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staging:iio:core simplify and fix a bug in iio_device_(un)register_event_set. 

The unwinding index was j, not i and it is much simpler to do these as a single
loop unwinding those elements necessary in before jumping to the error handler.

Signed-off-by: Jonathan Cameron <jic23@cam.ac.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Jonathan Cameron 2011-08-12 16:55:30 +01:00 committed by Greg Kroah-Hartman
parent cd0380190f
commit cc2439fdec
1 changed files with 20 additions and 20 deletions
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40
drivers/staging/iio/industrialio-core.c
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@ -1061,7 +1061,7 @@ static int iio_device_register_eventset(struct iio_dev *dev_info)
if (ret) {
dev_err(&dev_info->dev,
"Could not get chrdev interface\n");
goto error_free_setup_ev_ints;
goto error_free_setup_event_lines;
}
dev_set_drvdata(&dev_info->event_interfaces[i].dev,
@ -1077,31 +1077,33 @@ static int iio_device_register_eventset(struct iio_dev *dev_info)
if (ret) {
dev_err(&dev_info->dev,
"Failed to register sysfs for event attrs");
goto error_remove_sysfs_interfaces;
iio_free_ev_int(&dev_info->event_interfaces[i]);
goto error_free_setup_event_lines;
}
}
for (i = 0; i < dev_info->info->num_interrupt_lines; i++) {
ret = __iio_add_event_config_attrs(dev_info, i);
if (ret)
goto error_unregister_config_attrs;
if (ret) {
if (dev_info->info->event_attrs != NULL)
sysfs_remove_group(&dev_info
->event_interfaces[i]
.dev.kobj,
&dev_info->info
->event_attrs[i]);
iio_free_ev_int(&dev_info->event_interfaces[i]);
goto error_free_setup_event_lines;
}
}
return 0;
error_unregister_config_attrs:
for (j = 0; j < i; j++)
__iio_remove_event_config_attrs(dev_info, i);
i = dev_info->info->num_interrupt_lines - 1;
error_remove_sysfs_interfaces:
for (j = 0; j < i; j++)
error_free_setup_event_lines:
for (j = 0; j < i; j++) {
__iio_remove_event_config_attrs(dev_info, j);
if (dev_info->info->event_attrs != NULL)
sysfs_remove_group(&dev_info
->event_interfaces[j].dev.kobj,
&dev_info->info->event_attrs[j]);
error_free_setup_ev_ints:
for (j = 0; j < i; j++)
->event_interfaces[j].dev.kobj,
&dev_info->info->event_attrs[j]);
iio_free_ev_int(&dev_info->event_interfaces[j]);
}
kfree(dev_info->event_interfaces);
error_ret:
@ -1120,10 +1122,8 @@ static void iio_device_unregister_eventset(struct iio_dev *dev_info)
sysfs_remove_group(&dev_info
->event_interfaces[i].dev.kobj,
&dev_info->info->event_attrs[i]);
}
for (i = 0; i < dev_info->info->num_interrupt_lines; i++)
iio_free_ev_int(&dev_info->event_interfaces[i]);
}
kfree(dev_info->event_interfaces);
}