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at86rf230: remove unnecessary state read

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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>
This commit is contained in:
Alexander Aring 2014-04-24 19:09:17 +02:00 committed by David S. Miller
parent 57e48ffce9
commit 1cc9fc53b3
1 changed files with 3 additions and 7 deletions
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10
drivers/net/ieee802154/at86rf230.c
View file

@ -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;
}