From cc2439fdecb85f27866cab0ae1cbf21a9b61c423 Mon Sep 17 00:00:00 2001 From: Jonathan Cameron Date: Fri, 12 Aug 2011 16:55:30 +0100 Subject: [PATCH] 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 Signed-off-by: Greg Kroah-Hartman --- drivers/staging/iio/industrialio-core.c | 40 ++++++++++++------------- 1 file changed, 20 insertions(+), 20 deletions(-) diff --git a/drivers/staging/iio/industrialio-core.c b/drivers/staging/iio/industrialio-core.c index 19819e7578c6..7ee4186c4dfa 100644 --- a/drivers/staging/iio/industrialio-core.c +++ b/drivers/staging/iio/industrialio-core.c @@ -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); } -- 2.20.1