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at86rf230: fix __at86rf230_read_subreg function 

The __at86rf230_read_subreg function don't mask and shift register
contents which it should do. This patch adds the necessary masks and
shift operations in this function.

Since we have csma support this can make some trouble on state changes.
Since CSMA support turned on some bits in the TRX_STATUS register that
used to be zero, not masking broke checking of the TRX_STATUS field
after commanding a state change.

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Reviewed-by: Werner Almesberger <werner@almesberger.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Alexander Aring 2014-04-14 18:48:02 +02:00 committed by David S. Miller
parent bb78864a0c
commit 2168746cfc
1 changed files with 1 additions and 1 deletions
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2
drivers/net/ieee802154/at86rf230.c
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@ -365,7 +365,7 @@ __at86rf230_read_subreg(struct at86rf230_local *lp,
dev_vdbg(&lp->spi->dev, "buf[1] = %02x\n", buf[1]);
if (status == 0)
*data = buf[1];
*data = (buf[1] & mask) >> shift;
return status;
}