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SRAM driver often returns -EPROBE_DEFER and thus this bus driver often prints error message, even if it probes successfully later. This is confusing for users and they often think that something is wrong. Use dev_err_probe() helper for printing error message. It handles -EPROBE_DEFER automatically. Signed-off-by: Jernej Skrabec <jernej.skrabec@gmail.com> Reviewed-by: Andre Przywara <andre.przywara@arm.com> Signed-off-by: Maxime Ripard <maxime@cerno.tech> Link: https://lore.kernel.org/r/20211010071812.145178-1-jernej.skrabec@gmail.com
47 lines
1.1 KiB
C
47 lines
1.1 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Allwinner A64 Display Engine 2.0 Bus Driver
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*
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* Copyright (C) 2018 Icenowy Zheng <icenowy@aosc.io>
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*/
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#include <linux/of_platform.h>
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#include <linux/platform_device.h>
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#include <linux/soc/sunxi/sunxi_sram.h>
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static int sun50i_de2_bus_probe(struct platform_device *pdev)
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{
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struct device_node *np = pdev->dev.of_node;
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int ret;
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ret = sunxi_sram_claim(&pdev->dev);
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if (ret)
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return dev_err_probe(&pdev->dev, ret,
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"Couldn't map SRAM to device\n");
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of_platform_populate(np, NULL, NULL, &pdev->dev);
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return 0;
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}
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static int sun50i_de2_bus_remove(struct platform_device *pdev)
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{
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sunxi_sram_release(&pdev->dev);
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return 0;
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}
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static const struct of_device_id sun50i_de2_bus_of_match[] = {
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{ .compatible = "allwinner,sun50i-a64-de2", },
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{ /* sentinel */ }
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};
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static struct platform_driver sun50i_de2_bus_driver = {
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.probe = sun50i_de2_bus_probe,
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.remove = sun50i_de2_bus_remove,
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.driver = {
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.name = "sun50i-de2-bus",
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.of_match_table = sun50i_de2_bus_of_match,
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},
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};
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builtin_platform_driver(sun50i_de2_bus_driver);
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