From: Sean Wang <objelf@xxxxxxxxx>
Just follow up vendor driver to retry a few times obtaining patch
semaphore when the event is PATCH_NOT_DL_SEM_FAIL. That usually
happens in Bluetooth and Wifi driver contends to download patch
simultaneously.
Co-developed-by: YN Chen <YN.Chen@xxxxxxxxxxxx>
Signed-off-by: YN Chen <YN.Chen@xxxxxxxxxxxx>
Signed-off-by: Sean Wang <sean.wang@xxxxxxxxxxxx>
---
drivers/net/wireless/mediatek/mt76/mt7615/mcu.c | 9 ++++++++-
1 file changed, 8 insertions(+), 1 deletion(-)
diff --git a/drivers/net/wireless/mediatek/mt76/mt7615/mcu.c b/drivers/net/wireless/mediatek/mt76/mt7615/mcu.c
index 2b17bd1c2a32..c990ccd6f472 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7615/mcu.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7615/mcu.c
@@ -1945,14 +1945,21 @@ static int mt7615_load_patch(struct mt7615_dev *dev, u32 addr, const char *name)
{
const struct mt7615_patch_hdr *hdr;
const struct firmware *fw = NULL;
- int len, ret, sem;
+ int len, ret, sem, c = 50;
+retry:
sem = mt7615_mcu_patch_sem_ctrl(dev, 1);
switch (sem) {
case PATCH_IS_DL:
return 0;
case PATCH_NOT_DL_SEM_SUCCESS:
break;
+ case PATCH_NOT_DL_SEM_FAIL:
+ if (is_mt7663(&dev->mt76) && c--) {
+ msleep(100);
+ goto retry;
+ }
+ fallthrough;
default:
dev_err(dev->mt76.dev, "Failed to get patch semaphore\n");
return -EAGAIN;
--
2.25.1
