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Commit 8502d66d authored by Andrzej Pietrasiewicz's avatar Andrzej Pietrasiewicz Committed by Felipe Balbi
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usb: gadget: f_mass_storage: create _fsg_common_free_buffers 



When configfs is in place, gadgets will have to be able to free
fsg buffers. Add a helper function.

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 e9edd199

drivers/usb/gadget/f_mass_storage.c

+13 −9
Original line number Diff line number Diff line
@@ -2642,6 +2642,18 @@ static inline int fsg_num_buffers_validate(unsigned int fsg_num_buffers) 
	return -EINVAL;

}



static void _fsg_common_free_buffers(struct fsg_buffhd *buffhds, unsigned n)

{

	if (buffhds) {

		struct fsg_buffhd *bh = buffhds;

		while (n--) {

			kfree(bh->buf);

			++bh;

		}

		kfree(buffhds);

	}

}



struct fsg_common *fsg_common_init(struct fsg_common *common,

				   struct usb_composite_dev *cdev,

				   struct fsg_config *cfg)
@@ -2897,15 +2909,7 @@ static void fsg_common_release(struct kref *ref) 
		kfree(common->luns);

	}



	{

		struct fsg_buffhd *bh = common->buffhds;

		unsigned i = common->fsg_num_buffers;

		do {

			kfree(bh->buf);

		} while (++bh, --i);

	}



	kfree(common->buffhds);

	_fsg_common_free_buffers(common->buffhds, common->fsg_num_buffers);

	if (common->free_storage_on_release)

		kfree(common);

}