might be wrong.
@@ -412,7 +413,7 @@ static void etnaviv_hw_identify(struct etnaviv_gpu *gpu)
 	}
 
 	/* GC600 idle register reports zero bits where modules aren't present */
-	if (gpu->identity.model == chipModel_GC600) {
+	if (gpu->identity.model == chipModel_GC600)
 		gpu->idle_mask = VIVS_HI_IDLE_STATE_TX |
 				 VIVS_HI_IDLE_STATE_RA |
 				 VIVS_HI_IDLE_STATE_SE |
@@ -421,9 +422,6 @@ static void etnaviv_hw_identify(struct etnaviv_gpu *gpu)
 				 VIVS_HI_IDLE_STATE_PE |
 				 VIVS_HI_IDLE_STATE_DE |
 				 VIVS_HI_IDLE_STATE_FE;
-	} else {
-		gpu->idle_mask = ~VIVS_HI_IDLE_STATE_AXI_LP;
-	}
 
 	etnaviv_hw_specs(gpu);
 }
-- 
2.20.1

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Re: [PATCH] drm/etnaviv: initialize idle mask before querying the HW db

[Philipp Zabel]

On Wed, 2019-04-17 at 14:21 +0200, Lucas Stach wrote:
> If there is a match in the HW DB, the function is left early, before
> inititalizing the idle mask. Fix this by doing the init earlier, as
> only old GPUs, not present in the HW DB need a different idle mask.
> 
> Signed-off-by: Lucas Stach <l.stach@pengutronix.de>

Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de>

regards
Philipp
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