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usb: typec: tcpci_rt1711h: Unmask alert interrupts to fix functionality

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commit d6b82dafd1 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: ce08eaeb63 ("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@collabora.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
AngeloGioacchino Del Regno
2025-02-19 12:47:00 +01:00
committed by Greg Kroah-Hartman
parent 8233c63fca
commit 68f7ef440a
1 changed files with 11 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files
drivers/usb/typec/tcpm/tcpci_rt1711h.c
+11
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@@ -331,6 +331,11 @@ static int rt1711h_probe(struct i2c_client *client)
{
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;
chip = devm_kzalloc(&client->dev, sizeof(*chip), GFP_KERNEL);
if (!chip)
@@ -379,6 +384,12 @@ static int rt1711h_probe(struct i2c_client *client)
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;