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@@ -860,6 +860,9 @@ static int mvtwsi_i2c_xfer(struct udevice *bus, struct i2c_msg *msg, int nmsgs)
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{
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struct mvtwsi_i2c_dev *dev = dev_get_priv(bus);
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struct i2c_msg *dmsg, *omsg, dummy;
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+ u8 *addr_buf_ptr;
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+ u8 addr_buf[4];
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+ int i;
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memset(&dummy, 0, sizeof(struct i2c_msg));
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@@ -873,12 +876,17 @@ static int mvtwsi_i2c_xfer(struct udevice *bus, struct i2c_msg *msg, int nmsgs)
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omsg = nmsgs == 1 ? &dummy : msg;
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dmsg = nmsgs == 1 ? msg : msg + 1;
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+ /* We need to swap the register address if its size is > 1 */
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+ addr_buf_ptr = &addr_buf[0];
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+ for (i = omsg->len; i > 0; i--)
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+ *addr_buf_ptr++ = omsg->buf[i - 1];
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+
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if (dmsg->flags & I2C_M_RD)
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- return __twsi_i2c_read(dev->base, dmsg->addr, omsg->buf,
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+ return __twsi_i2c_read(dev->base, dmsg->addr, addr_buf,
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omsg->len, dmsg->buf, dmsg->len,
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dev->tick);
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else
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- return __twsi_i2c_write(dev->base, dmsg->addr, omsg->buf,
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+ return __twsi_i2c_write(dev->base, dmsg->addr, addr_buf,
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omsg->len, dmsg->buf, dmsg->len,
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dev->tick);
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}
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