diff options
| author | Simon Glass <sjg@chromium.org> | 2017-09-17 16:54:53 -0600 |
|---|---|---|
| committer | Simon Glass <sjg@chromium.org> | 2017-10-08 20:41:09 -0600 |
| commit | 7c84319af9c76084f50f3f2b97545bfa05f3971d (patch) | |
| tree | b4bad5c9afc2ca9dbd59778e306e11b4a34786c2 /drivers/i2c | |
| parent | 4d686041895a8fd419bbc3842856239c6298d1f2 (diff) | |
dm: gpio: Correct use of -ENODEV in drivers
In U-Boot -ENODEV means that there is no device. When there is a problem
with the device, drivers should return an error like -ENXIO or -EREMOTEIO.
When the device tree properties cannot be read correct , they should
return -EINVAL.
Update various GPIO drivers to follow this rule, to help with consistency
for future driver writers.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reported-by: Adam Ford <aford173@gmail.com>
Diffstat (limited to 'drivers/i2c')
| -rw-r--r-- | drivers/i2c/imx_lpi2c.c | 2 | ||||
| -rw-r--r-- | drivers/i2c/mxc_i2c.c | 12 | ||||
| -rw-r--r-- | drivers/i2c/tegra186_bpmp_i2c.c | 2 |
3 files changed, 8 insertions, 8 deletions
diff --git a/drivers/i2c/imx_lpi2c.c b/drivers/i2c/imx_lpi2c.c index aa97196e23..e7ec17fe9e 100644 --- a/drivers/i2c/imx_lpi2c.c +++ b/drivers/i2c/imx_lpi2c.c @@ -412,7 +412,7 @@ static int imx_lpi2c_probe(struct udevice *bus) addr = devfdt_get_addr(bus); if (addr == FDT_ADDR_T_NONE) - return -ENODEV; + return -EINVAL; i2c_bus->base = addr; i2c_bus->index = bus->seq; diff --git a/drivers/i2c/mxc_i2c.c b/drivers/i2c/mxc_i2c.c index b7bb76c0ed..abf1da2ae3 100644 --- a/drivers/i2c/mxc_i2c.c +++ b/drivers/i2c/mxc_i2c.c @@ -176,7 +176,7 @@ static int bus_i2c_set_bus_speed(struct mxc_i2c_bus *i2c_bus, int speed) int reg_shift = quirk ? VF610_I2C_REGSHIFT : IMX_I2C_REGSHIFT; if (!base) - return -ENODEV; + return -EINVAL; /* Store divider value */ writeb(idx, base + (IFDR << reg_shift)); @@ -239,7 +239,7 @@ static int tx_byte(struct mxc_i2c_bus *i2c_bus, u8 byte) if (ret < 0) return ret; if (ret & I2SR_RX_NO_AK) - return -ENODEV; + return -EREMOTEIO; return 0; } @@ -418,14 +418,14 @@ static int i2c_init_transfer(struct mxc_i2c_bus *i2c_bus, u8 chip, VF610_I2C_REGSHIFT : IMX_I2C_REGSHIFT; if (!i2c_bus->base) - return -ENODEV; + return -EINVAL; for (retry = 0; retry < 3; retry++) { ret = i2c_init_transfer_(i2c_bus, chip, addr, alen); if (ret >= 0) return 0; i2c_imx_stop(i2c_bus); - if (ret == -ENODEV) + if (ret == -EREMOTEIO) return ret; printf("%s: failed for chip 0x%x retry=%d\n", __func__, chip, @@ -754,7 +754,7 @@ static int mxc_i2c_probe(struct udevice *bus) addr = devfdt_get_addr(bus); if (addr == FDT_ADDR_T_NONE) - return -ENODEV; + return -EINVAL; i2c_bus->base = addr; i2c_bus->index = bus->seq; @@ -783,7 +783,7 @@ static int mxc_i2c_probe(struct udevice *bus) !dm_gpio_is_valid(&i2c_bus->scl_gpio) | ret | ret2) { dev_err(dev, "i2c bus %d at %lu, fail to request scl/sda gpio\n", bus->seq, i2c_bus->base); - return -ENODEV; + return -EINVAL; } } diff --git a/drivers/i2c/tegra186_bpmp_i2c.c b/drivers/i2c/tegra186_bpmp_i2c.c index 931c6de508..b46a09a4e0 100644 --- a/drivers/i2c/tegra186_bpmp_i2c.c +++ b/drivers/i2c/tegra186_bpmp_i2c.c @@ -94,7 +94,7 @@ static int tegra186_bpmp_i2c_probe(struct udevice *dev) "nvidia,bpmp-bus-id", U32_MAX); if (priv->bpmp_bus_id == U32_MAX) { debug("%s: could not parse nvidia,bpmp-bus-id\n", __func__); - return -ENODEV; + return -EINVAL; } return 0; |