diff options
Diffstat (limited to 'drivers/i2c')
| -rw-r--r-- | drivers/i2c/busses/i2c-designware-slave.c | 2 | ||||
| -rw-r--r-- | drivers/i2c/busses/i2c-k1.c | 2 | ||||
| -rw-r--r-- | drivers/i2c/busses/i2c-npcm7xx.c | 12 | ||||
| -rw-r--r-- | drivers/i2c/busses/i2c-pasemi-core.c | 2 | ||||
| -rw-r--r-- | drivers/i2c/busses/i2c-tegra.c | 5 |
5 files changed, 16 insertions, 7 deletions
diff --git a/drivers/i2c/busses/i2c-designware-slave.c b/drivers/i2c/busses/i2c-designware-slave.c index 5cd4a5f7a472..b936a240db0a 100644 --- a/drivers/i2c/busses/i2c-designware-slave.c +++ b/drivers/i2c/busses/i2c-designware-slave.c @@ -96,7 +96,7 @@ static int i2c_dw_unreg_slave(struct i2c_client *slave) i2c_dw_disable(dev); synchronize_irq(dev->irq); dev->slave = NULL; - pm_runtime_put(dev->dev); + pm_runtime_put_sync_suspend(dev->dev); return 0; } diff --git a/drivers/i2c/busses/i2c-k1.c b/drivers/i2c/busses/i2c-k1.c index 5965b4cf6220..b68a21fff0b5 100644 --- a/drivers/i2c/busses/i2c-k1.c +++ b/drivers/i2c/busses/i2c-k1.c @@ -477,7 +477,7 @@ static int spacemit_i2c_xfer(struct i2c_adapter *adapt, struct i2c_msg *msgs, in ret = spacemit_i2c_wait_bus_idle(i2c); if (!ret) - spacemit_i2c_xfer_msg(i2c); + ret = spacemit_i2c_xfer_msg(i2c); else if (ret < 0) dev_dbg(i2c->dev, "i2c transfer error: %d\n", ret); else diff --git a/drivers/i2c/busses/i2c-npcm7xx.c b/drivers/i2c/busses/i2c-npcm7xx.c index de713b5747fe..05a140ec2b64 100644 --- a/drivers/i2c/busses/i2c-npcm7xx.c +++ b/drivers/i2c/busses/i2c-npcm7xx.c @@ -2178,10 +2178,14 @@ static int npcm_i2c_init_module(struct npcm_i2c *bus, enum i2c_mode mode, /* Check HW is OK: SDA and SCL should be high at this point. */ if ((npcm_i2c_get_SDA(&bus->adap) == 0) || (npcm_i2c_get_SCL(&bus->adap) == 0)) { - dev_err(bus->dev, "I2C%d init fail: lines are low\n", bus->num); - dev_err(bus->dev, "SDA=%d SCL=%d\n", npcm_i2c_get_SDA(&bus->adap), - npcm_i2c_get_SCL(&bus->adap)); - return -ENXIO; + dev_warn(bus->dev, " I2C%d SDA=%d SCL=%d, attempting to recover\n", bus->num, + npcm_i2c_get_SDA(&bus->adap), npcm_i2c_get_SCL(&bus->adap)); + if (npcm_i2c_recovery_tgclk(&bus->adap)) { + dev_err(bus->dev, "I2C%d init fail: SDA=%d SCL=%d\n", + bus->num, npcm_i2c_get_SDA(&bus->adap), + npcm_i2c_get_SCL(&bus->adap)); + return -ENXIO; + } } npcm_i2c_int_enable(bus, true); diff --git a/drivers/i2c/busses/i2c-pasemi-core.c b/drivers/i2c/busses/i2c-pasemi-core.c index bd128ab2e2eb..27ab09854c92 100644 --- a/drivers/i2c/busses/i2c-pasemi-core.c +++ b/drivers/i2c/busses/i2c-pasemi-core.c @@ -71,7 +71,7 @@ static inline int reg_read(struct pasemi_smbus *smbus, int reg) static void pasemi_reset(struct pasemi_smbus *smbus) { - u32 val = (CTL_MTR | CTL_MRR | (smbus->clk_div & CTL_CLK_M)); + u32 val = (CTL_MTR | CTL_MRR | CTL_UJM | (smbus->clk_div & CTL_CLK_M)); if (smbus->hw_rev >= 6) val |= CTL_EN; diff --git a/drivers/i2c/busses/i2c-tegra.c b/drivers/i2c/busses/i2c-tegra.c index 87976e99e6d0..049b4d154c23 100644 --- a/drivers/i2c/busses/i2c-tegra.c +++ b/drivers/i2c/busses/i2c-tegra.c @@ -1395,6 +1395,11 @@ static int tegra_i2c_xfer(struct i2c_adapter *adap, struct i2c_msg msgs[], ret = tegra_i2c_xfer_msg(i2c_dev, &msgs[i], MSG_END_CONTINUE); if (ret) break; + + /* Validate message length before proceeding */ + if (msgs[i].buf[0] == 0 || msgs[i].buf[0] > I2C_SMBUS_BLOCK_MAX) + break; + /* Set the msg length from first byte */ msgs[i].len += msgs[i].buf[0]; dev_dbg(i2c_dev->dev, "reading %d bytes\n", msgs[i].len); |