at86rf230: remove unnecessary state read

This patch removes a unnecessary state read. The status value is never
evaluate after reading the state.

Also rename the status variable to dvdd, because this variable will be
used later.

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ieee802154/at86rf230.c b/drivers/net/ieee802154/at86rf230.c
index 67c01bf..1331152 100644 (file)
--- a/drivers/net/ieee802154/at86rf230.c
+++ b/drivers/net/ieee802154/at86rf230.c
@@ -969,13 +969,9 @@ static int at86rf230_irq_polarity(struct at86rf230_local *lp, int pol)
 static int at86rf230_hw_init(struct at86rf230_local *lp)
 {
        int rc, irq_pol, irq_type;
-       u8 status;
+       u8 dvdd;
        u8 csma_seed[2];
 
-       rc = at86rf230_read_subreg(lp, SR_TRX_STATUS, &status);
-       if (rc)
-               return rc;
-
        rc = at86rf230_write_subreg(lp, SR_TRX_CMD, STATE_FORCE_TRX_OFF);
        if (rc)
                return rc;
@@ -1015,10 +1011,10 @@ static int at86rf230_hw_init(struct at86rf230_local *lp)
        /* Wait the next SLEEP cycle */
        msleep(100);
 
-       rc = at86rf230_read_subreg(lp, SR_DVDD_OK, &status);
+       rc = at86rf230_read_subreg(lp, SR_DVDD_OK, &dvdd);
        if (rc)
                return rc;
-       if (!status) {
+       if (!dvdd) {
                dev_err(&lp->spi->dev, "DVDD error\n");
                return -EINVAL;
        }