16 files changed, 81 insertions, 72 deletions

diff --git a/drivers/firmware/arm_ffa/driver.c b/drivers/firmware/arm_ffa/driver.c
index 4d231bc375e0..b14cbdae94e8 100644
--- a/drivers/firmware/arm_ffa/driver.c
+++ b/drivers/firmware/arm_ffa/driver.c
@@ -481,11 +481,16 @@ static int ffa_msg_send_direct_req2(u16 src_id, u16 dst_id, const uuid_t *uuid,
 				    struct ffa_send_direct_data2 *data)
 {
 	u32 src_dst_ids = PACK_TARGET_INFO(src_id, dst_id);
+	union {
+		uuid_t uuid;
+		__le64 regs[2];
+	} uuid_regs = { .uuid = *uuid };
 	ffa_value_t ret, args = {
-		.a0 = FFA_MSG_SEND_DIRECT_REQ2, .a1 = src_dst_ids,
+		.a0 = FFA_MSG_SEND_DIRECT_REQ2,
+		.a1 = src_dst_ids,
+		.a2 = le64_to_cpu(uuid_regs.regs[0]),
+		.a3 = le64_to_cpu(uuid_regs.regs[1]),
 	};
-
-	export_uuid((u8 *)&args.a2, uuid);
 	memcpy((void *)&args + offsetof(ffa_value_t, a4), data, sizeof(*data));
 
 	invoke_ffa_fn(args, &ret);
@@ -496,7 +501,7 @@ static int ffa_msg_send_direct_req2(u16 src_id, u16 dst_id, const uuid_t *uuid,
 		return ffa_to_linux_errno((int)ret.a2);
 
 	if (ret.a0 == FFA_MSG_SEND_DIRECT_RESP2) {
-		memcpy(data, &ret.a4, sizeof(*data));
+		memcpy(data, (void *)&ret + offsetof(ffa_value_t, a4), sizeof(*data));
 		return 0;
 	}
 
diff --git a/drivers/firmware/arm_scmi/bus.c b/drivers/firmware/arm_scmi/bus.c
index 96b2e5f9a8ef..157172a5f2b5 100644
--- a/drivers/firmware/arm_scmi/bus.c
+++ b/drivers/firmware/arm_scmi/bus.c
@@ -325,7 +325,10 @@ EXPORT_SYMBOL_GPL(scmi_driver_unregister);
 
 static void scmi_device_release(struct device *dev)
 {
-	kfree(to_scmi_dev(dev));
+	struct scmi_device *scmi_dev = to_scmi_dev(dev);
+
+	kfree_const(scmi_dev->name);
+	kfree(scmi_dev);
 }
 
 static void __scmi_device_destroy(struct scmi_device *scmi_dev)
@@ -338,7 +341,6 @@ static void __scmi_device_destroy(struct scmi_device *scmi_dev)
 	if (scmi_dev->protocol_id == SCMI_PROTOCOL_SYSTEM)
 		atomic_set(&scmi_syspower_registered, 0);
 
-	kfree_const(scmi_dev->name);
 	ida_free(&scmi_bus_id, scmi_dev->id);
 	device_unregister(&scmi_dev->dev);
 }
@@ -410,7 +412,6 @@ __scmi_device_create(struct device_node *np, struct device *parent,
 
 	return scmi_dev;
 put_dev:
-	kfree_const(scmi_dev->name);
 	put_device(&scmi_dev->dev);
 	ida_free(&scmi_bus_id, id);
 	return NULL;
diff --git a/drivers/firmware/arm_scmi/common.h b/drivers/firmware/arm_scmi/common.h
index 6d9227db473f..cdec50a698a1 100644
--- a/drivers/firmware/arm_scmi/common.h
+++ b/drivers/firmware/arm_scmi/common.h
@@ -22,7 +22,7 @@
 #include <linux/spinlock.h>
 #include <linux/types.h>
 
-#include <asm/unaligned.h>
+#include <linux/unaligned.h>
 
 #include "protocols.h"
 #include "notify.h"
@@ -163,6 +163,7 @@ void scmi_protocol_release(const struct scmi_handle *handle, u8 protocol_id);
  *      used to initialize this channel
  * @dev: Reference to device in the SCMI hierarchy corresponding to this
  *	 channel
+ * @is_p2a: A flag to identify a channel as P2A (RX)
  * @rx_timeout_ms: The configured RX timeout in milliseconds.
  * @handle: Pointer to SCMI entity handle
  * @no_completion_irq: Flag to indicate that this channel has no completion
@@ -174,6 +175,7 @@ void scmi_protocol_release(const struct scmi_handle *handle, u8 protocol_id);
 struct scmi_chan_info {
 	int id;
 	struct device *dev;
+	bool is_p2a;
 	unsigned int rx_timeout_ms;
 	struct scmi_handle *handle;
 	bool no_completion_irq;
diff --git a/drivers/firmware/arm_scmi/driver.c b/drivers/firmware/arm_scmi/driver.c
index 88c5c4ff4bb6..f8934d049d68 100644
--- a/drivers/firmware/arm_scmi/driver.c
+++ b/drivers/firmware/arm_scmi/driver.c
@@ -1048,6 +1048,11 @@ static inline void scmi_xfer_command_release(struct scmi_info *info,
 static inline void scmi_clear_channel(struct scmi_info *info,
 				      struct scmi_chan_info *cinfo)
 {
+	if (!cinfo->is_p2a) {
+		dev_warn(cinfo->dev, "Invalid clear on A2P channel !\n");
+		return;
+	}
+
 	if (info->desc->ops->clear_channel)
 		info->desc->ops->clear_channel(cinfo);
 }
@@ -2638,6 +2643,7 @@ static int scmi_chan_setup(struct scmi_info *info, struct device_node *of_node,
 	if (!cinfo)
 		return -ENOMEM;
 
+	cinfo->is_p2a = !tx;
 	cinfo->rx_timeout_ms = info->desc->max_rx_timeout_ms;
 
 	/* Create a unique name for this transport device */
@@ -2976,10 +2982,8 @@ static struct scmi_debug_info *scmi_debugfs_common_setup(struct scmi_info *info)
 	dbg->top_dentry = top_dentry;
 
 	if (devm_add_action_or_reset(info->dev,
-				     scmi_debugfs_common_cleanup, dbg)) {
-		scmi_debugfs_common_cleanup(dbg);
+				     scmi_debugfs_common_cleanup, dbg))
 		return NULL;
-	}
 
 	return dbg;
 }
@@ -3044,10 +3048,10 @@ static const struct scmi_desc *scmi_transport_setup(struct device *dev)
 
 	dev_info(dev, "Using %s\n", dev_driver_string(trans->supplier));
 
-	ret = of_property_read_u32(dev->of_node, "max-rx-timeout-ms",
+	ret = of_property_read_u32(dev->of_node, "arm,max-rx-timeout-ms",
 				   &trans->desc->max_rx_timeout_ms);
 	if (ret && ret != -EINVAL)
-		dev_err(dev, "Malformed max-rx-timeout-ms DT property.\n");
+		dev_err(dev, "Malformed arm,max-rx-timeout-ms DT property.\n");
 
 	dev_info(dev, "SCMI max-rx-timeout: %dms\n",
 		 trans->desc->max_rx_timeout_ms);
diff --git a/drivers/firmware/arm_scmi/protocols.h b/drivers/firmware/arm_scmi/protocols.h
index 8e95f53bd7b7..aaee57cdcd55 100644
--- a/drivers/firmware/arm_scmi/protocols.h
+++ b/drivers/firmware/arm_scmi/protocols.h
@@ -22,7 +22,7 @@
 #include <linux/spinlock.h>
 #include <linux/types.h>
 
-#include <asm/unaligned.h>
+#include <linux/unaligned.h>
 
 #define PROTOCOL_REV_MINOR_MASK	GENMASK(15, 0)
 #define PROTOCOL_REV_MAJOR_MASK	GENMASK(31, 16)
diff --git a/drivers/firmware/arm_scmi/transports/Makefile b/drivers/firmware/arm_scmi/transports/Makefile
index 362a406f08e6..3ba3d3bee151 100644
--- a/drivers/firmware/arm_scmi/transports/Makefile
+++ b/drivers/firmware/arm_scmi/transports/Makefile
@@ -1,8 +1,10 @@
 # SPDX-License-Identifier: GPL-2.0-only
-scmi_transport_mailbox-objs := mailbox.o
-obj-$(CONFIG_ARM_SCMI_TRANSPORT_MAILBOX) += scmi_transport_mailbox.o
+# Keep before scmi_transport_mailbox.o to allow precedence
+# while matching the compatible.
 scmi_transport_smc-objs := smc.o
 obj-$(CONFIG_ARM_SCMI_TRANSPORT_SMC) += scmi_transport_smc.o
+scmi_transport_mailbox-objs := mailbox.o
+obj-$(CONFIG_ARM_SCMI_TRANSPORT_MAILBOX) += scmi_transport_mailbox.o
 scmi_transport_optee-objs := optee.o
 obj-$(CONFIG_ARM_SCMI_TRANSPORT_OPTEE) += scmi_transport_optee.o
 scmi_transport_virtio-objs := virtio.o
diff --git a/drivers/firmware/arm_scmi/transports/mailbox.c b/drivers/firmware/arm_scmi/transports/mailbox.c
index 1a754dee24f7..e3d5f7560990 100644
--- a/drivers/firmware/arm_scmi/transports/mailbox.c
+++ b/drivers/firmware/arm_scmi/transports/mailbox.c
@@ -25,6 +25,7 @@
  * @chan_platform_receiver: Optional Platform Receiver mailbox unidirectional channel
  * @cinfo: SCMI channel info
  * @shmem: Transmit/Receive shared memory area
+ * @chan_lock: Lock that prevents multiple xfers from being queued
  */
 struct scmi_mailbox {
 	struct mbox_client cl;
@@ -33,6 +34,7 @@ struct scmi_mailbox {
 	struct mbox_chan *chan_platform_receiver;
 	struct scmi_chan_info *cinfo;
 	struct scmi_shared_mem __iomem *shmem;
+	struct mutex chan_lock;
 };
 
 #define client_to_scmi_mailbox(c) container_of(c, struct scmi_mailbox, cl)
@@ -238,6 +240,7 @@ static int mailbox_chan_setup(struct scmi_chan_info *cinfo, struct device *dev,
 
 	cinfo->transport_info = smbox;
 	smbox->cinfo = cinfo;
+	mutex_init(&smbox->chan_lock);
 
 	return 0;
 }
@@ -267,13 +270,23 @@ static int mailbox_send_message(struct scmi_chan_info *cinfo,
 	struct scmi_mailbox *smbox = cinfo->transport_info;
 	int ret;
 
-	ret = mbox_send_message(smbox->chan, xfer);
+	/*
+	 * The mailbox layer has its own queue. However the mailbox queue
+	 * confuses the per message SCMI timeouts since the clock starts when
+	 * the message is submitted into the mailbox queue. So when multiple
+	 * messages are queued up the clock starts on all messages instead of
+	 * only the one inflight.
+	 */
+	mutex_lock(&smbox->chan_lock);
 
-	/* mbox_send_message returns non-negative value on success, so reset */
-	if (ret > 0)
-		ret = 0;
+	ret = mbox_send_message(smbox->chan, xfer);
+	/* mbox_send_message returns non-negative value on success */
+	if (ret < 0) {
+		mutex_unlock(&smbox->chan_lock);
+		return ret;
+	}
 
-	return ret;
+	return 0;
 }
 
 static void mailbox_mark_txdone(struct scmi_chan_info *cinfo, int ret,
@@ -281,13 +294,10 @@ static void mailbox_mark_txdone(struct scmi_chan_info *cinfo, int ret,
 {
 	struct scmi_mailbox *smbox = cinfo->transport_info;
 
-	/*
-	 * NOTE: we might prefer not to need the mailbox ticker to manage the
-	 * transfer queueing since the protocol layer queues things by itself.
-	 * Unfortunately, we have to kick the mailbox framework after we have
-	 * received our message.
-	 */
 	mbox_client_txdone(smbox->chan, ret);
+
+	/* Release channel */
+	mutex_unlock(&smbox->chan_lock);
 }
 
 static void mailbox_fetch_response(struct scmi_chan_info *cinfo,
diff --git a/drivers/firmware/arm_sdei.c b/drivers/firmware/arm_sdei.c
index 285fe7ad490d..3e8051fe8296 100644
--- a/drivers/firmware/arm_sdei.c
+++ b/drivers/firmware/arm_sdei.c
@@ -763,7 +763,7 @@ static int sdei_device_freeze(struct device *dev)
 	int err;
 
 	/* unregister private events */
-	cpuhp_remove_state(sdei_entry_point);
+	cpuhp_remove_state(sdei_hp_state);
 
 	err = sdei_unregister_shared();
 	if (err)
diff --git a/drivers/firmware/dmi_scan.c b/drivers/firmware/dmi_scan.c
index 23b002e4d4a0..fde0656481cc 100644
--- a/drivers/firmware/dmi_scan.c
+++ b/drivers/firmware/dmi_scan.c
@@ -9,7 +9,7 @@
 #include <linux/memblock.h>
 #include <linux/random.h>
 #include <asm/dmi.h>
-#include <asm/unaligned.h>
+#include <linux/unaligned.h>
 
 #ifndef SMBIOS_ENTRY_POINT_SCAN_START
 #define SMBIOS_ENTRY_POINT_SCAN_START 0xF0000
diff --git a/drivers/firmware/efi/fdtparams.c b/drivers/firmware/efi/fdtparams.c
index 0ec83ba58097..b815d2a754ee 100644
--- a/drivers/firmware/efi/fdtparams.c
+++ b/drivers/firmware/efi/fdtparams.c
@@ -8,7 +8,7 @@
 #include <linux/libfdt.h>
 #include <linux/of_fdt.h>
 
-#include <asm/unaligned.h>
+#include <linux/unaligned.h>
 
 enum {
 	SYSTAB,
diff --git a/drivers/firmware/efi/libstub/riscv-stub.c b/drivers/firmware/efi/libstub/riscv-stub.c
index c96d6dcee86c..e7d9204baee3 100644
--- a/drivers/firmware/efi/libstub/riscv-stub.c
+++ b/drivers/firmware/efi/libstub/riscv-stub.c
@@ -7,7 +7,7 @@
 
 #include <asm/efi.h>
 #include <asm/sections.h>
-#include <asm/unaligned.h>
+#include <linux/unaligned.h>
 
 #include "efistub.h"
 
diff --git a/drivers/firmware/efi/libstub/riscv.c b/drivers/firmware/efi/libstub/riscv.c
index 8022b104c3e6..f66f33ceb99e 100644
--- a/drivers/firmware/efi/libstub/riscv.c
+++ b/drivers/firmware/efi/libstub/riscv.c
@@ -7,7 +7,7 @@
 #include <linux/libfdt.h>
 
 #include <asm/efi.h>
-#include <asm/unaligned.h>
+#include <linux/unaligned.h>
 
 #include "efistub.h"
 
diff --git a/drivers/firmware/efi/libstub/zboot.c b/drivers/firmware/efi/libstub/zboot.c
index 1ceace956758..af23b3c50228 100644
--- a/drivers/firmware/efi/libstub/zboot.c
+++ b/drivers/firmware/efi/libstub/zboot.c
@@ -3,7 +3,7 @@
 #include <linux/efi.h>
 #include <linux/pe.h>
 #include <asm/efi.h>
-#include <asm/unaligned.h>
+#include <linux/unaligned.h>
 
 #include "efistub.h"
 
diff --git a/drivers/firmware/microchip/mpfs-auto-update.c b/drivers/firmware/microchip/mpfs-auto-update.c
index 9ca5ee58edbd..0f7ec8848202 100644
--- a/drivers/firmware/microchip/mpfs-auto-update.c
+++ b/drivers/firmware/microchip/mpfs-auto-update.c
@@ -76,14 +76,11 @@
 #define AUTO_UPDATE_INFO_SIZE		SZ_1M
 #define AUTO_UPDATE_BITSTREAM_BASE	(AUTO_UPDATE_DIRECTORY_SIZE + AUTO_UPDATE_INFO_SIZE)
 
-#define AUTO_UPDATE_TIMEOUT_MS		60000
-
 struct mpfs_auto_update_priv {
 	struct mpfs_sys_controller *sys_controller;
 	struct device *dev;
 	struct mtd_info *flash;
 	struct fw_upload *fw_uploader;
-	struct completion programming_complete;
 	size_t size_per_bitstream;
 	bool cancel_request;
 };
@@ -156,19 +153,6 @@ static void mpfs_auto_update_cancel(struct fw_upload *fw_uploader)
 
 static enum fw_upload_err mpfs_auto_update_poll_complete(struct fw_upload *fw_uploader)
 {
-	struct mpfs_auto_update_priv *priv = fw_uploader->dd_handle;
-	int ret;
-
-	/*
-	 * There is no meaningful way to get the status of the programming while
-	 * it is in progress, so attempting anything other than waiting for it
-	 * to complete would be misplaced.
-	 */
-	ret = wait_for_completion_timeout(&priv->programming_complete,
-					  msecs_to_jiffies(AUTO_UPDATE_TIMEOUT_MS));
-	if (!ret)
-		return FW_UPLOAD_ERR_TIMEOUT;
-
 	return FW_UPLOAD_ERR_NONE;
 }
 
@@ -349,33 +333,23 @@ static enum fw_upload_err mpfs_auto_update_write(struct fw_upload *fw_uploader,
 						 u32 offset, u32 size, u32 *written)
 {
 	struct mpfs_auto_update_priv *priv = fw_uploader->dd_handle;
-	enum fw_upload_err err = FW_UPLOAD_ERR_NONE;
 	int ret;
 
-	reinit_completion(&priv->programming_complete);
-
 	ret = mpfs_auto_update_write_bitstream(fw_uploader, data, offset, size, written);
-	if (ret) {
-		err = FW_UPLOAD_ERR_RW_ERROR;
-		goto out;
-	}
+	if (ret)
+		return FW_UPLOAD_ERR_RW_ERROR;
 
-	if (priv->cancel_request) {
-		err = FW_UPLOAD_ERR_CANCELED;
-		goto out;
-	}
+	if (priv->cancel_request)
+		return FW_UPLOAD_ERR_CANCELED;
 
 	if (mpfs_auto_update_is_bitstream_info(data, size))
-		goto out;
+		return FW_UPLOAD_ERR_NONE;
 
 	ret = mpfs_auto_update_verify_image(fw_uploader);
 	if (ret)
-		err = FW_UPLOAD_ERR_FW_INVALID;
+		return FW_UPLOAD_ERR_FW_INVALID;
 
-out:
-	complete(&priv->programming_complete);
-
-	return err;
+	return FW_UPLOAD_ERR_NONE;
 }
 
 static const struct fw_upload_ops mpfs_auto_update_ops = {
@@ -461,8 +435,6 @@ static int mpfs_auto_update_probe(struct platform_device *pdev)
 		return dev_err_probe(dev, ret,
 				     "The current bitstream does not support auto-update\n");
 
-	init_completion(&priv->programming_complete);
-
 	fw_uploader = firmware_upload_register(THIS_MODULE, dev, "mpfs-auto-update",
 					       &mpfs_auto_update_ops, priv);
 	if (IS_ERR(fw_uploader))
diff --git a/drivers/firmware/qcom/qcom_scm.c b/drivers/firmware/qcom/qcom_scm.c
index 10986cb11ec0..2e4260ba5f79 100644
--- a/drivers/firmware/qcom/qcom_scm.c
+++ b/drivers/firmware/qcom/qcom_scm.c
@@ -112,6 +112,7 @@ enum qcom_scm_qseecom_tz_cmd_info {
 };
 
 #define QSEECOM_MAX_APP_NAME_SIZE		64
+#define SHMBRIDGE_RESULT_NOTSUPP		4
 
 /* Each bit configures cold/warm boot address for one of the 4 CPUs */
 static const u8 qcom_scm_cpu_cold_bits[QCOM_SCM_BOOT_MAX_CPUS] = {
@@ -216,7 +217,7 @@ static DEFINE_SPINLOCK(scm_query_lock);
 
 struct qcom_tzmem_pool *qcom_scm_get_tzmem_pool(void)
 {
-	return __scm->mempool;
+	return __scm ? __scm->mempool : NULL;
 }
 
 static enum qcom_scm_convention __get_convention(void)
@@ -545,7 +546,7 @@ static void qcom_scm_set_download_mode(u32 dload_mode)
 	} else if (__qcom_scm_is_call_available(__scm->dev, QCOM_SCM_SVC_BOOT,
 						QCOM_SCM_BOOT_SET_DLOAD_MODE)) {
 		ret = __qcom_scm_set_dload_mode(__scm->dev, !!dload_mode);
-	} else {
+	} else if (dload_mode) {
 		dev_err(__scm->dev,
 			"No available mechanism for setting download mode\n");
 	}
@@ -1361,6 +1362,8 @@ EXPORT_SYMBOL_GPL(qcom_scm_lmh_dcvsh_available);
 
 int qcom_scm_shm_bridge_enable(void)
 {
+	int ret;
+
 	struct qcom_scm_desc desc = {
 		.svc = QCOM_SCM_SVC_MP,
 		.cmd = QCOM_SCM_MP_SHM_BRIDGE_ENABLE,
@@ -1373,7 +1376,15 @@ int qcom_scm_shm_bridge_enable(void)
 					  QCOM_SCM_MP_SHM_BRIDGE_ENABLE))
 		return -EOPNOTSUPP;
 
-	return qcom_scm_call(__scm->dev, &desc, &res) ?: res.result[0];
+	ret = qcom_scm_call(__scm->dev, &desc, &res);
+
+	if (ret)
+		return ret;
+
+	if (res.result[0] == SHMBRIDGE_RESULT_NOTSUPP)
+		return -EOPNOTSUPP;
+
+	return res.result[0];
 }
 EXPORT_SYMBOL_GPL(qcom_scm_shm_bridge_enable);
 
diff --git a/drivers/firmware/sysfb.c b/drivers/firmware/sysfb.c
index 02a07d3d0d40..a3df782fa687 100644
--- a/drivers/firmware/sysfb.c
+++ b/drivers/firmware/sysfb.c
@@ -67,9 +67,11 @@ static bool sysfb_unregister(void)
 void sysfb_disable(struct device *dev)
 {
 	struct screen_info *si = &screen_info;
+	struct device *parent;
 
 	mutex_lock(&disable_lock);
-	if (!dev || dev == sysfb_parent_dev(si)) {
+	parent = sysfb_parent_dev(si);
+	if (!dev || !parent || dev == parent) {
 		sysfb_unregister();
 		disabled = true;
 	}