of/i2c: Fix module load order issue caused by of_i2c.c
Commit 959e85f7
, "i2c: add OF-style registration and binding" caused a
module dependency loop where of_i2c.c calls functions in i2c-core, and
i2c-core calls of_i2c_register_devices() in of_i2c. This means that
when i2c support is built as a module when CONFIG_OF is set, then
neither i2c_core nor of_i2c are able to be loaded.
This patch fixes the problem by moving the of_i2c_register_devices()
calls back into the device drivers. Device drivers already
specifically request the core code to parse the device tree for
devices anyway by setting the of_node pointer, so it isn't a big
deal to also call the registration function. The drivers just become
slightly more verbose.
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
This commit is contained in:
parent
64b4782fc9
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@ -677,6 +677,11 @@ static int __devinit cpm_i2c_probe(struct platform_device *ofdev,
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dev_dbg(&ofdev->dev, "hw routines for %s registered.\n",
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cpm->adap.name);
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/*
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* register OF I2C devices
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*/
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of_i2c_register_devices(&cpm->adap);
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return 0;
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out_shut:
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cpm_i2c_shutdown(cpm);
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@ -761,6 +761,9 @@ static int __devinit iic_probe(struct platform_device *ofdev,
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dev_info(&ofdev->dev, "using %s mode\n",
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dev->fast_mode ? "fast (400 kHz)" : "standard (100 kHz)");
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/* Now register all the child nodes */
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of_i2c_register_devices(adap);
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return 0;
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error_cleanup:
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@ -632,6 +632,7 @@ static int __devinit fsl_i2c_probe(struct platform_device *op,
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dev_err(i2c->dev, "failed to add adapter\n");
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goto fail_add;
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}
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of_i2c_register_devices(&i2c->adap);
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return result;
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@ -32,7 +32,6 @@
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#include <linux/init.h>
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#include <linux/idr.h>
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#include <linux/mutex.h>
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#include <linux/of_i2c.h>
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#include <linux/of_device.h>
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#include <linux/completion.h>
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#include <linux/hardirq.h>
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@ -874,9 +873,6 @@ static int i2c_register_adapter(struct i2c_adapter *adap)
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if (adap->nr < __i2c_first_dynamic_bus_num)
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i2c_scan_static_board_info(adap);
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/* Register devices from the device tree */
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of_i2c_register_devices(adap);
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/* Notify drivers */
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mutex_lock(&core_lock);
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bus_for_each_drv(&i2c_bus_type, NULL, adap, __process_new_adapter);
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