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Revision a3f9bcab509a4bf003942e7e2048904cfe7cb5c5 authored by Rahul Sharma on 20 November 2012, 11:28:26 UTC, committed by Inki Dae on 05 December 2012, 05:39:21 UTC 
drm: exynos: fix for loosing display mode header during mode adjustment
 
This patch is to preserve the display mode header during the mode adjustment.
Display mode header is overwritten with the adjusted mode header which is
throwing the stack dump.

Signed-off-by: Rahul Sharma <rahul.sharma@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
1 parent 3dc5fa9
Raw File
n2_asm.S 
/* n2_asm.S: Hypervisor calls for NCS support.
 *
 * Copyright (C) 2009 David S. Miller <davem@davemloft.net>
 */

#include <linux/linkage.h>
#include <asm/hypervisor.h>
#include "n2_core.h"

	/* o0: queue type
	 * o1: RA of queue
	 * o2: num entries in queue
	 * o3: address of queue handle return
	 */
ENTRY(sun4v_ncs_qconf)
	mov	HV_FAST_NCS_QCONF, %o5
	ta	HV_FAST_TRAP
	stx	%o1, [%o3]
	retl
	 nop
ENDPROC(sun4v_ncs_qconf)

	/* %o0: queue handle
	 * %o1: address of queue type return
	 * %o2: address of queue base address return
	 * %o3: address of queue num entries return
	 */
ENTRY(sun4v_ncs_qinfo)
	mov	%o1, %g1
	mov	%o2, %g2
	mov	%o3, %g3
	mov	HV_FAST_NCS_QINFO, %o5
	ta	HV_FAST_TRAP
	stx	%o1, [%g1]
	stx	%o2, [%g2]
	stx	%o3, [%g3]
	retl
	 nop
ENDPROC(sun4v_ncs_qinfo)

	/* %o0: queue handle
	 * %o1: address of head offset return
	 */
ENTRY(sun4v_ncs_gethead)
	mov	%o1, %o2
	mov	HV_FAST_NCS_GETHEAD, %o5
	ta	HV_FAST_TRAP
	stx	%o1, [%o2]
	retl
	 nop
ENDPROC(sun4v_ncs_gethead)

	/* %o0: queue handle
	 * %o1: address of tail offset return
	 */
ENTRY(sun4v_ncs_gettail)
	mov	%o1, %o2
	mov	HV_FAST_NCS_GETTAIL, %o5
	ta	HV_FAST_TRAP
	stx	%o1, [%o2]
	retl
	 nop
ENDPROC(sun4v_ncs_gettail)

	/* %o0: queue handle
	 * %o1: new tail offset
	 */
ENTRY(sun4v_ncs_settail)
	mov	HV_FAST_NCS_SETTAIL, %o5
	ta	HV_FAST_TRAP
	retl
	 nop
ENDPROC(sun4v_ncs_settail)

	/* %o0: queue handle
	 * %o1: address of devino return
	 */
ENTRY(sun4v_ncs_qhandle_to_devino)
	mov	%o1, %o2
	mov	HV_FAST_NCS_QHANDLE_TO_DEVINO, %o5
	ta	HV_FAST_TRAP
	stx	%o1, [%o2]
	retl
	 nop
ENDPROC(sun4v_ncs_qhandle_to_devino)

	/* %o0: queue handle
	 * %o1: new head offset
	 */
ENTRY(sun4v_ncs_sethead_marker)
	mov	HV_FAST_NCS_SETHEAD_MARKER, %o5
	ta	HV_FAST_TRAP
	retl
	 nop
ENDPROC(sun4v_ncs_sethead_marker)
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