Merge tag 'qcom-drivers-for-4.20' of git://git.kernel.org/pub/scm/linux/kernel/git/agross/linux into next/drivers

Qualcomm ARM Based Driver Updates for v4.20

* Refactor of SCM compatibles and clock requirements
* SMEM cleanup
* Add LLCC EDAC driver
* Fixes for GENI clocks and macros
* Fix includes for llcc-slice and smem
* String overflow fixes for APR and wcnss_ctrl
* Fixup for COMPILE_TEST of qcom driver Kconfigs
* Cleanup of Kconfig depends of rpmh, smd_rpm, smsm, and smp2p
* Add SCM dependencies to SPM and rmtfs-mem

* tag 'qcom-drivers-for-4.20' of git://git.kernel.org/pub/scm/linux/kernel/git/agross/linux: (38 commits)
  soc: qcom: geni: geni_se_clk_freq_match() should always accept multiples
  soc: qcom: geni: Don't ignore clk_round_rate() errors in geni_se_clk_tbl_get()
  soc: qcom: geni: Make version macros simpler
  dt-bindings: firmware: scm: Add MSM8998 and SDM845
  firmware: qcom: scm: Refactor clock handling
  dt-bindings: firmware: scm: Refactor compatibles and clocks
  soc: qcom: smem: a few last cleanups
  soc: qcom: smem: verify partition host ids match
  soc: qcom: smem: small change in global entry loop
  soc: qcom: smem: verify partition offset_free_uncached
  soc: qcom: smem: verify partition header size
  soc: qcom: smem: introduce qcom_smem_partition_header()
  soc: qcom: smem: require order of host ids to match
  soc: qcom: smem: verify both host ids in partition header
  soc: qcom: smem: small refactor in qcom_smem_enumerate_partitions()
  soc: qcom: smem: always ignore partitions with 0 offset or size
  soc: qcom: smem: initialize region struct only when successful
  soc: qcom: smem: rename variable in qcom_smem_get_global()
  drivers: qcom: rpmh-rsc: clear wait_for_compl after use
  soc: qcom: rmtfs-mem: Validate that scm is available
  ...

Signed-off-by: Arnd Bergmann <arnd@arndb.de>

9 files changed, 183 insertions, 145 deletions

diff --git a/drivers/soc/qcom/Kconfig b/drivers/soc/qcom/Kconfig
index ba79b609aca2..684cb51694d1 100644
--- a/drivers/soc/qcom/Kconfig
+++ b/drivers/soc/qcom/Kconfig
@@ -33,7 +33,7 @@ config QCOM_GLINK_SSR
 
 config QCOM_GSBI
         tristate "QCOM General Serial Bus Interface"
-        depends on ARCH_QCOM
+        depends on ARCH_QCOM || COMPILE_TEST
         select MFD_SYSCON
         help
           Say y here to enable GSBI support.  The GSBI provides control
@@ -42,7 +42,7 @@ config QCOM_GSBI
 
 config QCOM_LLCC
 	tristate "Qualcomm Technologies, Inc. LLCC driver"
-	depends on ARCH_QCOM
+	depends on ARCH_QCOM || COMPILE_TEST
 	help
 	  Qualcomm Technologies, Inc. platform specific
 	  Last Level Cache Controller(LLCC) driver. This provides interfaces
@@ -73,7 +73,8 @@ config QCOM_PM
 
 config QCOM_QMI_HELPERS
 	tristate
-	depends on ARCH_QCOM && NET
+	depends on ARCH_QCOM || COMPILE_TEST
+	depends on NET
 	help
 	  Helper library for handling QMI encoded messages.  QMI encoded
 	  messages are used in communication between the majority of QRTR
@@ -94,7 +95,7 @@ config QCOM_RMTFS_MEM
 
 config QCOM_RPMH
 	bool "Qualcomm RPM-Hardened (RPMH) Communication"
-	depends on ARCH_QCOM && ARM64 && OF || COMPILE_TEST
+	depends on ARCH_QCOM && ARM64 || COMPILE_TEST
 	help
 	  Support for communication with the hardened-RPM blocks in
 	  Qualcomm Technologies Inc (QTI) SoCs. RPMH communication uses an
@@ -104,7 +105,7 @@ config QCOM_RPMH
 
 config QCOM_SMEM
 	tristate "Qualcomm Shared Memory Manager (SMEM)"
-	depends on ARCH_QCOM
+	depends on ARCH_QCOM || COMPILE_TEST
 	depends on HWSPINLOCK
 	help
 	  Say y here to enable support for the Qualcomm Shared Memory Manager.
@@ -113,8 +114,8 @@ config QCOM_SMEM
 
 config QCOM_SMD_RPM
 	tristate "Qualcomm Resource Power Manager (RPM) over SMD"
-	depends on ARCH_QCOM
-	depends on RPMSG && OF
+	depends on ARCH_QCOM || COMPILE_TEST
+	depends on RPMSG
 	help
 	  If you say yes to this option, support will be included for the
 	  Resource Power Manager system found in the Qualcomm 8974 based
@@ -134,6 +135,7 @@ config QCOM_SMP2P
 	depends on MAILBOX
 	depends on QCOM_SMEM
 	select QCOM_SMEM_STATE
+	select IRQ_DOMAIN
 	help
 	  Say yes here to support the Qualcomm Shared Memory Point to Point
 	  protocol.
@@ -142,13 +144,14 @@ config QCOM_SMSM
 	tristate "Qualcomm Shared Memory State Machine"
 	depends on QCOM_SMEM
 	select QCOM_SMEM_STATE
+	select IRQ_DOMAIN
 	help
 	  Say yes here to support the Qualcomm Shared Memory State Machine.
 	  The state machine is represented by bits in shared memory.
 
 config QCOM_WCNSS_CTRL
 	tristate "Qualcomm WCNSS control driver"
-	depends on ARCH_QCOM
+	depends on ARCH_QCOM || COMPILE_TEST
 	depends on RPMSG
 	help
 	  Client driver for the WCNSS_CTRL SMD channel, used to download nv
@@ -156,7 +159,7 @@ config QCOM_WCNSS_CTRL
 
 config QCOM_APR
 	tristate "Qualcomm APR Bus (Asynchronous Packet Router)"
-	depends on ARCH_QCOM
+	depends on ARCH_QCOM || COMPILE_TEST
 	depends on RPMSG
 	help
           Enable APR IPC protocol support between
diff --git a/drivers/soc/qcom/apr.c b/drivers/soc/qcom/apr.c
index 57af8a537332..716762d59c1f 100644
--- a/drivers/soc/qcom/apr.c
+++ b/drivers/soc/qcom/apr.c
@@ -87,7 +87,7 @@ static int apr_callback(struct rpmsg_device *rpdev, void *buf,
 	}
 
 	if (hdr->pkt_size < APR_HDR_SIZE || hdr->pkt_size != len) {
-		dev_err(apr->dev, "APR: Wrong paket size\n");
+		dev_err(apr->dev, "APR: Wrong packet size\n");
 		return -EINVAL;
 	}
 
@@ -219,9 +219,9 @@ static int apr_add_device(struct device *dev, struct device_node *np,
 	adev->domain_id = id->domain_id;
 	adev->version = id->svc_version;
 	if (np)
-		strncpy(adev->name, np->name, APR_NAME_SIZE);
+		strscpy(adev->name, np->name, APR_NAME_SIZE);
 	else
-		strncpy(adev->name, id->name, APR_NAME_SIZE);
+		strscpy(adev->name, id->name, APR_NAME_SIZE);
 
 	dev_set_name(&adev->dev, "aprsvc:%s:%x:%x", adev->name,
 		     id->domain_id, id->svc_id);
diff --git a/drivers/soc/qcom/llcc-slice.c b/drivers/soc/qcom/llcc-slice.c
index 54063a31132f..192ca761b2cb 100644
--- a/drivers/soc/qcom/llcc-slice.c
+++ b/drivers/soc/qcom/llcc-slice.c
@@ -13,6 +13,7 @@
 #include <linux/mutex.h>
 #include <linux/of_device.h>
 #include <linux/regmap.h>
+#include <linux/sizes.h>
 #include <linux/slab.h>
 #include <linux/soc/qcom/llcc-qcom.h>
 
@@ -106,22 +107,24 @@ static int llcc_update_act_ctrl(u32 sid,
 	u32 slice_status;
 	int ret;
 
-	act_ctrl_reg = drv_data->bcast_off + LLCC_TRP_ACT_CTRLn(sid);
-	status_reg = drv_data->bcast_off + LLCC_TRP_STATUSn(sid);
+	act_ctrl_reg = LLCC_TRP_ACT_CTRLn(sid);
+	status_reg = LLCC_TRP_STATUSn(sid);
 
 	/* Set the ACTIVE trigger */
 	act_ctrl_reg_val |= ACT_CTRL_ACT_TRIG;
-	ret = regmap_write(drv_data->regmap, act_ctrl_reg, act_ctrl_reg_val);
+	ret = regmap_write(drv_data->bcast_regmap, act_ctrl_reg,
+				act_ctrl_reg_val);
 	if (ret)
 		return ret;
 
 	/* Clear the ACTIVE trigger */
 	act_ctrl_reg_val &= ~ACT_CTRL_ACT_TRIG;
-	ret = regmap_write(drv_data->regmap, act_ctrl_reg, act_ctrl_reg_val);
+	ret = regmap_write(drv_data->bcast_regmap, act_ctrl_reg,
+				act_ctrl_reg_val);
 	if (ret)
 		return ret;
 
-	ret = regmap_read_poll_timeout(drv_data->regmap, status_reg,
+	ret = regmap_read_poll_timeout(drv_data->bcast_regmap, status_reg,
 				      slice_status, !(slice_status & status),
 				      0, LLCC_STATUS_READ_DELAY);
 	return ret;
@@ -223,19 +226,16 @@ static int qcom_llcc_cfg_program(struct platform_device *pdev)
 	u32 attr0_val;
 	u32 max_cap_cacheline;
 	u32 sz;
-	int ret;
+	int ret = 0;
 	const struct llcc_slice_config *llcc_table;
 	struct llcc_slice_desc desc;
-	u32 bcast_off = drv_data->bcast_off;
 
 	sz = drv_data->cfg_size;
 	llcc_table = drv_data->cfg;
 
 	for (i = 0; i < sz; i++) {
-		attr1_cfg = bcast_off +
-				LLCC_TRP_ATTR1_CFGn(llcc_table[i].slice_id);
-		attr0_cfg = bcast_off +
-				LLCC_TRP_ATTR0_CFGn(llcc_table[i].slice_id);
+		attr1_cfg = LLCC_TRP_ATTR1_CFGn(llcc_table[i].slice_id);
+		attr0_cfg = LLCC_TRP_ATTR0_CFGn(llcc_table[i].slice_id);
 
 		attr1_val = llcc_table[i].cache_mode;
 		attr1_val |= llcc_table[i].probe_target_ways <<
@@ -260,10 +260,12 @@ static int qcom_llcc_cfg_program(struct platform_device *pdev)
 		attr0_val = llcc_table[i].res_ways & ATTR0_RES_WAYS_MASK;
 		attr0_val |= llcc_table[i].bonus_ways << ATTR0_BONUS_WAYS_SHIFT;
 
-		ret = regmap_write(drv_data->regmap, attr1_cfg, attr1_val);
+		ret = regmap_write(drv_data->bcast_regmap, attr1_cfg,
+					attr1_val);
 		if (ret)
 			return ret;
-		ret = regmap_write(drv_data->regmap, attr0_cfg, attr0_val);
+		ret = regmap_write(drv_data->bcast_regmap, attr0_cfg,
+					attr0_val);
 		if (ret)
 			return ret;
 		if (llcc_table[i].activate_on_init) {
@@ -279,24 +281,37 @@ int qcom_llcc_probe(struct platform_device *pdev,
 {
 	u32 num_banks;
 	struct device *dev = &pdev->dev;
-	struct resource *res;
-	void __iomem *base;
+	struct resource *llcc_banks_res, *llcc_bcast_res;
+	void __iomem *llcc_banks_base, *llcc_bcast_base;
 	int ret, i;
+	struct platform_device *llcc_edac;
 
 	drv_data = devm_kzalloc(dev, sizeof(*drv_data), GFP_KERNEL);
 	if (!drv_data)
 		return -ENOMEM;
 
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	base = devm_ioremap_resource(&pdev->dev, res);
-	if (IS_ERR(base))
-		return PTR_ERR(base);
+	llcc_banks_res = platform_get_resource_byname(pdev, IORESOURCE_MEM,
+							"llcc_base");
+	llcc_banks_base = devm_ioremap_resource(&pdev->dev, llcc_banks_res);
+	if (IS_ERR(llcc_banks_base))
+		return PTR_ERR(llcc_banks_base);
 
-	drv_data->regmap = devm_regmap_init_mmio(dev, base,
-					&llcc_regmap_config);
+	drv_data->regmap = devm_regmap_init_mmio(dev, llcc_banks_base,
+						&llcc_regmap_config);
 	if (IS_ERR(drv_data->regmap))
 		return PTR_ERR(drv_data->regmap);
 
+	llcc_bcast_res = platform_get_resource_byname(pdev, IORESOURCE_MEM,
+							"llcc_broadcast_base");
+	llcc_bcast_base = devm_ioremap_resource(&pdev->dev, llcc_bcast_res);
+	if (IS_ERR(llcc_bcast_base))
+		return PTR_ERR(llcc_bcast_base);
+
+	drv_data->bcast_regmap = devm_regmap_init_mmio(dev, llcc_bcast_base,
+							&llcc_regmap_config);
+	if (IS_ERR(drv_data->bcast_regmap))
+		return PTR_ERR(drv_data->bcast_regmap);
+
 	ret = regmap_read(drv_data->regmap, LLCC_COMMON_STATUS0,
 						&num_banks);
 	if (ret)
@@ -318,8 +333,6 @@ int qcom_llcc_probe(struct platform_device *pdev,
 	for (i = 0; i < num_banks; i++)
 		drv_data->offsets[i] = i * BANK_OFFSET_STRIDE;
 
-	drv_data->bcast_off = num_banks * BANK_OFFSET_STRIDE;
-
 	drv_data->bitmap = devm_kcalloc(dev,
 	BITS_TO_LONGS(drv_data->max_slices), sizeof(unsigned long),
 						GFP_KERNEL);
@@ -331,7 +344,20 @@ int qcom_llcc_probe(struct platform_device *pdev,
 	mutex_init(&drv_data->lock);
 	platform_set_drvdata(pdev, drv_data);
 
-	return qcom_llcc_cfg_program(pdev);
+	ret = qcom_llcc_cfg_program(pdev);
+	if (ret)
+		return ret;
+
+	drv_data->ecc_irq = platform_get_irq(pdev, 0);
+	if (drv_data->ecc_irq >= 0) {
+		llcc_edac = platform_device_register_data(&pdev->dev,
+						"qcom_llcc_edac", -1, drv_data,
+						sizeof(*drv_data));
+		if (IS_ERR(llcc_edac))
+			dev_err(dev, "Failed to register llcc edac driver\n");
+	}
+
+	return ret;
 }
 EXPORT_SYMBOL_GPL(qcom_llcc_probe);
 
diff --git a/drivers/soc/qcom/qcom-geni-se.c b/drivers/soc/qcom/qcom-geni-se.c
index feed3db21c10..ee89ffb6dde8 100644
--- a/drivers/soc/qcom/qcom-geni-se.c
+++ b/drivers/soc/qcom/qcom-geni-se.c
@@ -513,7 +513,7 @@ EXPORT_SYMBOL(geni_se_resources_on);
  */
 int geni_se_clk_tbl_get(struct geni_se *se, unsigned long **tbl)
 {
-	unsigned long freq = 0;
+	long freq = 0;
 	int i;
 
 	if (se->clk_perf_tbl) {
@@ -529,7 +529,7 @@ int geni_se_clk_tbl_get(struct geni_se *se, unsigned long **tbl)
 
 	for (i = 0; i < MAX_CLK_PERF_LEVEL; i++) {
 		freq = clk_round_rate(se->clk, freq + 1);
-		if (!freq || freq == se->clk_perf_tbl[i - 1])
+		if (freq <= 0 || freq == se->clk_perf_tbl[i - 1])
 			break;
 		se->clk_perf_tbl[i] = freq;
 	}
@@ -544,16 +544,17 @@ EXPORT_SYMBOL(geni_se_clk_tbl_get);
  * @se:		Pointer to the concerned serial engine.
  * @req_freq:	Requested clock frequency.
  * @index:	Index of the resultant frequency in the table.
- * @res_freq:	Resultant frequency which matches or is closer to the
- *		requested frequency.
+ * @res_freq:	Resultant frequency of the source clock.
  * @exact:	Flag to indicate exact multiple requirement of the requested
  *		frequency.
  *
- * This function is called by the protocol drivers to determine the matching
- * or exact multiple of the requested frequency, as provided by the serial
- * engine clock in order to meet the performance requirements. If there is
- * no matching or exact multiple of the requested frequency found, then it
- * selects the closest floor frequency, if exact flag is not set.
+ * This function is called by the protocol drivers to determine the best match
+ * of the requested frequency as provided by the serial engine clock in order
+ * to meet the performance requirements.
+ *
+ * If we return success:
+ * - if @exact is true  then @res_freq / <an_integer> == @req_freq
+ * - if @exact is false then @res_freq / <an_integer> <= @req_freq
  *
  * Return: 0 on success, standard Linux error codes on failure.
  */
@@ -564,6 +565,9 @@ int geni_se_clk_freq_match(struct geni_se *se, unsigned long req_freq,
 	unsigned long *tbl;
 	int num_clk_levels;
 	int i;
+	unsigned long best_delta;
+	unsigned long new_delta;
+	unsigned int divider;
 
 	num_clk_levels = geni_se_clk_tbl_get(se, &tbl);
 	if (num_clk_levels < 0)
@@ -572,18 +576,21 @@ int geni_se_clk_freq_match(struct geni_se *se, unsigned long req_freq,
 	if (num_clk_levels == 0)
 		return -EINVAL;
 
-	*res_freq = 0;
+	best_delta = ULONG_MAX;
 	for (i = 0; i < num_clk_levels; i++) {
-		if (!(tbl[i] % req_freq)) {
+		divider = DIV_ROUND_UP(tbl[i], req_freq);
+		new_delta = req_freq - tbl[i] / divider;
+		if (new_delta < best_delta) {
+			/* We have a new best! */
 			*index = i;
 			*res_freq = tbl[i];
-			return 0;
-		}
 
-		if (!(*res_freq) || ((tbl[i] > *res_freq) &&
-				     (tbl[i] < req_freq))) {
-			*index = i;
-			*res_freq = tbl[i];
+			/* If the new best is exact then we're done */
+			if (new_delta == 0)
+				return 0;
+
+			/* Record how close we got */
+			best_delta = new_delta;
 		}
 	}
 
diff --git a/drivers/soc/qcom/rmtfs_mem.c b/drivers/soc/qcom/rmtfs_mem.c
index 8a3678c2e83c..97bb5989aa21 100644
--- a/drivers/soc/qcom/rmtfs_mem.c
+++ b/drivers/soc/qcom/rmtfs_mem.c
@@ -212,6 +212,11 @@ static int qcom_rmtfs_mem_probe(struct platform_device *pdev)
 		dev_err(&pdev->dev, "failed to parse qcom,vmid\n");
 		goto remove_cdev;
 	} else if (!ret) {
+		if (!qcom_scm_is_available()) {
+			ret = -EPROBE_DEFER;
+			goto remove_cdev;
+		}
+
 		perms[0].vmid = QCOM_SCM_VMID_HLOS;
 		perms[0].perm = QCOM_SCM_PERM_RW;
 		perms[1].vmid = vmid;
diff --git a/drivers/soc/qcom/rpmh-rsc.c b/drivers/soc/qcom/rpmh-rsc.c
index ee75da66d64b..75bd9a83aef0 100644
--- a/drivers/soc/qcom/rpmh-rsc.c
+++ b/drivers/soc/qcom/rpmh-rsc.c
@@ -121,6 +121,7 @@ static int tcs_invalidate(struct rsc_drv *drv, int type)
 			return -EAGAIN;
 		}
 		write_tcs_reg_sync(drv, RSC_DRV_CMD_ENABLE, m, 0);
+		write_tcs_reg_sync(drv, RSC_DRV_CMD_WAIT_FOR_CMPL, m, 0);
 	}
 	bitmap_zero(tcs->slots, MAX_TCS_SLOTS);
 	spin_unlock(&tcs->lock);
@@ -239,6 +240,7 @@ static irqreturn_t tcs_tx_done(int irq, void *p)
 skip:
 		/* Reclaim the TCS */
 		write_tcs_reg(drv, RSC_DRV_CMD_ENABLE, i, 0);
+		write_tcs_reg(drv, RSC_DRV_CMD_WAIT_FOR_CMPL, i, 0);
 		write_tcs_reg(drv, RSC_DRV_IRQ_CLEAR, 0, BIT(i));
 		spin_lock(&drv->lock);
 		clear_bit(i, drv->tcs_in_use);
diff --git a/drivers/soc/qcom/smem.c b/drivers/soc/qcom/smem.c
index bf4bd71ab53f..f80d040601fd 100644
--- a/drivers/soc/qcom/smem.c
+++ b/drivers/soc/qcom/smem.c
@@ -18,6 +18,7 @@
 #include <linux/of.h>
 #include <linux/of_address.h>
 #include <linux/platform_device.h>
+#include <linux/sizes.h>
 #include <linux/slab.h>
 #include <linux/soc/qcom/smem.h>
 
@@ -277,7 +278,7 @@ struct qcom_smem {
 	u32 item_count;
 
 	unsigned num_regions;
-	struct smem_region regions[0];
+	struct smem_region regions[];
 };
 
 static void *
@@ -489,7 +490,7 @@ static void *qcom_smem_get_global(struct qcom_smem *smem,
 				  size_t *size)
 {
 	struct smem_header *header;
-	struct smem_region *area;
+	struct smem_region *region;
 	struct smem_global_entry *entry;
 	u32 aux_base;
 	unsigned i;
@@ -502,12 +503,12 @@ static void *qcom_smem_get_global(struct qcom_smem *smem,
 	aux_base = le32_to_cpu(entry->aux_base) & AUX_BASE_MASK;
 
 	for (i = 0; i < smem->num_regions; i++) {
-		area = &smem->regions[i];
+		region = &smem->regions[i];
 
-		if (area->aux_base == aux_base || !aux_base) {
+		if (region->aux_base == aux_base || !aux_base) {
 			if (size != NULL)
 				*size = le32_to_cpu(entry->size);
-			return area->virt_base + le32_to_cpu(entry->offset);
+			return region->virt_base + le32_to_cpu(entry->offset);
 		}
 	}
 
@@ -722,12 +723,59 @@ static u32 qcom_smem_get_item_count(struct qcom_smem *smem)
 	return le16_to_cpu(info->num_items);
 }
 
+/*
+ * Validate the partition header for a partition whose partition
+ * table entry is supplied.  Returns a pointer to its header if
+ * valid, or a null pointer otherwise.
+ */
+static struct smem_partition_header *
+qcom_smem_partition_header(struct qcom_smem *smem,
+		struct smem_ptable_entry *entry, u16 host0, u16 host1)
+{
+	struct smem_partition_header *header;
+	u32 size;
+
+	header = smem->regions[0].virt_base + le32_to_cpu(entry->offset);
+
+	if (memcmp(header->magic, SMEM_PART_MAGIC, sizeof(header->magic))) {
+		dev_err(smem->dev, "bad partition magic %02x %02x %02x %02x\n",
+			header->magic[0], header->magic[1],
+			header->magic[2], header->magic[3]);
+		return NULL;
+	}
+
+	if (host0 != le16_to_cpu(header->host0)) {
+		dev_err(smem->dev, "bad host0 (%hu != %hu)\n",
+				host0, le16_to_cpu(header->host0));
+		return NULL;
+	}
+	if (host1 != le16_to_cpu(header->host1)) {
+		dev_err(smem->dev, "bad host1 (%hu != %hu)\n",
+				host1, le16_to_cpu(header->host1));
+		return NULL;
+	}
+
+	size = le32_to_cpu(header->size);
+	if (size != le32_to_cpu(entry->size)) {
+		dev_err(smem->dev, "bad partition size (%u != %u)\n",
+			size, le32_to_cpu(entry->size));
+		return NULL;
+	}
+
+	if (le32_to_cpu(header->offset_free_uncached) > size) {
+		dev_err(smem->dev, "bad partition free uncached (%u > %u)\n",
+			le32_to_cpu(header->offset_free_uncached), size);
+		return NULL;
+	}
+
+	return header;
+}
+
 static int qcom_smem_set_global_partition(struct qcom_smem *smem)
 {
 	struct smem_partition_header *header;
 	struct smem_ptable_entry *entry;
 	struct smem_ptable *ptable;
-	u32 host0, host1, size;
 	bool found = false;
 	int i;
 
@@ -742,10 +790,15 @@ static int qcom_smem_set_global_partition(struct qcom_smem *smem)
 
 	for (i = 0; i < le32_to_cpu(ptable->num_entries); i++) {
 		entry = &ptable->entry[i];
-		host0 = le16_to_cpu(entry->host0);
-		host1 = le16_to_cpu(entry->host1);
+		if (!le32_to_cpu(entry->offset))
+			continue;
+		if (!le32_to_cpu(entry->size))
+			continue;
+
+		if (le16_to_cpu(entry->host0) != SMEM_GLOBAL_HOST)
+			continue;
 
-		if (host0 == SMEM_GLOBAL_HOST && host0 == host1) {
+		if (le16_to_cpu(entry->host1) == SMEM_GLOBAL_HOST) {
 			found = true;
 			break;
 		}
@@ -756,36 +809,10 @@ static int qcom_smem_set_global_partition(struct qcom_smem *smem)
 		return -EINVAL;
 	}
 
-	if (!le32_to_cpu(entry->offset) || !le32_to_cpu(entry->size)) {
-		dev_err(smem->dev, "Invalid entry for global partition\n");
+	header = qcom_smem_partition_header(smem, entry,
+				SMEM_GLOBAL_HOST, SMEM_GLOBAL_HOST);
+	if (!header)
 		return -EINVAL;
-	}
-
-	header = smem->regions[0].virt_base + le32_to_cpu(entry->offset);
-	host0 = le16_to_cpu(header->host0);
-	host1 = le16_to_cpu(header->host1);
-
-	if (memcmp(header->magic, SMEM_PART_MAGIC, sizeof(header->magic))) {
-		dev_err(smem->dev, "Global partition has invalid magic\n");
-		return -EINVAL;
-	}
-
-	if (host0 != SMEM_GLOBAL_HOST && host1 != SMEM_GLOBAL_HOST) {
-		dev_err(smem->dev, "Global partition hosts are invalid\n");
-		return -EINVAL;
-	}
-
-	if (le32_to_cpu(header->size) != le32_to_cpu(entry->size)) {
-		dev_err(smem->dev, "Global partition has invalid size\n");
-		return -EINVAL;
-	}
-
-	size = le32_to_cpu(header->offset_free_uncached);
-	if (size > le32_to_cpu(header->size)) {
-		dev_err(smem->dev,
-			"Global partition has invalid free pointer\n");
-		return -EINVAL;
-	}
 
 	smem->global_partition = header;
 	smem->global_cacheline = le32_to_cpu(entry->cacheline);
@@ -793,14 +820,14 @@ static int qcom_smem_set_global_partition(struct qcom_smem *smem)
 	return 0;
 }
 
-static int qcom_smem_enumerate_partitions(struct qcom_smem *smem,
-					  unsigned int local_host)
+static int
+qcom_smem_enumerate_partitions(struct qcom_smem *smem, u16 local_host)
 {
 	struct smem_partition_header *header;
 	struct smem_ptable_entry *entry;
 	struct smem_ptable *ptable;
 	unsigned int remote_host;
-	u32 host0, host1;
+	u16 host0, host1;
 	int i;
 
 	ptable = qcom_smem_get_ptable(smem);
@@ -809,71 +836,33 @@ static int qcom_smem_enumerate_partitions(struct qcom_smem *smem,
 
 	for (i = 0; i < le32_to_cpu(ptable->num_entries); i++) {
 		entry = &ptable->entry[i];
-		host0 = le16_to_cpu(entry->host0);
-		host1 = le16_to_cpu(entry->host1);
-
-		if (host0 != local_host && host1 != local_host)
-			continue;
-
 		if (!le32_to_cpu(entry->offset))
 			continue;
-
 		if (!le32_to_cpu(entry->size))
 			continue;
 
+		host0 = le16_to_cpu(entry->host0);
+		host1 = le16_to_cpu(entry->host1);
 		if (host0 == local_host)
 			remote_host = host1;
-		else
+		else if (host1 == local_host)
 			remote_host = host0;
+		else
+			continue;
 
 		if (remote_host >= SMEM_HOST_COUNT) {
-			dev_err(smem->dev,
-				"Invalid remote host %d\n",
-				remote_host);
+			dev_err(smem->dev, "bad host %hu\n", remote_host);
 			return -EINVAL;
 		}
 
 		if (smem->partitions[remote_host]) {
-			dev_err(smem->dev,
-				"Already found a partition for host %d\n",
-				remote_host);
-			return -EINVAL;
-		}
-
-		header = smem->regions[0].virt_base + le32_to_cpu(entry->offset);
-		host0 = le16_to_cpu(header->host0);
-		host1 = le16_to_cpu(header->host1);
-
-		if (memcmp(header->magic, SMEM_PART_MAGIC,
-			    sizeof(header->magic))) {
-			dev_err(smem->dev,
-				"Partition %d has invalid magic\n", i);
+			dev_err(smem->dev, "duplicate host %hu\n", remote_host);
 			return -EINVAL;
 		}
 
-		if (host0 != local_host && host1 != local_host) {
-			dev_err(smem->dev,
-				"Partition %d hosts are invalid\n", i);
+		header = qcom_smem_partition_header(smem, entry, host0, host1);
+		if (!header)
 			return -EINVAL;
-		}
-
-		if (host0 != remote_host && host1 != remote_host) {
-			dev_err(smem->dev,
-				"Partition %d hosts are invalid\n", i);
-			return -EINVAL;
-		}
-
-		if (le32_to_cpu(header->size) != le32_to_cpu(entry->size)) {
-			dev_err(smem->dev,
-				"Partition %d has invalid size\n", i);
-			return -EINVAL;
-		}
-
-		if (le32_to_cpu(header->offset_free_uncached) > le32_to_cpu(header->size)) {
-			dev_err(smem->dev,
-				"Partition %d has invalid free pointer\n", i);
-			return -EINVAL;
-		}
 
 		smem->partitions[remote_host] = header;
 		smem->cacheline[remote_host] = le32_to_cpu(entry->cacheline);
@@ -887,6 +876,7 @@ static int qcom_smem_map_memory(struct qcom_smem *smem, struct device *dev,
 {
 	struct device_node *np;
 	struct resource r;
+	resource_size_t size;
 	int ret;
 
 	np = of_parse_phandle(dev->of_node, name, 0);
@@ -899,12 +889,13 @@ static int qcom_smem_map_memory(struct qcom_smem *smem, struct device *dev,
 	of_node_put(np);
 	if (ret)
 		return ret;
+	size = resource_size(&r);
 
-	smem->regions[i].aux_base = (u32)r.start;
-	smem->regions[i].size = resource_size(&r);
-	smem->regions[i].virt_base = devm_ioremap_wc(dev, r.start, resource_size(&r));
+	smem->regions[i].virt_base = devm_ioremap_wc(dev, r.start, size);
 	if (!smem->regions[i].virt_base)
 		return -ENOMEM;
+	smem->regions[i].aux_base = (u32)r.start;
+	smem->regions[i].size = size;
 
 	return 0;
 }
@@ -962,6 +953,7 @@ static int qcom_smem_probe(struct platform_device *pdev)
 		return -EINVAL;
 	}
 
+	BUILD_BUG_ON(SMEM_HOST_APPS >= SMEM_HOST_COUNT);
 	ret = qcom_smem_enumerate_partitions(smem, SMEM_HOST_APPS);
 	if (ret < 0 && ret != -ENOENT)
 		return ret;
diff --git a/drivers/soc/qcom/spm.c b/drivers/soc/qcom/spm.c
index f9d7a85b2822..53807e839664 100644
--- a/drivers/soc/qcom/spm.c
+++ b/drivers/soc/qcom/spm.c
@@ -219,6 +219,9 @@ static int __init qcom_cpuidle_init(struct device_node *cpu_node, int cpu)
 	cpumask_t mask;
 	bool use_scm_power_down = false;
 
+	if (!qcom_scm_is_available())
+		return -EPROBE_DEFER;
+
 	for (i = 0; ; i++) {
 		state_node = of_parse_phandle(cpu_node, "cpu-idle-states", i);
 		if (!state_node)
diff --git a/drivers/soc/qcom/wcnss_ctrl.c b/drivers/soc/qcom/wcnss_ctrl.c
index df3ccb30bc2d..373400dd816d 100644
--- a/drivers/soc/qcom/wcnss_ctrl.c
+++ b/drivers/soc/qcom/wcnss_ctrl.c
@@ -281,7 +281,7 @@ struct rpmsg_endpoint *qcom_wcnss_open_channel(void *wcnss, const char *name, rp
 	struct rpmsg_channel_info chinfo;
 	struct wcnss_ctrl *_wcnss = wcnss;
 
-	strncpy(chinfo.name, name, sizeof(chinfo.name));
+	strscpy(chinfo.name, name, sizeof(chinfo.name));
 	chinfo.src = RPMSG_ADDR_ANY;
 	chinfo.dst = RPMSG_ADDR_ANY;