5.4-stable review patch. If anyone has any objections, please let me know.
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From: AngeloGioacchino Del Regno angelogioacchino.delregno@collabora.com
commit d6b82dafd17db0658f089b9cdec573982ca82bc5 upstream.
During probe, the TCPC alert interrupts are getting masked to avoid unwanted interrupts during chip setup: this is ok to do but there is no unmasking happening at any later time, which means that the chip will not raise any interrupt, essentially making it not functional as, while internally it does perform all of the intended functions, it won't signal anything to the outside.
Unmask the alert interrupts to fix functionality.
Fixes: ce08eaeb6388 ("staging: typec: rt1711h typec chip driver") Cc: stable stable@kernel.org Signed-off-by: AngeloGioacchino Del Regno angelogioacchino.delregno@collabora.com Link: https://lore.kernel.org/r/20250219114700.41700-1-angelogioacchino.delregno@c... Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/usb/typec/tcpm/tcpci_rt1711h.c | 11 +++++++++++ 1 file changed, 11 insertions(+)
--- a/drivers/usb/typec/tcpm/tcpci_rt1711h.c +++ b/drivers/usb/typec/tcpm/tcpci_rt1711h.c @@ -217,6 +217,11 @@ static int rt1711h_probe(struct i2c_clie { int ret; struct rt1711h_chip *chip; + const u16 alert_mask = TCPC_ALERT_TX_SUCCESS | TCPC_ALERT_TX_DISCARDED | + TCPC_ALERT_TX_FAILED | TCPC_ALERT_RX_HARD_RST | + TCPC_ALERT_RX_STATUS | TCPC_ALERT_POWER_STATUS | + TCPC_ALERT_CC_STATUS | TCPC_ALERT_RX_BUF_OVF | + TCPC_ALERT_FAULT;
ret = rt1711h_check_revision(client); if (ret < 0) { @@ -258,6 +263,12 @@ static int rt1711h_probe(struct i2c_clie dev_name(chip->dev), chip); if (ret < 0) return ret; + + /* Enable alert interrupts */ + ret = rt1711h_write16(chip, TCPC_ALERT_MASK, alert_mask); + if (ret < 0) + return ret; + enable_irq_wake(client->irq);
return 0;