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A single EFI fix from Lukas: 

- handle boolean device properties imported from Apple firmware
   correctly.
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Merge tag 'efi-urgent-for-v5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull EFI fix from Borislav Petkov:
 "A single fix from Lukas: handle boolean device properties imported
  from Apple firmware correctly"

* tag 'efi-urgent-for-v5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  efi/apple-properties: Reinstate support for boolean properties
This commit is contained in:
Linus Torvalds 2021-01-31 11:57:37 -08:00
parent f5a376edde 355845b738
commit ac8c6edd20
1 changed files with 9 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

13
drivers/firmware/efi/apple-properties.c
View File

@ -3,8 +3,9 @@
* apple-properties.c - EFI device properties on Macs
* Copyright (C) 2016 Lukas Wunner <lukas@wunner.de>
*
* Note, all properties are considered as u8 arrays.
* To get a value of any of them the caller must use device_property_read_u8_array().
* Properties are stored either as:
* u8 arrays which can be retrieved with device_property_read_u8_array() or
* booleans which can be queried with device_property_present().
*/
#define pr_fmt(fmt) "apple-properties: " fmt
@ -88,8 +89,12 @@ static void __init unmarshal_key_value_pairs(struct dev_header *dev_header,
entry_data = ptr + key_len + sizeof(val_len);
entry_len = val_len - sizeof(val_len);
entry[i] = PROPERTY_ENTRY_U8_ARRAY_LEN(key, entry_data,
entry_len);
if (entry_len)
entry[i] = PROPERTY_ENTRY_U8_ARRAY_LEN(key, entry_data,
entry_len);
else
entry[i] = PROPERTY_ENTRY_BOOL(key);
if (dump_properties) {
dev_info(dev, "property: %s\n", key);
print_hex_dump(KERN_INFO, pr_fmt(), DUMP_PREFIX_OFFSET,