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wifi: mt76: mt792x: fix firmware reload failure after previous load crash #1040

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wifi: mt76: mt792x: fix firmware reload failure after previous load crash #1040

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14 changes: 14 additions & 0 deletions mt792x_core.c
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Original file line number Diff line number Diff line change
Expand Up @@ -927,6 +927,20 @@ int mt792x_load_firmware(struct mt792x_dev *dev)
{
int ret;

/* Release semaphore if taken by previous failed load attempt.
* This prevents "Failed to get patch semaphore" errors when
* recovering from firmware crashes or suspend/resume failures.
*/
ret = mt76_connac_mcu_patch_sem_ctrl(&dev->mt76, false);
if (ret < 0)
dev_dbg(dev->mt76.dev, "Semaphore release returned %d (may be expected)\n", ret);

/* Always restart MCU to ensure clean state before loading firmware */
mt76_connac_mcu_restart(&dev->mt76);

/* Wait for MCU to be ready after restart */
msleep(100);

ret = mt76_connac2_load_patch(&dev->mt76, mt792x_patch_name(dev));
if (ret)
return ret;
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