gitops/mt76
1
0
Fork 0
mirror of https://github.com/outbackdingo/mt76.git synced 2026-10-24 13:26:48 +00:00
Code Issues Packages Projects Releases Wiki Activity

wifi: mt76: mt7915: mcu: re-init MCU before loading FW patch

Browse Source 
Restart the MCU and release the patch semaphore before loading the MCU
patch firmware from the host.

This fixes failures upon error recovery in case the semaphore was
previously taken and never released by the host.

This happens from time to time upon triggering a full-chip error
recovery. Under this circumstance, the hardware restart fails and the
radio is rendered inoperational.

Signed-off-by: David Bauer <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Felix Fietkau <[email protected]>
This commit is contained in:
David Bauer
2025-06-01 22:03:37 +02:00
committed by Felix Fietkau
parent 0534761b76
commit 79dd14f2e8
1 changed files with 15 additions and 10 deletions
Download Patch File Download Diff File Expand all files Collapse all files
mt7915/mcu.c
+15 -10
View File
@@ -2115,16 +2115,21 @@ static int mt7915_load_firmware(struct mt7915_dev *dev)
{
int ret;
/* make sure fw is download state */
if (mt7915_firmware_state(dev, false)) {
/* restart firmware once */
mt76_connac_mcu_restart(&dev->mt76);
ret = mt7915_firmware_state(dev, false);
if (ret) {
dev_err(dev->mt76.dev,
"Firmware is not ready for download\n");
return ret;
}
/* Release Semaphore if taken by previous failed attempt */
ret = mt76_connac_mcu_patch_sem_ctrl(&dev->mt76, false);
if (ret != PATCH_REL_SEM_SUCCESS) {
dev_err(dev->mt76.dev, "Could not release semaphore\n");
/* Continue anyways */
}
/* Always restart MCU firmware */
mt76_connac_mcu_restart(&dev->mt76);
/* Check if MCU is ready */
ret = mt7915_firmware_state(dev, false);
if (ret) {
dev_err(dev->mt76.dev, "Firmware did not enter download state\n");
return ret;
}
ret = mt76_connac2_load_patch(&dev->mt76, fw_name_var(dev, ROM_PATCH));