Commit 6e03f3ff authored by Stefan Wahren's avatar Stefan Wahren Committed by David S. Miller
Browse files

net: qca_spi: Avoid re-sync for single signature error 



Setting a new network key would cause a reset of the QCA7000. Usually
the driver only notice the SPI interrupt and a single signature error.
So avoid the whole re-sync process (possible packet loss, transmit queue
stop and no carrier for at least 1 second) in this case.

Signed-off-by: default avatarStefan Wahren <stefan.wahren@i2se.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent b76078df

drivers/net/ethernet/qualcomm/qca_spi.c

+4 −1
Original line number Diff line number Diff line
@@ -524,8 +524,11 @@ qcaspi_qca7k_sync(struct qcaspi *qca, int event) 


	switch (qca->sync) {

	case QCASPI_SYNC_READY:

		/* Read signature, if not valid go to unknown state. */

		/* Check signature twice, if not valid go to unknown state. */

		qcaspi_read_register(qca, SPI_REG_SIGNATURE, &signature);

		if (signature != QCASPI_GOOD_SIGNATURE)

			qcaspi_read_register(qca, SPI_REG_SIGNATURE, &signature);



		if (signature != QCASPI_GOOD_SIGNATURE) {

			qca->sync = QCASPI_SYNC_UNKNOWN;

			netdev_dbg(qca->net_dev, "sync: bad signature, restart\n");