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Merge branch 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux

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Pull i2c fixes from Wolfram Sang:
 "Mostly slight adjusments for new drivers, but also one core fix for
  which finally the dependencies are now available as well"

* 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
  i2c: Mark instantiated device nodes with OF_POPULATE
  i2c: jz4780: Fix return value if probe fails
  i2c: xgene-slimpro: Fix missing mbox_free_channel call in probe error path
  i2c: I2C_MT65XX should depend on HAS_DMA
This commit is contained in:
Linus Torvalds 2015-07-11 11:24:15 -07:00
commit e49251988b
4 changed files with 25 additions and 8 deletions
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1
drivers/i2c/busses/Kconfig
View File

@ -633,6 +633,7 @@ config I2C_MPC
config I2C_MT65XX
tristate "MediaTek I2C adapter"
depends on ARCH_MEDIATEK || COMPILE_TEST
depends on HAS_DMA
help
This selects the MediaTek(R) Integrated Inter Circuit bus driver
for MT65xx and MT81xx.

15
drivers/i2c/busses/i2c-jz4780.c
View File

@ -764,12 +764,15 @@ static int jz4780_i2c_probe(struct platform_device *pdev)
if (IS_ERR(i2c->clk))
return PTR_ERR(i2c->clk);
clk_prepare_enable(i2c->clk);
ret = clk_prepare_enable(i2c->clk);
if (ret)
return ret;
if (of_property_read_u32(pdev->dev.of_node, "clock-frequency",
&clk_freq)) {
ret = of_property_read_u32(pdev->dev.of_node, "clock-frequency",
&clk_freq);
if (ret) {
dev_err(&pdev->dev, "clock-frequency not specified in DT");
return clk_freq;
goto err;
}
i2c->speed = clk_freq / 1000;
@ -790,10 +793,8 @@ static int jz4780_i2c_probe(struct platform_device *pdev)
i2c->irq = platform_get_irq(pdev, 0);
ret = devm_request_irq(&pdev->dev, i2c->irq, jz4780_i2c_irq, 0,
dev_name(&pdev->dev), i2c);
if (ret) {
ret = -ENODEV;
if (ret)
goto err;
}
ret = i2c_add_adapter(&i2c->adap);
if (ret < 0) {

1
drivers/i2c/busses/i2c-xgene-slimpro.c
View File

@ -419,6 +419,7 @@ static int xgene_slimpro_i2c_probe(struct platform_device *pdev)
rc = i2c_add_adapter(adapter);
if (rc) {
dev_err(&pdev->dev, "Adapter registeration failed\n");
mbox_free_channel(ctx->mbox_chan);
return rc;
}

16
drivers/i2c/i2c-core.c
View File

@ -1012,6 +1012,8 @@ EXPORT_SYMBOL_GPL(i2c_new_device);
*/
void i2c_unregister_device(struct i2c_client *client)
{
if (client->dev.of_node)
of_node_clear_flag(client->dev.of_node, OF_POPULATED);
device_unregister(&client->dev);
}
EXPORT_SYMBOL_GPL(i2c_unregister_device);
@ -1320,8 +1322,11 @@ static void of_i2c_register_devices(struct i2c_adapter *adap)
dev_dbg(&adap->dev, "of_i2c: walking child nodes\n");
for_each_available_child_of_node(adap->dev.of_node, node)
for_each_available_child_of_node(adap->dev.of_node, node) {
if (of_node_test_and_set_flag(node, OF_POPULATED))
continue;
of_i2c_register_device(adap, node);
}
}
static int of_dev_node_match(struct device *dev, void *data)
@ -1853,6 +1858,11 @@ static int of_i2c_notify(struct notifier_block *nb, unsigned long action,
if (adap == NULL)
return NOTIFY_OK; /* not for us */
if (of_node_test_and_set_flag(rd->dn, OF_POPULATED)) {
put_device(&adap->dev);
return NOTIFY_OK;
}
client = of_i2c_register_device(adap, rd->dn);
put_device(&adap->dev);
@ -1863,6 +1873,10 @@ static int of_i2c_notify(struct notifier_block *nb, unsigned long action,
}
break;
case OF_RECONFIG_CHANGE_REMOVE:
/* already depopulated? */
if (!of_node_check_flag(rd->dn, OF_POPULATED))
return NOTIFY_OK;
/* find our device by node */
client = of_find_i2c_device_by_node(rd->dn);
if (client == NULL)