5.4-stable review patch. If anyone has any objections, please let me know.
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From: Arnd Bergmann arnd@arndb.de
[ Upstream commit 424c82e8ad56756bb98b08268ffcf68d12d183eb ]
The iwl_fw_ini_error_dump_range structure has conflicting alignment requirements for the inner union and the outer struct:
In file included from drivers/net/wireless/intel/iwlwifi/fw/dbg.c:9: drivers/net/wireless/intel/iwlwifi/fw/error-dump.h:312:2: error: field within 'struct iwl_fw_ini_error_dump_range' is less aligned than 'union iwl_fw_ini_error_dump_range::(anonymous at drivers/net/wireless/intel/iwlwifi/fw/error-dump.h:312:2)' and is usually due to 'struct iwl_fw_ini_error_dump_range' being packed, which can lead to unaligned accesses [-Werror,-Wunaligned-access] union {
As the original intention was apparently to make the entire structure unaligned, mark the innermost members the same way so the union becomes packed as well.
Fixes: 973193554cae6 ("iwlwifi: dbg_ini: dump headers cleanup") Signed-off-by: Arnd Bergmann arnd@arndb.de Acked-by: Gregory Greenman gregory.greenman@intel.com Link: https://lore.kernel.org/r/20230616090343.2454061-1-arnd@kernel.org Signed-off-by: Johannes Berg johannes.berg@intel.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/net/wireless/intel/iwlwifi/fw/error-dump.h | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/drivers/net/wireless/intel/iwlwifi/fw/error-dump.h b/drivers/net/wireless/intel/iwlwifi/fw/error-dump.h index 2e763678dbdb8..36bfc195a7722 100644 --- a/drivers/net/wireless/intel/iwlwifi/fw/error-dump.h +++ b/drivers/net/wireless/intel/iwlwifi/fw/error-dump.h @@ -332,9 +332,9 @@ struct iwl_fw_ini_fifo_hdr { struct iwl_fw_ini_error_dump_range { __le32 range_data_size; union { - __le32 internal_base_addr; - __le64 dram_base_addr; - __le32 page_num; + __le32 internal_base_addr __packed; + __le64 dram_base_addr __packed; + __le32 page_num __packed; struct iwl_fw_ini_fifo_hdr fifo_hdr; }; __le32 data[];