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56 lines
2.0 KiB
Diff
56 lines
2.0 KiB
Diff
From 7107b9724f933acdb31a3cc87dc80ce7a7484bd5 Mon Sep 17 00:00:00 2001
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From: Hector Martin <marcan@marcan.st>
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Date: Thu, 23 Dec 2021 19:51:11 +0900
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Subject: [PATCH 096/171] ACPI / property: Support strings in Apple _DSM props
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The Wi-Fi module in Apple machines has a "module-instance" device
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property that specifies the platform type and is used for firmware
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selection. Its value is a string, so add support for string values in
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acpi_extract_apple_properties().
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Reviewed-by: Lukas Wunner <lukas@wunner.de>
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Acked-by: Linus Walleij <linus.walleij@linaro.org>
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Signed-off-by: Hector Martin <marcan@marcan.st>
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---
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drivers/acpi/x86/apple.c | 11 ++++++++++-
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1 file changed, 10 insertions(+), 1 deletion(-)
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diff --git a/drivers/acpi/x86/apple.c b/drivers/acpi/x86/apple.c
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index c285c91a5e9c..71b8f103ab0f 100644
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--- a/drivers/acpi/x86/apple.c
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+++ b/drivers/acpi/x86/apple.c
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@@ -70,13 +70,16 @@ void acpi_extract_apple_properties(struct acpi_device *adev)
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if ( key->type != ACPI_TYPE_STRING ||
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(val->type != ACPI_TYPE_INTEGER &&
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- val->type != ACPI_TYPE_BUFFER))
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+ val->type != ACPI_TYPE_BUFFER &&
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+ val->type != ACPI_TYPE_STRING))
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continue; /* skip invalid properties */
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__set_bit(i, valid);
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newsize += key->string.length + 1;
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if ( val->type == ACPI_TYPE_BUFFER)
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newsize += val->buffer.length;
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+ else if (val->type == ACPI_TYPE_STRING)
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+ newsize += val->string.length + 1;
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}
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numvalid = bitmap_weight(valid, numprops);
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@@ -118,6 +121,12 @@ void acpi_extract_apple_properties(struct acpi_device *adev)
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newprops[v].type = val->type;
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if (val->type == ACPI_TYPE_INTEGER) {
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newprops[v].integer.value = val->integer.value;
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+ } else if (val->type == ACPI_TYPE_STRING) {
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+ newprops[v].string.length = val->string.length;
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+ newprops[v].string.pointer = free_space;
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+ memcpy(free_space, val->string.pointer,
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+ val->string.length);
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+ free_space += val->string.length + 1;
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} else {
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newprops[v].buffer.length = val->buffer.length;
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newprops[v].buffer.pointer = free_space;
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--
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2.34.1
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