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