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author | 2019-01-10 11:41:59 -0800 | |
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committer | 2019-01-10 11:41:59 -0800 | |
commit | 49e41801b335f64610bbfd23e8f2bbaf34d46276 (patch) | |
tree | 4fbedacd1de1bbd4054f07f93031aebcb7b7a919 /drivers/net/ethernet/qualcomm/qca_spi.c | |
parent | security: integrity: partial revert of make ima_main explicitly non-modular (diff) | |
parent | Linux 5.0-rc1 (diff) | |
download | linux-dev-49e41801b335f64610bbfd23e8f2bbaf34d46276.tar.xz linux-dev-49e41801b335f64610bbfd23e8f2bbaf34d46276.zip |
Merge tag 'v5.0-rc1' into next-general
Linux 5.0-rc1
Sync to pick up LSM stacking work (which is based on -rc1).
Diffstat (limited to 'drivers/net/ethernet/qualcomm/qca_spi.c')
-rw-r--r-- | drivers/net/ethernet/qualcomm/qca_spi.c | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/drivers/net/ethernet/qualcomm/qca_spi.c b/drivers/net/ethernet/qualcomm/qca_spi.c index d5310504f436..97f92953bdb9 100644 --- a/drivers/net/ethernet/qualcomm/qca_spi.c +++ b/drivers/net/ethernet/qualcomm/qca_spi.c @@ -289,6 +289,14 @@ qcaspi_transmit(struct qcaspi *qca) qcaspi_read_register(qca, SPI_REG_WRBUF_SPC_AVA, &available); + if (available > QCASPI_HW_BUF_LEN) { + /* This could only happen by interferences on the SPI line. + * So retry later ... + */ + qca->stats.buf_avail_err++; + return -1; + } + while (qca->txr.skb[qca->txr.head]) { pkt_len = qca->txr.skb[qca->txr.head]->len + QCASPI_HW_PKT_LEN; @@ -355,7 +363,13 @@ qcaspi_receive(struct qcaspi *qca) netdev_dbg(net_dev, "qcaspi_receive: SPI_REG_RDBUF_BYTE_AVA: Value: %08x\n", available); - if (available == 0) { + if (available > QCASPI_HW_BUF_LEN) { + /* This could only happen by interferences on the SPI line. + * So retry later ... + */ + qca->stats.buf_avail_err++; + return -1; + } else if (available == 0) { netdev_dbg(net_dev, "qcaspi_receive called without any data being available!\n"); return -1; } |