On 02/13/2017 01:03 PM, Harald Freudenberger wrote:
> On 02/09/2017 03:48 PM, Paul Gortmaker wrote:
>> The Makefile in drivers/s390 has:
>>
>> obj-y += cio/ block/ char/ crypto/ net/ scsi/ virtio/
>>
>> ..and the Makefile in crypto/ has:
>>
>> ap-objs := ap_bus.o ap_card.o ap_queue.o
>>
>> ...meaning that it currently is not being built as a module by anyone.
>>
>> Lets remove the modular code that is essentially orphaned, so that
>> when reading the driver there is no doubt it is builtin-only.
>>
>> Since module_init translates to device_initcall in the non-modular
>> case, the init ordering remains unchanged with this commit.
>>
>> Also note that MODULE_ALIAS is a no-op for non-module builds.
>>
>> We also delete the MODULE_LICENSE tag etc. since all that information
>> is already contained at the top of the file in the comments.
>>
>> We replace module.h with moduleparam.h since the file does declare
>> some module parameters even though it is not modular itself.
>>
>> Cc: Harald Freudenberger <fre...@de.ibm.com>
>> Cc: Martin Schwidefsky <schwidef...@de.ibm.com>
>> Cc: Heiko Carstens <heiko.carst...@de.ibm.com>
>> Cc: linux-s...@vger.kernel.org
>> Signed-off-by: Paul Gortmaker <paul.gortma...@windriver.com>
>> ---
>> drivers/s390/crypto/ap_bus.c | 54
>> +++-----------------------------------------
>> 1 file changed, 3 insertions(+), 51 deletions(-)
>>
>> diff --git a/drivers/s390/crypto/ap_bus.c b/drivers/s390/crypto/ap_bus.c
>> index 5fa699192864..7183a316f9be 100644
>> --- a/drivers/s390/crypto/ap_bus.c
>> +++ b/drivers/s390/crypto/ap_bus.c
>> @@ -27,7 +27,7 @@
>> #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
>>
>> #include <linux/kernel_stat.h>
>> -#include <linux/module.h>
>> +#include <linux/moduleparam.h>
>> #include <linux/init.h>
>> #include <linux/delay.h>
>> #include <linux/err.h>
>> @@ -54,16 +54,7 @@
>> #include "ap_debug.h"
>>
>> /*
>> - * Module description.
>> - */
>> -MODULE_AUTHOR("IBM Corporation");
>> -MODULE_DESCRIPTION("Adjunct Processor Bus driver, " \
>> - "Copyright IBM Corp. 2006, 2012");
>> -MODULE_LICENSE("GPL");
>> -MODULE_ALIAS_CRYPTO("z90crypt");
>> -
>> -/*
>> - * Module parameter
>> + * Module parameters; note though this file itself isn't modular.
>> */
>> int ap_domain_index = -1; /* Adjunct Processor Domain Index */
>> static DEFINE_SPINLOCK(ap_domain_lock);
>> @@ -1270,43 +1261,4 @@ int __init ap_module_init(void)
>> kfree(ap_configuration);
>> return rc;
>> }
>> -
>> -/**
>> - * ap_modules_exit(): The module termination code
>> - *
>> - * Terminates the module.
>> - */
>> -void ap_module_exit(void)
>> -{
>> - int i;
>> -
>> - initialised = false;
>> - ap_reset_domain();
>> - ap_poll_thread_stop();
>> - del_timer_sync(&ap_config_timer);
>> - hrtimer_cancel(&ap_poll_timer);
>> - tasklet_kill(&ap_tasklet);
>> -
>> - /* first remove queue devices */
>> - bus_for_each_dev(&ap_bus_type, NULL, NULL,
>> - __ap_queue_devices_unregister);
>> - /* now remove the card devices */
>> - bus_for_each_dev(&ap_bus_type, NULL, NULL,
>> - __ap_card_devices_unregister);
>> -
>> - /* remove bus attributes */
>> - for (i = 0; ap_bus_attrs[i]; i++)
>> - bus_remove_file(&ap_bus_type, ap_bus_attrs[i]);
>> - unregister_pm_notifier(&ap_power_notifier);
>> - root_device_unregister(ap_root_device);
>> - bus_unregister(&ap_bus_type);
>> - kfree(ap_configuration);
>> - unregister_reset_call(&ap_reset_call);
>> - if (ap_using_interrupts())
>> - unregister_adapter_interrupt(&ap_airq);
>> -
>> - ap_debug_exit();
>> -}
>> -
>> -module_init(ap_module_init);
>> -module_exit(ap_module_exit);
>> +device_initcall(ap_module_init);
> Thanks Paul for this patch.
> I am struggling with the change as I still like to build the ap device driver
> as a kernel module.
> It makes the development cycle somewhat easier to have this possibility with
> just a oneline
> change in the Makefile (replace obj-$(subst m,y,$(CONFIG_ZCRYPT)) += ap.o
> with obj-$(CONFIG_ZCRYPT) += ap.o).
>
> However, you are right. As the ap driver is official not supported as a
> module the module
> code may get removed. Let me think about this some hours ...
>
> regards H.Freudenberger
>
>
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>
patch applied.
Thanks
