From 81c53729ee7c7f721c357ed3b531ebc97ca44051 Mon Sep 17 00:00:00 2001 From: Eric Anholt Date: Wed, 15 Feb 2017 11:57:57 -0800 Subject: [PATCH] i2c-bcm2835: Debug test for curr_msg Signed-off-by: Eric Anholt --- drivers/i2c/busses/i2c-bcm2835.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/i2c/busses/i2c-bcm2835.c b/drivers/i2c/busses/i2c-bcm2835.c index c3436f627028..a75fab4dd660 100644 --- a/drivers/i2c/busses/i2c-bcm2835.c +++ b/drivers/i2c/busses/i2c-bcm2835.c @@ -195,7 +195,10 @@ static irqreturn_t bcm2835_i2c_isr(int this_irq, void *data) } if (val & BCM2835_I2C_S_DONE) { - if (i2c_dev->curr_msg->flags & I2C_M_RD) { + if (!i2c_dev->curr_msg) { + dev_info(i2c_dev->dev, + "Processing DONE interrupt with no msg\n"); + } else if (i2c_dev->curr_msg->flags & I2C_M_RD) { bcm2835_drain_rxfifo(i2c_dev); val = bcm2835_i2c_readl(i2c_dev, BCM2835_I2C_S); } -- 2.11.0