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Armin Wolf 7625992f16 platform/x86: dell-smbios: Fix wrong token data in sysfs 
[ Upstream commit 1981b296f8 ]

When reading token data from sysfs on my Inspiron 3505, the token
locations and values are wrong. This happens because match_attribute()
blindly assumes that all entries in da_tokens have an associated
entry in token_attrs.

This however is not true as soon as da_tokens[] contains zeroed
token entries. Those entries are being skipped when initialising
token_attrs, breaking the core assumption of match_attribute().

Fix this by defining an extra struct for each pair of token attributes
and use container_of() to retrieve token information.

Tested on a Dell Inspiron 3050.

Fixes: 33b9ca1e53 ("platform/x86: dell-smbios: Add a sysfs interface for SMBIOS tokens")
Signed-off-by: Armin Wolf <W_Armin@gmx.de>
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Link: https://lore.kernel.org/r/20240528204903.445546-1-W_Armin@gmx.de
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
History 2024-07-05 09:14:16 +02:00
..
chrome platform/chrome: cros_ec_chardev: fix kernel data leak from ioctl 2023-03-30 12:47:50 +02:00
goldfish platform/goldfish: Convert pipe tasklet to threaded irq 2021-01-27 14:57:06 +01:00
mellanox platform/mellanox: Check devm_hwmon_device_register_with_groups() return value 2023-12-13 18:36:35 +01:00
mips MIPS: Loongson-3: fix compile mips cpu_hwmon as module build error. 2022-06-22 14:21:58 +02:00
olpc platform/olpc: Fix uninitialized data in debugfs write 2022-08-17 14:23:58 +02:00
surface platform/surface: aggregator: fix recv_buf() return value 2023-12-13 18:36:44 +01:00
x86 platform/x86: dell-smbios: Fix wrong token data in sysfs 2024-07-05 09:14:16 +02:00
Kconfig platform: Add Surface platform directory 2020-10-27 12:51:03 +01:00
Makefile platform: Add Surface platform directory 2020-10-27 12:51:03 +01:00