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From: Lubomir Rintel <lkundrak@v3.sk>
To: Lucas Stach <l.stach@pengutronix.de>
Cc: linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org,
	etnaviv@lists.freedesktop.org, Lubomir Rintel <lkundrak@v3.sk>,
	Russell King <linux+etnaviv@armlinux.org.uk>
Subject: [PATCH 2/3] drm/etnaviv: Don't ignore errors on getting clocks
Date: Wed, 13 May 2020 17:00:06 +0200	[thread overview]
Message-ID: <20200513150007.1315395-3-lkundrak@v3.sk> (raw)
In-Reply-To: <20200513150007.1315395-1-lkundrak@v3.sk>

There might be good reasons why the getting a clock failed. To treat the
clocks as optional we're specifically only interested in ignoring -ENOENT,
and devm_clk_get_optional() does just that.

Signed-off-by: Lubomir Rintel <lkundrak@v3.sk>
---
 drivers/gpu/drm/etnaviv/etnaviv_gpu.c | 16 ++++++++--------
 1 file changed, 8 insertions(+), 8 deletions(-)

diff --git a/drivers/gpu/drm/etnaviv/etnaviv_gpu.c b/drivers/gpu/drm/etnaviv/etnaviv_gpu.c
index c6dacfe3d321..e7dbb924f576 100644
--- a/drivers/gpu/drm/etnaviv/etnaviv_gpu.c
+++ b/drivers/gpu/drm/etnaviv/etnaviv_gpu.c
@@ -1786,26 +1786,26 @@ static int etnaviv_gpu_platform_probe(struct platform_device *pdev)
 	}
 
 	/* Get Clocks: */
-	gpu->clk_reg = devm_clk_get(&pdev->dev, "reg");
+	gpu->clk_reg = devm_clk_get_optional(&pdev->dev, "reg");
 	DBG("clk_reg: %p", gpu->clk_reg);
 	if (IS_ERR(gpu->clk_reg))
-		gpu->clk_reg = NULL;
+		return err;
 
-	gpu->clk_bus = devm_clk_get(&pdev->dev, "bus");
+	gpu->clk_bus = devm_clk_get_optional(&pdev->dev, "bus");
 	DBG("clk_bus: %p", gpu->clk_bus);
 	if (IS_ERR(gpu->clk_bus))
-		gpu->clk_bus = NULL;
+		return err;
 
-	gpu->clk_core = devm_clk_get(&pdev->dev, "core");
+	gpu->clk_core = devm_clk_get_optional(&pdev->dev, "core");
 	DBG("clk_core: %p", gpu->clk_core);
 	if (IS_ERR(gpu->clk_core))
-		gpu->clk_core = NULL;
+		return err;
 	gpu->base_rate_core = clk_get_rate(gpu->clk_core);
 
-	gpu->clk_shader = devm_clk_get(&pdev->dev, "shader");
+	gpu->clk_shader = devm_clk_get_optional(&pdev->dev, "shader");
 	DBG("clk_shader: %p", gpu->clk_shader);
 	if (IS_ERR(gpu->clk_shader))
-		gpu->clk_shader = NULL;
+		return err;
 	gpu->base_rate_shader = clk_get_rate(gpu->clk_shader);
 
 	/* TODO: figure out max mapped size */
-- 
2.26.2

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  parent reply	other threads:[~2020-05-15  6:53 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <[PATCH 0/3] drm/etnaviv: Clock fixes>
     [not found] ` <20200513150007.1315395-1-lkundrak@v3.sk>
2020-05-13 15:00   ` [PATCH 1/3] drm/etnaviv: Fix error path on failure to enable bus clk Lubomir Rintel
2020-05-13 15:00   ` Lubomir Rintel [this message]
2020-05-13 16:07     ` [PATCH 2/3] drm/etnaviv: Don't ignore errors on getting clocks Fabio Estevam
2020-05-13 17:09     ` Fabio Estevam
2020-05-14  2:41       ` Fabio Estevam
2020-05-14  8:18         ` Lucas Stach
2020-05-14  8:27           ` Russell King - ARM Linux admin
2020-05-14  8:40             ` Lucas Stach
2020-05-14  8:53               ` Russell King - ARM Linux admin
2020-05-20 13:38                 ` Lubomir Rintel
2020-05-20 14:04                   ` Lucas Stach
2020-05-20 15:00                     ` Russell King - ARM Linux admin
2020-05-23 10:22                     ` Lubomir Rintel
2020-05-13 15:00   ` [PATCH 3/3] drm/etnaviv: Simplify clock enable/disable Lubomir Rintel

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