Merge branch 'akpm' (patches from Andrew)

Merge fixes from Andrew Morton:
 "21 fixes"

* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (21 commits)
  writeback: fix initial dirty limit
  mm/memory-failure: set PageHWPoison before migrate_pages()
  mm: check __PG_HWPOISON separately from PAGE_FLAGS_CHECK_AT_*
  mm/memory-failure: give up error handling for non-tail-refcounted thp
  mm/memory-failure: fix race in counting num_poisoned_pages
  mm/memory-failure: unlock_page before put_page
  ipc: use private shmem or hugetlbfs inodes for shm segments.
  mm: initialize hotplugged pages as reserved
  ocfs2: fix shift left overflow
  kthread: export kthread functions
  fsnotify: fix oops in fsnotify_clear_marks_by_group_flags()
  lib/iommu-common.c: do not use 0xffffffffffffffffl for computing align_mask
  mm/slub: allow merging when SLAB_DEBUG_FREE is set
  signalfd: fix information leak in signalfd_copyinfo
  signal: fix information leak in copy_siginfo_to_user
  signal: fix information leak in copy_siginfo_from_user32
  ocfs2: fix BUG in ocfs2_downconvert_thread_do_work()
  fs, file table: reinit files_stat.max_files after deferred memory initialisation
  mm, meminit: replace rwsem with completion
  mm, meminit: allow early_pfn_to_nid to be used during runtime
  ...
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
index 31b00f9..f7b49d5c 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
@@ -1130,6 +1130,9 @@
 	uint32_t			me_feature_version;
 	uint32_t			ce_feature_version;
 	uint32_t			pfp_feature_version;
+	uint32_t			rlc_feature_version;
+	uint32_t			mec_feature_version;
+	uint32_t			mec2_feature_version;
 	struct amdgpu_ring		gfx_ring[AMDGPU_MAX_GFX_RINGS];
 	unsigned			num_gfx_rings;
 	struct amdgpu_ring		compute_ring[AMDGPU_MAX_COMPUTE_RINGS];
@@ -1639,6 +1642,7 @@
 	/* SDMA firmware */
 	const struct firmware	*fw;
 	uint32_t		fw_version;
+	uint32_t		feature_version;
 
 	struct amdgpu_ring	ring;
 };
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
index 9736892..3bfe67d 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
@@ -317,16 +317,17 @@
 			break;
 		case AMDGPU_INFO_FW_GFX_RLC:
 			fw_info.ver = adev->gfx.rlc_fw_version;
-			fw_info.feature = 0;
+			fw_info.feature = adev->gfx.rlc_feature_version;
 			break;
 		case AMDGPU_INFO_FW_GFX_MEC:
-			if (info->query_fw.index == 0)
+			if (info->query_fw.index == 0) {
 				fw_info.ver = adev->gfx.mec_fw_version;
-			else if (info->query_fw.index == 1)
+				fw_info.feature = adev->gfx.mec_feature_version;
+			} else if (info->query_fw.index == 1) {
 				fw_info.ver = adev->gfx.mec2_fw_version;
-			else
+				fw_info.feature = adev->gfx.mec2_feature_version;
+			} else
 				return -EINVAL;
-			fw_info.feature = 0;
 			break;
 		case AMDGPU_INFO_FW_SMC:
 			fw_info.ver = adev->pm.fw_version;
@@ -336,7 +337,7 @@
 			if (info->query_fw.index >= 2)
 				return -EINVAL;
 			fw_info.ver = adev->sdma[info->query_fw.index].fw_version;
-			fw_info.feature = 0;
+			fw_info.feature = adev->sdma[info->query_fw.index].feature_version;
 			break;
 		default:
 			return -EINVAL;
diff --git a/drivers/gpu/drm/amd/amdgpu/cik_sdma.c b/drivers/gpu/drm/amd/amdgpu/cik_sdma.c
index ab83cc1..15df46c 100644
--- a/drivers/gpu/drm/amd/amdgpu/cik_sdma.c
+++ b/drivers/gpu/drm/amd/amdgpu/cik_sdma.c
@@ -500,6 +500,7 @@
 		amdgpu_ucode_print_sdma_hdr(&hdr->header);
 		fw_size = le32_to_cpu(hdr->header.ucode_size_bytes) / 4;
 		adev->sdma[i].fw_version = le32_to_cpu(hdr->header.ucode_version);
+		adev->sdma[i].feature_version = le32_to_cpu(hdr->ucode_feature_version);
 		fw_data = (const __le32 *)
 			(adev->sdma[i].fw->data + le32_to_cpu(hdr->header.ucode_array_offset_bytes));
 		WREG32(mmSDMA0_UCODE_ADDR + sdma_offsets[i], 0);
diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v7_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v7_0.c
index 2db6ab0..0d8bf2c 100644
--- a/drivers/gpu/drm/amd/amdgpu/gfx_v7_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gfx_v7_0.c
@@ -3080,6 +3080,8 @@
 	mec_hdr = (const struct gfx_firmware_header_v1_0 *)adev->gfx.mec_fw->data;
 	amdgpu_ucode_print_gfx_hdr(&mec_hdr->header);
 	adev->gfx.mec_fw_version = le32_to_cpu(mec_hdr->header.ucode_version);
+	adev->gfx.mec_feature_version = le32_to_cpu(
+					mec_hdr->ucode_feature_version);
 
 	gfx_v7_0_cp_compute_enable(adev, false);
 
@@ -3102,6 +3104,8 @@
 		mec2_hdr = (const struct gfx_firmware_header_v1_0 *)adev->gfx.mec2_fw->data;
 		amdgpu_ucode_print_gfx_hdr(&mec2_hdr->header);
 		adev->gfx.mec2_fw_version = le32_to_cpu(mec2_hdr->header.ucode_version);
+		adev->gfx.mec2_feature_version = le32_to_cpu(
+				mec2_hdr->ucode_feature_version);
 
 		/* MEC2 */
 		fw_data = (const __le32 *)
@@ -4066,6 +4070,8 @@
 	hdr = (const struct rlc_firmware_header_v1_0 *)adev->gfx.rlc_fw->data;
 	amdgpu_ucode_print_rlc_hdr(&hdr->header);
 	adev->gfx.rlc_fw_version = le32_to_cpu(hdr->header.ucode_version);
+	adev->gfx.rlc_feature_version = le32_to_cpu(
+					hdr->ucode_feature_version);
 
 	gfx_v7_0_rlc_stop(adev);
 
@@ -5122,7 +5128,7 @@
 		dev_info(adev->dev, "  CP_HPD_EOP_CONTROL=0x%08X\n",
 			 RREG32(mmCP_HPD_EOP_CONTROL));
 
-		for (queue = 0; queue < 8; i++) {
+		for (queue = 0; queue < 8; queue++) {
 			cik_srbm_select(adev, me, pipe, queue, 0);
 			dev_info(adev->dev, "  queue: %d\n", queue);
 			dev_info(adev->dev, "  CP_PQ_WPTR_POLL_CNTL=0x%08X\n",
diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c
index 9e1d4dd..f5a42ab 100644
--- a/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c
@@ -587,6 +587,7 @@
 	int err;
 	struct amdgpu_firmware_info *info = NULL;
 	const struct common_firmware_header *header = NULL;
+	const struct gfx_firmware_header_v1_0 *cp_hdr;
 
 	DRM_DEBUG("\n");
 
@@ -611,6 +612,9 @@
 	err = amdgpu_ucode_validate(adev->gfx.pfp_fw);
 	if (err)
 		goto out;
+	cp_hdr = (const struct gfx_firmware_header_v1_0 *)adev->gfx.pfp_fw->data;
+	adev->gfx.pfp_fw_version = le32_to_cpu(cp_hdr->header.ucode_version);
+	adev->gfx.pfp_feature_version = le32_to_cpu(cp_hdr->ucode_feature_version);
 
 	snprintf(fw_name, sizeof(fw_name), "amdgpu/%s_me.bin", chip_name);
 	err = request_firmware(&adev->gfx.me_fw, fw_name, adev->dev);
@@ -619,6 +623,9 @@
 	err = amdgpu_ucode_validate(adev->gfx.me_fw);
 	if (err)
 		goto out;
+	cp_hdr = (const struct gfx_firmware_header_v1_0 *)adev->gfx.me_fw->data;
+	adev->gfx.me_fw_version = le32_to_cpu(cp_hdr->header.ucode_version);
+	adev->gfx.me_feature_version = le32_to_cpu(cp_hdr->ucode_feature_version);
 
 	snprintf(fw_name, sizeof(fw_name), "amdgpu/%s_ce.bin", chip_name);
 	err = request_firmware(&adev->gfx.ce_fw, fw_name, adev->dev);
@@ -627,12 +634,18 @@
 	err = amdgpu_ucode_validate(adev->gfx.ce_fw);
 	if (err)
 		goto out;
+	cp_hdr = (const struct gfx_firmware_header_v1_0 *)adev->gfx.ce_fw->data;
+	adev->gfx.ce_fw_version = le32_to_cpu(cp_hdr->header.ucode_version);
+	adev->gfx.ce_feature_version = le32_to_cpu(cp_hdr->ucode_feature_version);
 
 	snprintf(fw_name, sizeof(fw_name), "amdgpu/%s_rlc.bin", chip_name);
 	err = request_firmware(&adev->gfx.rlc_fw, fw_name, adev->dev);
 	if (err)
 		goto out;
 	err = amdgpu_ucode_validate(adev->gfx.rlc_fw);
+	cp_hdr = (const struct gfx_firmware_header_v1_0 *)adev->gfx.rlc_fw->data;
+	adev->gfx.rlc_fw_version = le32_to_cpu(cp_hdr->header.ucode_version);
+	adev->gfx.rlc_feature_version = le32_to_cpu(cp_hdr->ucode_feature_version);
 
 	snprintf(fw_name, sizeof(fw_name), "amdgpu/%s_mec.bin", chip_name);
 	err = request_firmware(&adev->gfx.mec_fw, fw_name, adev->dev);
@@ -641,6 +654,9 @@
 	err = amdgpu_ucode_validate(adev->gfx.mec_fw);
 	if (err)
 		goto out;
+	cp_hdr = (const struct gfx_firmware_header_v1_0 *)adev->gfx.mec_fw->data;
+	adev->gfx.mec_fw_version = le32_to_cpu(cp_hdr->header.ucode_version);
+	adev->gfx.mec_feature_version = le32_to_cpu(cp_hdr->ucode_feature_version);
 
 	snprintf(fw_name, sizeof(fw_name), "amdgpu/%s_mec2.bin", chip_name);
 	err = request_firmware(&adev->gfx.mec2_fw, fw_name, adev->dev);
@@ -648,6 +664,12 @@
 		err = amdgpu_ucode_validate(adev->gfx.mec2_fw);
 		if (err)
 			goto out;
+		cp_hdr = (const struct gfx_firmware_header_v1_0 *)
+						adev->gfx.mec2_fw->data;
+		adev->gfx.mec2_fw_version = le32_to_cpu(
+						cp_hdr->header.ucode_version);
+		adev->gfx.mec2_feature_version = le32_to_cpu(
+						cp_hdr->ucode_feature_version);
 	} else {
 		err = 0;
 		adev->gfx.mec2_fw = NULL;
@@ -1983,6 +2005,7 @@
 		adev->gfx.config.max_shader_engines = 1;
 		adev->gfx.config.max_tile_pipes = 2;
 		adev->gfx.config.max_sh_per_se = 1;
+		adev->gfx.config.max_backends_per_se = 2;
 
 		switch (adev->pdev->revision) {
 		case 0xc4:
@@ -1991,7 +2014,6 @@
 		case 0xcc:
 			/* B10 */
 			adev->gfx.config.max_cu_per_sh = 8;
-			adev->gfx.config.max_backends_per_se = 2;
 			break;
 		case 0xc5:
 		case 0x81:
@@ -2000,14 +2022,12 @@
 		case 0xcd:
 			/* B8 */
 			adev->gfx.config.max_cu_per_sh = 6;
-			adev->gfx.config.max_backends_per_se = 2;
 			break;
 		case 0xc6:
 		case 0xca:
 		case 0xce:
 			/* B6 */
 			adev->gfx.config.max_cu_per_sh = 6;
-			adev->gfx.config.max_backends_per_se = 2;
 			break;
 		case 0xc7:
 		case 0x87:
@@ -2015,7 +2035,6 @@
 		default:
 			/* B4 */
 			adev->gfx.config.max_cu_per_sh = 4;
-			adev->gfx.config.max_backends_per_se = 1;
 			break;
 		}
 
@@ -2275,7 +2294,6 @@
 
 	hdr = (const struct rlc_firmware_header_v2_0 *)adev->gfx.rlc_fw->data;
 	amdgpu_ucode_print_rlc_hdr(&hdr->header);
-	adev->gfx.rlc_fw_version = le32_to_cpu(hdr->header.ucode_version);
 
 	fw_data = (const __le32 *)(adev->gfx.rlc_fw->data +
 			   le32_to_cpu(hdr->header.ucode_array_offset_bytes));
@@ -2361,12 +2379,6 @@
 	amdgpu_ucode_print_gfx_hdr(&pfp_hdr->header);
 	amdgpu_ucode_print_gfx_hdr(&ce_hdr->header);
 	amdgpu_ucode_print_gfx_hdr(&me_hdr->header);
-	adev->gfx.pfp_fw_version = le32_to_cpu(pfp_hdr->header.ucode_version);
-	adev->gfx.ce_fw_version = le32_to_cpu(ce_hdr->header.ucode_version);
-	adev->gfx.me_fw_version = le32_to_cpu(me_hdr->header.ucode_version);
-	adev->gfx.me_feature_version = le32_to_cpu(me_hdr->ucode_feature_version);
-	adev->gfx.ce_feature_version = le32_to_cpu(ce_hdr->ucode_feature_version);
-	adev->gfx.pfp_feature_version = le32_to_cpu(pfp_hdr->ucode_feature_version);
 
 	gfx_v8_0_cp_gfx_enable(adev, false);
 
@@ -2622,7 +2634,6 @@
 
 	mec_hdr = (const struct gfx_firmware_header_v1_0 *)adev->gfx.mec_fw->data;
 	amdgpu_ucode_print_gfx_hdr(&mec_hdr->header);
-	adev->gfx.mec_fw_version = le32_to_cpu(mec_hdr->header.ucode_version);
 
 	fw_data = (const __le32 *)
 		(adev->gfx.mec_fw->data +
@@ -2641,7 +2652,6 @@
 
 		mec2_hdr = (const struct gfx_firmware_header_v1_0 *)adev->gfx.mec2_fw->data;
 		amdgpu_ucode_print_gfx_hdr(&mec2_hdr->header);
-		adev->gfx.mec2_fw_version = le32_to_cpu(mec2_hdr->header.ucode_version);
 
 		fw_data = (const __le32 *)
 			(adev->gfx.mec2_fw->data +
diff --git a/drivers/gpu/drm/amd/amdgpu/sdma_v2_4.c b/drivers/gpu/drm/amd/amdgpu/sdma_v2_4.c
index d789588..a988dfb 100644
--- a/drivers/gpu/drm/amd/amdgpu/sdma_v2_4.c
+++ b/drivers/gpu/drm/amd/amdgpu/sdma_v2_4.c
@@ -121,6 +121,7 @@
 	int err, i;
 	struct amdgpu_firmware_info *info = NULL;
 	const struct common_firmware_header *header = NULL;
+	const struct sdma_firmware_header_v1_0 *hdr;
 
 	DRM_DEBUG("\n");
 
@@ -142,6 +143,9 @@
 		err = amdgpu_ucode_validate(adev->sdma[i].fw);
 		if (err)
 			goto out;
+		hdr = (const struct sdma_firmware_header_v1_0 *)adev->sdma[i].fw->data;
+		adev->sdma[i].fw_version = le32_to_cpu(hdr->header.ucode_version);
+		adev->sdma[i].feature_version = le32_to_cpu(hdr->ucode_feature_version);
 
 		if (adev->firmware.smu_load) {
 			info = &adev->firmware.ucode[AMDGPU_UCODE_ID_SDMA0 + i];
@@ -541,8 +545,6 @@
 			hdr = (const struct sdma_firmware_header_v1_0 *)adev->sdma[i].fw->data;
 			amdgpu_ucode_print_sdma_hdr(&hdr->header);
 			fw_size = le32_to_cpu(hdr->header.ucode_size_bytes) / 4;
-			adev->sdma[i].fw_version = le32_to_cpu(hdr->header.ucode_version);
-
 			fw_data = (const __le32 *)
 				(adev->sdma[i].fw->data +
 				 le32_to_cpu(hdr->header.ucode_array_offset_bytes));
diff --git a/drivers/gpu/drm/amd/amdgpu/sdma_v3_0.c b/drivers/gpu/drm/amd/amdgpu/sdma_v3_0.c
index 7bb37b9..2b86569 100644
--- a/drivers/gpu/drm/amd/amdgpu/sdma_v3_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/sdma_v3_0.c
@@ -159,6 +159,7 @@
 	int err, i;
 	struct amdgpu_firmware_info *info = NULL;
 	const struct common_firmware_header *header = NULL;
+	const struct sdma_firmware_header_v1_0 *hdr;
 
 	DRM_DEBUG("\n");
 
@@ -183,6 +184,9 @@
 		err = amdgpu_ucode_validate(adev->sdma[i].fw);
 		if (err)
 			goto out;
+		hdr = (const struct sdma_firmware_header_v1_0 *)adev->sdma[i].fw->data;
+		adev->sdma[i].fw_version = le32_to_cpu(hdr->header.ucode_version);
+		adev->sdma[i].feature_version = le32_to_cpu(hdr->ucode_feature_version);
 
 		if (adev->firmware.smu_load) {
 			info = &adev->firmware.ucode[AMDGPU_UCODE_ID_SDMA0 + i];
@@ -630,8 +634,6 @@
 		hdr = (const struct sdma_firmware_header_v1_0 *)adev->sdma[i].fw->data;
 		amdgpu_ucode_print_sdma_hdr(&hdr->header);
 		fw_size = le32_to_cpu(hdr->header.ucode_size_bytes) / 4;
-		adev->sdma[i].fw_version = le32_to_cpu(hdr->header.ucode_version);
-
 		fw_data = (const __le32 *)
 			(adev->sdma[i].fw->data +
 				le32_to_cpu(hdr->header.ucode_array_offset_bytes));
diff --git a/drivers/gpu/drm/i2c/tda998x_drv.c b/drivers/gpu/drm/i2c/tda998x_drv.c
index fe1599d..424228b 100644
--- a/drivers/gpu/drm/i2c/tda998x_drv.c
+++ b/drivers/gpu/drm/i2c/tda998x_drv.c
@@ -606,8 +606,6 @@
 tda998x_write_if(struct tda998x_priv *priv, uint8_t bit, uint16_t addr,
 		 uint8_t *buf, size_t size)
 {
-	buf[PB(0)] = tda998x_cksum(buf, size);
-
 	reg_clear(priv, REG_DIP_IF_FLAGS, bit);
 	reg_write_range(priv, addr, buf, size);
 	reg_set(priv, REG_DIP_IF_FLAGS, bit);
@@ -627,6 +625,8 @@
 	buf[PB(4)] = p->audio_frame[4];
 	buf[PB(5)] = p->audio_frame[5] & 0xf8; /* DM_INH + LSV */
 
+	buf[PB(0)] = tda998x_cksum(buf, sizeof(buf));
+
 	tda998x_write_if(priv, DIP_IF_FLAGS_IF4, REG_IF4_HB0, buf,
 			 sizeof(buf));
 }