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Commit 5c205e81 authored by Deepak Kumar's avatar Deepak Kumar
Browse files

msm: kgsl: Deregister gpu address on memdesc_sg_virt failure 



When memdesc_sg_virt returns error in kgsl_setup_anon_useraddr function,
the gpu address registered in SVM region will not be deregistered.
This change deregisters the gpu address on memdesc_sg_virt failure.

Change-Id: Ic99167e283a0c6331bb9f5f0b608b6cdb3c918e4
Signed-off-by: default avatarNeeraja P <neerp@codeaurora.org>
Signed-off-by: default avatarDeepak Kumar <dkumar@codeaurora.org>
parent 147bb826

drivers/gpu/msm/kgsl.c

+8 −4
Original line number Diff line number Diff line 
// SPDX-License-Identifier: GPL-2.0-only

/*

 * Copyright (c) 2008-2020, The Linux Foundation. All rights reserved.

 * Copyright (c) 2008-2021, The Linux Foundation. All rights reserved.

 */



#include <uapi/linux/sched/types.h>
@@ -2506,6 +2506,7 @@ static int kgsl_setup_anon_useraddr(struct kgsl_pagetable *pagetable, 
	size_t offset, size_t size)

{

	/* Map an anonymous memory chunk */

	int ret;



	if (size == 0 || offset != 0 ||

		!IS_ALIGNED(size, PAGE_SIZE))
@@ -2516,8 +2517,6 @@ static int kgsl_setup_anon_useraddr(struct kgsl_pagetable *pagetable, 
	entry->memdesc.flags |= (uint64_t)KGSL_MEMFLAGS_USERMEM_ADDR;



	if (kgsl_memdesc_use_cpu_map(&entry->memdesc)) {

		int ret;



		/* Register the address in the database */

		ret = kgsl_mmu_set_svm_region(pagetable,

			(uint64_t) hostptr, (uint64_t) size);
@@ -2528,7 +2527,12 @@ static int kgsl_setup_anon_useraddr(struct kgsl_pagetable *pagetable, 
		entry->memdesc.gpuaddr = (uint64_t) hostptr;

	}



	return memdesc_sg_virt(&entry->memdesc, hostptr);

	ret = memdesc_sg_virt(&entry->memdesc, hostptr);



	if (ret && kgsl_memdesc_use_cpu_map(&entry->memdesc))

		kgsl_mmu_put_gpuaddr(&entry->memdesc);



	return ret;

}



#ifdef CONFIG_DMA_SHARED_BUFFER

drivers/gpu/msm/kgsl_mmu.c

+3 −2
Original line number Diff line number Diff line 
// SPDX-License-Identifier: GPL-2.0-only

/*

 * Copyright (c) 2002,2007-2020, The Linux Foundation. All rights reserved.

 * Copyright (c) 2002,2007-2021, The Linux Foundation. All rights reserved.

 */



#include <linux/slab.h>
@@ -425,7 +425,8 @@ void kgsl_mmu_put_gpuaddr(struct kgsl_memdesc *memdesc) 
		return;



	if (!kgsl_memdesc_is_global(memdesc) &&

			!kgsl_memdesc_is_reclaimed(memdesc))

			!kgsl_memdesc_is_reclaimed(memdesc) &&

			(KGSL_MEMDESC_MAPPED & memdesc->priv))

		unmap_fail = kgsl_mmu_unmap(pagetable, memdesc);



	/*