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-rw-r--r--drivers/i2c/busses/i2c-omap.c8
1 files changed, 7 insertions, 1 deletions
diff --git a/drivers/i2c/busses/i2c-omap.c b/drivers/i2c/busses/i2c-omap.c
index 75bf3ad18099..a64a192c44a4 100644
--- a/drivers/i2c/busses/i2c-omap.c
+++ b/drivers/i2c/busses/i2c-omap.c
@@ -247,7 +247,13 @@ static void omap_i2c_unidle(struct omap_i2c_dev *dev)
omap_i2c_write_reg(dev, OMAP_I2C_CON_REG, OMAP_I2C_CON_EN);
}
dev->idle = 0;
- omap_i2c_write_reg(dev, OMAP_I2C_IE_REG, dev->iestate);
+
+ /*
+ * Don't write to this register if the IE state is 0 as it can
+ * cause deadlock.
+ */
+ if (dev->iestate)
+ omap_i2c_write_reg(dev, OMAP_I2C_IE_REG, dev->iestate);
}
static void omap_i2c_idle(struct omap_i2c_dev *dev)