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drivers: cc2520: Inform about missing SPI device

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Refactor code to exit earlier in case of error.

Change-Id: I9ff893f923ff877d69b0e985bb6e4159504e67cd
Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
This commit is contained in:
Andrei Emeltchenko 2016-11-23 11:48:08 +02:00 committed by Jukka Rissanen
parent 0b8e5f3729
commit 4abf1a26f6
1 changed files with 11 additions and 8 deletions
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19
drivers/ieee802154/ieee802154_cc2520.c
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@ -1016,15 +1016,18 @@ static inline int configure_spi(struct device *dev)
};
cc2520->spi.dev = device_get_binding(CONFIG_TI_CC2520_SPI_DRV_NAME);
if (cc2520->spi.dev) {
cc2520->spi.slave = CONFIG_TI_CC2520_SPI_SLAVE;
if (!cc2520->spi.dev) {
SYS_LOG_ERR("Unable to get SPI device\n");
return -ENODEV;
}
if (spi_configure(cc2520->spi.dev, &spi_conf) != 0 ||
spi_slave_select(cc2520->spi.dev,
cc2520->spi.slave) != 0) {
cc2520->spi.dev = NULL;
return -EIO;
}
cc2520->spi.slave = CONFIG_TI_CC2520_SPI_SLAVE;
if (spi_configure(cc2520->spi.dev, &spi_conf) != 0 ||
spi_slave_select(cc2520->spi.dev,
cc2520->spi.slave) != 0) {
cc2520->spi.dev = NULL;
return -EIO;
}
return 0;