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Commit b24650df authored by Andrzej Pietrasiewicz's avatar Andrzej Pietrasiewicz Committed by Felipe Balbi
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usb: gadget: f_mass_storage: create fsg_common_setup for use in fsg_common_init 



fsg_common_init is a lengthy function. Factor a portion of it out.

Signed-off-by: default avatarAndrzej Pietrasiewicz <andrzej.p@samsung.com>
Signed-off-by: default avatarKyungmin Park <kyungmin.park@samsung.com>
Acked-by: default avatarMichal Nazarewicz <mina86@mina86.com>
Signed-off-by: default avatarFelipe Balbi <balbi@ti.com>
parent bd528d4e

drivers/usb/gadget/f_mass_storage.c

+24 −16
Original line number Diff line number Diff line
@@ -2643,6 +2643,27 @@ static inline int fsg_num_buffers_validate(unsigned int fsg_num_buffers) 
	return -EINVAL;

}



static struct fsg_common *fsg_common_setup(struct fsg_common *common)

{

	if (!common) {

		common = kzalloc(sizeof(*common), GFP_KERNEL);

		if (!common)

			return ERR_PTR(-ENOMEM);

		common->free_storage_on_release = 1;

	} else {

		memset(common, 0, sizeof(*common));

		common->free_storage_on_release = 0;

	}

	init_rwsem(&common->filesem);

	spin_lock_init(&common->lock);

	kref_init(&common->ref);

	init_completion(&common->thread_notifier);

	init_waitqueue_head(&common->fsg_wait);

	common->state = FSG_STATE_TERMINATED;



	return common;

}



void fsg_common_set_sysfs(struct fsg_common *common, bool sysfs)

{

	common->sysfs = sysfs;
@@ -2711,16 +2732,9 @@ struct fsg_common *fsg_common_init(struct fsg_common *common, 
		return ERR_PTR(-EINVAL);

	}



	/* Allocate? */

	if (!common) {

		common = kzalloc(sizeof *common, GFP_KERNEL);

		if (!common)

			return ERR_PTR(-ENOMEM);

		common->free_storage_on_release = 1;

	} else {

		memset(common, 0, sizeof *common);

		common->free_storage_on_release = 0;

	}

	common = fsg_common_setup(common);

	if (IS_ERR(common))

		return common;

	fsg_common_set_sysfs(common, true);

	common->state = FSG_STATE_IDLE;
@@ -2760,8 +2774,6 @@ struct fsg_common *fsg_common_init(struct fsg_common *common, 
	}

	common->luns = curlun_it;



	init_rwsem(&common->filesem);



	for (i = 0, lcfg = cfg->luns; i < nluns; ++i, ++curlun_it, ++lcfg) {

		struct fsg_lun *curlun;
@@ -2855,8 +2867,6 @@ struct fsg_common *fsg_common_init(struct fsg_common *common, 
	common->can_stall = cfg->can_stall &&

		!(gadget_is_at91(common->gadget));



	spin_lock_init(&common->lock);

	kref_init(&common->ref);



	/* Tell the thread to start working */

	common->thread_task =
@@ -2865,8 +2875,6 @@ struct fsg_common *fsg_common_init(struct fsg_common *common, 
		rc = PTR_ERR(common->thread_task);

		goto error_release;

	}

	init_completion(&common->thread_notifier);

	init_waitqueue_head(&common->fsg_wait);



	/* Information */

	INFO(common, FSG_DRIVER_DESC ", version: " FSG_DRIVER_VERSION "\n");