firmware: dmi: handle missing DMI data gracefully
Currently, when booting a kernel with DMI support on a platform that has no DMI tables, the following output is emitted into the kernel log: [ 0.128818] DMI not present or invalid. ... [ 1.306659] dmi: Firmware registration failed. ... [ 2.908681] dmi-sysfs: dmi entry is absent. The first one is a pr_info(), but the subsequent ones are pr_err()s that complain about a condition that is not really an error to begin with. So let's clean this up, and give up silently if dma_available is not set. Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Acked-by: Martin Hundebøll <mnhu@prevas.dk> Signed-off-by: Jean Delvare <jdelvare@suse.de>
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@ -652,7 +652,7 @@ static int __init dmi_sysfs_init(void)
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int val;
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if (!dmi_kobj) {
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pr_err("dmi-sysfs: dmi entry is absent.\n");
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pr_debug("dmi-sysfs: dmi entry is absent.\n");
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error = -ENODATA;
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goto err;
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}
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@ -704,10 +704,8 @@ static int __init dmi_init(void)
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u8 *dmi_table;
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int ret = -ENOMEM;
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if (!dmi_available) {
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ret = -ENODATA;
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goto err;
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}
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if (!dmi_available)
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return 0;
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/*
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* Set up dmi directory at /sys/firmware/dmi. This entry should stay
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