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drm/tegra: sor: Provide error messages in probe

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When probing the SOR device fails, output proper error messages to help
diagnose the cause of the failure.

Signed-off-by: Thierry Reding <treding@nvidia.com>
This commit is contained in:
Thierry Reding 2015-04-27 15:04:26 +02:00
parent a9a9e4fd7c
commit 4dbdc740c4
1 changed files with 23 additions and 6 deletions
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29
drivers/gpu/drm/tegra/sor.c
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@ -1599,8 +1599,10 @@ static int tegra_sor_probe(struct platform_device *pdev)
}
err = tegra_output_probe(&sor->output);
if (err < 0)
if (err < 0) {
dev_err(&pdev->dev, "failed to probe output: %d\n", err);
return err;
}
regs = platform_get_resource(pdev, IORESOURCE_MEM, 0);
sor->regs = devm_ioremap_resource(&pdev->dev, regs);
@ -1608,24 +1610,39 @@ static int tegra_sor_probe(struct platform_device *pdev)
return PTR_ERR(sor->regs);
sor->rst = devm_reset_control_get(&pdev->dev, "sor");
if (IS_ERR(sor->rst))
if (IS_ERR(sor->rst)) {
dev_err(&pdev->dev, "failed to get reset control: %ld\n",
PTR_ERR(sor->rst));
return PTR_ERR(sor->rst);
}
sor->clk = devm_clk_get(&pdev->dev, NULL);
if (IS_ERR(sor->clk))
if (IS_ERR(sor->clk)) {
dev_err(&pdev->dev, "failed to get module clock: %ld\n",
PTR_ERR(sor->clk));
return PTR_ERR(sor->clk);
}
sor->clk_parent = devm_clk_get(&pdev->dev, "parent");
if (IS_ERR(sor->clk_parent))
if (IS_ERR(sor->clk_parent)) {
dev_err(&pdev->dev, "failed to get parent clock: %ld\n",
PTR_ERR(sor->clk_parent));
return PTR_ERR(sor->clk_parent);
}
sor->clk_safe = devm_clk_get(&pdev->dev, "safe");
if (IS_ERR(sor->clk_safe))
if (IS_ERR(sor->clk_safe)) {
dev_err(&pdev->dev, "failed to get safe clock: %ld\n",
PTR_ERR(sor->clk_safe));
return PTR_ERR(sor->clk_safe);
}
sor->clk_dp = devm_clk_get(&pdev->dev, "dp");
if (IS_ERR(sor->clk_dp))
if (IS_ERR(sor->clk_dp)) {
dev_err(&pdev->dev, "failed to get DP clock: %ld\n",
PTR_ERR(sor->clk_dp));
return PTR_ERR(sor->clk_dp);
}
INIT_LIST_HEAD(&sor->client.list);
sor->client.ops = &sor_client_ops;