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Subject[PATCH 4.9 111/138] ath10k: ignore configuring the incorrect board_id
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4.9-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Ryan Hsu <ryanhsu@qca.qualcomm.com>


[ Upstream commit d2e202c06ca42d353d95df12437740921a6d05b5 ]

With command to get board_id from otp, in the case of following

boot get otp board id result 0x00000000 board_id 0 chip_id 0
boot using board name 'bus=pci,bmi-chip-id=0,bmi-board-id=0"
...
failed to fetch board data for bus=pci,bmi-chip-id=0,bmi-board-id=0 from
ath10k/QCA6174/hw3.0/board-2.bin

The invalid board_id=0 will be used as index to search in the board-2.bin.

Ignore the case with board_id=0, as it means the otp is not carrying
the board id information.

Signed-off-by: Ryan Hsu <ryanhsu@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/net/wireless/ath/ath10k/core.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)

--- a/drivers/net/wireless/ath/ath10k/core.c
+++ b/drivers/net/wireless/ath/ath10k/core.c
@@ -691,8 +691,11 @@ static int ath10k_core_get_board_id_from
"boot get otp board id result 0x%08x board_id %d chip_id %d\n",
result, board_id, chip_id);

- if ((result & ATH10K_BMI_BOARD_ID_STATUS_MASK) != 0)
+ if ((result & ATH10K_BMI_BOARD_ID_STATUS_MASK) != 0 ||
+ (board_id == 0)) {
+ ath10k_warn(ar, "board id is not exist in otp, ignore it\n");
return -EOPNOTSUPP;
+ }

ar->id.bmi_ids_valid = true;
ar->id.bmi_board_id = board_id;

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