linux-kernel - [PATCH 3/5] usb: gadget: udc: lpc32xx: properly setup phy interrupts

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Date:   Tue,  9 Apr 2019 14:09:06 +0200
From:   Alexandre Belloni <alexandre.belloni@...tlin.com>
To:     Felipe Balbi <balbi@...nel.org>, Vladimir Zapolskiy <vz@...ia.com>
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Sylvain Lemieux <slemieux.tyco@...il.com>,
        linux-usb@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org,
        Alexandre Belloni <alexandre.belloni@...tlin.com>
Subject: [PATCH 3/5] usb: gadget: udc: lpc32xx: properly setup phy interrupts

Only INT_VBUS_VLD is set to generate ATX interrupts on the phy but
INT_SESS_VLD is checked in vbus_work. This leads to cases where
hot-plugging USB doesn't work after boot.

Signed-off-by: Alexandre Belloni <alexandre.belloni@...tlin.com>
---
 drivers/usb/gadget/udc/lpc32xx_udc.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/usb/gadget/udc/lpc32xx_udc.c b/drivers/usb/gadget/udc/lpc32xx_udc.c
index 777279fa4637..12f2d76e50fe 100644
--- a/drivers/usb/gadget/udc/lpc32xx_udc.c
+++ b/drivers/usb/gadget/udc/lpc32xx_udc.c
@@ -604,11 +604,11 @@ static void isp1301_udc_configure(struct lpc32xx_udc *udc)
 	i2c_smbus_write_byte_data(udc->isp1301_i2c_client,
 		ISP1301_I2C_INTERRUPT_FALLING | ISP1301_I2C_REG_CLEAR_ADDR, ~0);
 	i2c_smbus_write_byte_data(udc->isp1301_i2c_client,
-		ISP1301_I2C_INTERRUPT_FALLING, INT_VBUS_VLD);
+		ISP1301_I2C_INTERRUPT_FALLING, INT_SESS_VLD | INT_VBUS_VLD);
 	i2c_smbus_write_byte_data(udc->isp1301_i2c_client,
 		ISP1301_I2C_INTERRUPT_RISING | ISP1301_I2C_REG_CLEAR_ADDR, ~0);
 	i2c_smbus_write_byte_data(udc->isp1301_i2c_client,
-		ISP1301_I2C_INTERRUPT_RISING, INT_VBUS_VLD);
+		ISP1301_I2C_INTERRUPT_RISING, INT_SESS_VLD | INT_VBUS_VLD);
 
 	dev_info(udc->dev, "ISP1301 Vendor ID  : 0x%04x\n",
 		 i2c_smbus_read_word_data(udc->isp1301_i2c_client, 0x00));
-- 
2.20.1