6.6-stable review patch. If anyone has any objections, please let me know.
------------------
From: Ming Yen Hsieh <mingyen.hsieh@xxxxxxxxxxxx>
[ Upstream commit fa6ad88e023ddfa6c5dcdb466d159e89f451e305 ]
Due to the increase in the number of power tables for 6Ghz on CLC,
the variable nr_country is no longer sufficient to represent the
total quantity. Therefore, we have switched to calculating the
length of clc buf to obtain the correct power table. Additionally,
the version number has been incremented to 1.
Fixes: 23bdc5d8cadf ("wifi: mt76: mt7921: introduce Country Location Control support")
Signed-off-by: Ming Yen Hsieh <mingyen.hsieh@xxxxxxxxxxxx>
Signed-off-by: Felix Fietkau <nbd@xxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/net/wireless/mediatek/mt76/mt7921/mcu.c | 11 ++++++++---
1 file changed, 8 insertions(+), 3 deletions(-)
diff --git a/drivers/net/wireless/mediatek/mt76/mt7921/mcu.c b/drivers/net/wireless/mediatek/mt76/mt7921/mcu.c
index 90c93970acab..d1b1b8f767fc 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7921/mcu.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7921/mcu.c
@@ -1136,22 +1136,27 @@ int __mt7921_mcu_set_clc(struct mt792x_dev *dev, u8 *alpha2,
u8 type[2];
u8 rsvd[64];
} __packed req = {
+ .ver = 1,
.idx = idx,
.env = env_cap,
.acpi_conf = mt792x_acpi_get_flags(&dev->phy),
};
int ret, valid_cnt = 0;
- u8 i, *pos;
+ u16 buf_len = 0;
+ u8 *pos;
if (!clc)
return 0;
+ buf_len = le16_to_cpu(clc->len) - sizeof(*clc);
pos = clc->data;
- for (i = 0; i < clc->nr_country; i++) {
+ while (buf_len > 16) {
struct mt7921_clc_rule *rule = (struct mt7921_clc_rule *)pos;
u16 len = le16_to_cpu(rule->len);
+ u16 offset = len + sizeof(*rule);
- pos += len + sizeof(*rule);
+ pos += offset;
+ buf_len -= offset;
if (rule->alpha2[0] != alpha2[0] ||
rule->alpha2[1] != alpha2[1])
continue;
--
2.43.0
