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Commit 56f93850 authored by Zhen Kong's avatar Zhen Kong Committed by Gerrit - the friendly Code Review server
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crypto: msm: unmap all ion buffers in qcedev_release 



unmap all ion buffers in qcedev_release.

Change-Id: I4dd2a535acc6d18c88583472a50e123b47a0c7f8
Signed-off-by: default avatarZhen Kong <zkong@codeaurora.org>
parent 0780e20a

drivers/crypto/msm/qcedev.c

+4 −0
Original line number Diff line number Diff line
@@ -278,6 +278,10 @@ static int qcedev_release(struct inode *inode, struct file *file) 
		pr_err("%s: invalid handle %pK\n",

					__func__, podev);

	}



	if (qcedev_unmap_all_buffers(handle))

		pr_err("%s: failed to unmap all ion buffers\n", __func__);



	kzfree(handle);

	file->private_data = NULL;

	if (podev != NULL && podev->platform_support.bus_scale_table != NULL)

drivers/crypto/msm/qcedev_smmu.c

+36 −0
Original line number Diff line number Diff line
@@ -407,3 +407,39 @@ int qcedev_check_and_unmap_buffer(void *handle, int fd) 


	return 0;

}



int qcedev_unmap_all_buffers(void *handle)

{

	struct qcedev_reg_buf_info *binfo = NULL;

	struct qcedev_mem_client *mem_client = NULL;

	struct qcedev_handle *qce_hndl = handle;

	struct list_head *pos;



	if (!handle) {

		pr_err("%s: err: invalid input arguments\n", __func__);

		return -EINVAL;

	}



	if (!qce_hndl->cntl || !qce_hndl->cntl->mem_client) {

		pr_err("%s: err: invalid qcedev handle\n", __func__);

		return -EINVAL;

	}

	mem_client = qce_hndl->cntl->mem_client;



	if (mem_client->mtype != MEM_ION)

		return -EPERM;



	mutex_lock(&qce_hndl->registeredbufs.lock);

	while (!list_empty(&qce_hndl->registeredbufs.list)) {

		pos = qce_hndl->registeredbufs.list.next;

		binfo = list_entry(pos, struct qcedev_reg_buf_info, list);

		if (binfo)

			qcedev_unmap_buffer(qce_hndl, mem_client, binfo);

		list_del(pos);

		kfree(binfo);

	}

	mutex_unlock(&qce_hndl->registeredbufs.lock);



	return 0;

}

drivers/crypto/msm/qcedev_smmu.h

+1 −0
Original line number Diff line number Diff line
@@ -73,6 +73,7 @@ int qcedev_check_and_map_buffer(void *qce_hndl, 
		int fd, unsigned int offset, unsigned int fd_size,

		unsigned long long *vaddr);

int qcedev_check_and_unmap_buffer(void *handle, int fd);

int qcedev_unmap_all_buffers(void *handle);



extern struct qcedev_reg_buf_info *global_binfo_in;

extern struct qcedev_reg_buf_info *global_binfo_out;