wifi: ath12k: Fix index decrement when array_len is zero

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[ Upstream commit e4763898bb ]

Currently, print_array_to_buf_index() decrements index unconditionally.
This may lead to invalid buffer access when array_len is zero.

Fix this by decrementing index only when array_len is non-zero.

Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.5-01651-QCAHKSWPL_SILICONZ-1
Tested-on: WCN7850 hw2.0 PCI WLAN.HMT.1.1.c5-00302-QCAHMTSWPL_V1.0_V2.0_SILICONZ-1.115823.3

Fixes: adf6df963c ("wifi: ath12k: Add support to parse requested stats_type")
Signed-off-by: Aaradhana Sahu <aaradhana.sahu@oss.qualcomm.com>
Reviewed-by: Baochen Qiang <baochen.qiang@oss.qualcomm.com>
Link: https://patch.msgid.link/20260123071253.2202644-2-aaradhana.sahu@oss.qualcomm.com
Signed-off-by: Jeff Johnson <jeff.johnson@oss.qualcomm.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

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Aaradhana Sahu 2026-01-23 12:42:51 +05:30 • committed by Greg Kroah-Hartman

parent 0e0ca8dbfe

commit 474e93f4a5

1 changed files with 5 additions and 3 deletions

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

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