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Commit 2b817fc0 authored by Preeti Nagar's avatar Preeti Nagar Committed by Gerrit - the friendly Code Review server
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seemp: Freeing el2 shared memory 



Mechanism for QSSP kernel to notify QHEE that
shared memory is going to be freed.

Change-Id: I592b115b42f6b5b3afdcc6b5131da7f6ea380edc
Signed-off-by: default avatarPreeti Nagar <pnagar@codeaurora.org>
parent 31c09dc0

drivers/platform/msm/seemp_core/seemp_logk.c

+18 −0
Original line number Diff line number Diff line
@@ -34,6 +34,8 @@ 
#define KP_EL2_REPORT_REVISION 0x01000101

#define INVALID_PID -1



#define EL2_SCM_ID2 0x02001905



static struct seemp_logk_dev *slogk_dev;



static unsigned int ring_sz = FOUR_MB;
@@ -780,8 +782,24 @@ __init int seemp_logk_init(void) 


__exit void seemp_logk_cleanup(void)

{

	int ret;



	dev_t devno = MKDEV(slogk_dev->major, slogk_dev->minor);



	if (el2_shared_mem != NULL) {

		struct scm_desc desc = {0};



		desc.arginfo = SCM_ARGS(0);

		ret = scm_call2(EL2_SCM_ID2, &desc);

		if (ret || desc.ret[0] || desc.ret[1]) {

			pr_err("SCM call failed with ret val = %d %d %d\n",

			ret, (int)desc.ret[0], (int)desc.ret[1]);

		} else {

			free_page((unsigned long) el2_shared_mem);

			el2_shared_mem = NULL;

		}

	}



	if (rtic_thread) {

		kthread_stop(rtic_thread);

		rtic_thread = NULL;