wcn36xx: Add ability for wcn36xx_smd_dump_cmd_req to pass two's complement

Qcom documents suggest passing of negative values to the dump command,
however currently we convert from string to u32 not s32, so we cannot pass
a two's complement value to the firmware in this way.

There is in fact only one parameter which takes a two's complement value
<tigger threshold> in the antenna diversity switch command.

Downstream:
iwpriv wlan0 dump 71 3 <schedule period> <trigger threshold> <hysteresis value>

Upstream:
echo "71 3 <schedule period> <trigger threshold> <hysteresis value>" > /sys/kernel/debug/ieee80211/phy0/wcn36xx/dump

Fixes: 8e84c2582169 ("wcn36xx: mac80211 driver for Qualcomm WCN3660/WCN3680 hardware")
Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Reviewed-by: Loic Poulain <loic.poulain@linaro.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20210909144428.2564650-3-bryan.odonoghue@linaro.org

diff --git a/drivers/net/wireless/ath/wcn36xx/debug.c b/drivers/net/wireless/ath/wcn36xx/debug.c
index 389b5e7129a6dbebbb6225a7baee2cd9ec0c4ca3..6af306ae41ad9b6ee95c00c483417bc165ae23f7 100644 (file)
--- a/drivers/net/wireless/ath/wcn36xx/debug.c
+++ b/drivers/net/wireless/ath/wcn36xx/debug.c
@@ -120,7 +120,7 @@ static ssize_t write_file_dump(struct file *file,
                if (begin == NULL)
                        break;
 
-               if (kstrtou32(begin, 0, &arg[i]) != 0)
+               if (kstrtos32(begin, 0, &arg[i]) != 0)
                        break;
        }