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net: qca_spi: Introduce stat about bad signature
In order to identify significant signature issues add a new stat counter, which increases on bad signature values that causes a sync loss. Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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3 changed files with 6 additions and 0 deletions
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@ -62,6 +62,7 @@ static const char qcaspi_gstrings_stats[][ETH_GSTRING_LEN] = {
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"SPI errors",
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"Write verify errors",
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"Buffer available errors",
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"Bad signature",
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};
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#ifdef CONFIG_DEBUG_FS
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@ -504,6 +504,9 @@ qcaspi_qca7k_sync(struct qcaspi *qca, int event)
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qcaspi_read_register(qca, SPI_REG_SIGNATURE, &signature);
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qcaspi_read_register(qca, SPI_REG_SIGNATURE, &signature);
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if (signature != QCASPI_GOOD_SIGNATURE) {
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if (qca->sync == QCASPI_SYNC_READY)
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qca->stats.bad_signature++;
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qca->sync = QCASPI_SYNC_UNKNOWN;
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netdev_dbg(qca->net_dev, "sync: got CPU on, but signature was invalid, restart\n");
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return;
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@ -531,6 +534,7 @@ qcaspi_qca7k_sync(struct qcaspi *qca, int event)
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if (signature != QCASPI_GOOD_SIGNATURE) {
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qca->sync = QCASPI_SYNC_UNKNOWN;
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qca->stats.bad_signature++;
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netdev_dbg(qca->net_dev, "sync: bad signature, restart\n");
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/* don't reset right away */
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return;
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@ -75,6 +75,7 @@ struct qcaspi_stats {
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u64 spi_err;
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u64 write_verify_failed;
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u64 buf_avail_err;
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u64 bad_signature;
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};
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struct qcaspi {
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