wifi: ath12k: fix scan command endianness on big endian

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ath12k_wmi_scan_req_arg stores scan parameters in CPU-native byte order,
while ath12k_wmi_send_scan_start_cmd() writes them into a WMI command
buffer whose contents must be in little-endian format. The existing code
copies the channel list and writes s_ssid and hint_bssid related values to
the command buffer without endian conversion. As a result, scan requests
contain invalid parameters on big-endian systems and fail.

Convert the channel list as well as the s_ssid and hint_bssid related
values to little-endian before writing them to the WMI command buffer. This
preserves the existing behaviour on little-endian systems while fixing scan
requests on big-endian architectures.

Signed-off-by: Alexander Wilhelm <alexander.wilhelm@westermo.com>
Reviewed-by: Rameshkumar Sundaram <rameshkumar.sundaram@oss.qualcomm.com>
Reviewed-by: Baochen Qiang <baochen.qiang@oss.qualcomm.com>
Link: https://patch.msgid.link/20260703-fix-channel-list-copy-v2-1-372c39306d79@westermo.com
Signed-off-by: Jeff Johnson <jeff.johnson@oss.qualcomm.com>

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Alexander Wilhelm 2026-07-03 09:35:38 +02:00 • committed by Jeff Johnson

parent 6fe2dddf59

commit 6c90f68f97

2 changed files with 22 additions and 8 deletions

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20

drivers/net/wireless/ath/ath12k/wmi.c

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10

drivers/net/wireless/ath/ath12k/wmi.h

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