Merge tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc

Pull ARM SoC-related driver updates from Olof Johansson:
 "Various driver updates for platforms and a couple of the small driver
  subsystems we merge through our tree:

   - A driver for SCU (system control) on NXP i.MX8QXP

   - Qualcomm Always-on Subsystem messaging driver (AOSS QMP)

   - Qualcomm PM support for MSM8998

   - Support for a newer version of DRAM PHY driver for Broadcom (DPFE)

   - Reset controller support for Bitmain BM1880

   - TI SCI (System Control Interface) support for CPU control on AM654
     processors

   - More TI sysc refactoring and rework"

* tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (84 commits)
  reset: remove redundant null check on pointer dev
  soc: rockchip: work around clang warning
  dt-bindings: reset: imx7: Fix the spelling of 'indices'
  soc: imx: Add i.MX8MN SoC driver support
  soc: aspeed: lpc-ctrl: Fix probe error handling
  soc: qcom: geni: Add support for ACPI
  firmware: ti_sci: Fix gcc unused-but-set-variable warning
  firmware: ti_sci: Use the correct style for SPDX License Identifier
  soc: imx8: Use existing of_root directly
  soc: imx8: Fix potential kernel dump in error path
  firmware/psci: psci_checker: Park kthreads before stopping them
  memory: move jedec_ddr.h from include/memory to drivers/memory/
  memory: move jedec_ddr_data.c from lib/ to drivers/memory/
  MAINTAINERS: Remove myself as qcom maintainer
  soc: aspeed: lpc-ctrl: make parameter optional
  soc: qcom: apr: Don't use reg for domain id
  soc: qcom: fix QCOM_AOSS_QMP dependency and build errors
  memory: tegra: Fix -Wunused-const-variable
  firmware: tegra: Early resume BPMP
  soc/tegra: Select pinctrl for Tegra194
  ...

1 files changed, 38 insertions, 23 deletions

diff --git a/drivers/soc/aspeed/aspeed-lpc-ctrl.c b/drivers/soc/aspeed/aspeed-lpc-ctrl.c
index 61276ec692f8..01ed21e8bfee 100644
--- a/drivers/soc/aspeed/aspeed-lpc-ctrl.c
+++ b/drivers/soc/aspeed/aspeed-lpc-ctrl.c
@@ -64,6 +64,7 @@ static long aspeed_lpc_ctrl_ioctl(struct file *file, unsigned int cmd,
 		unsigned long param)
 {
 	struct aspeed_lpc_ctrl *lpc_ctrl = file_aspeed_lpc_ctrl(file);
+	struct device *dev = file->private_data;
 	void __user *p = (void __user *)param;
 	struct aspeed_lpc_ctrl_mapping map;
 	u32 addr;
@@ -86,6 +87,12 @@ static long aspeed_lpc_ctrl_ioctl(struct file *file, unsigned int cmd,
 		if (map.window_id != 0)
 			return -EINVAL;
 
+		/* If memory-region is not described in device tree */
+		if (!lpc_ctrl->mem_size) {
+			dev_dbg(dev, "Didn't find reserved memory\n");
+			return -ENXIO;
+		}
+
 		map.size = lpc_ctrl->mem_size;
 
 		return copy_to_user(p, &map, sizeof(map)) ? -EFAULT : 0;
@@ -122,9 +129,18 @@ static long aspeed_lpc_ctrl_ioctl(struct file *file, unsigned int cmd,
 			return -EINVAL;
 
 		if (map.window_type == ASPEED_LPC_CTRL_WINDOW_FLASH) {
+			if (!lpc_ctrl->pnor_size) {
+				dev_dbg(dev, "Didn't find host pnor flash\n");
+				return -ENXIO;
+			}
 			addr = lpc_ctrl->pnor_base;
 			size = lpc_ctrl->pnor_size;
 		} else if (map.window_type == ASPEED_LPC_CTRL_WINDOW_MEMORY) {
+			/* If memory-region is not described in device tree */
+			if (!lpc_ctrl->mem_size) {
+				dev_dbg(dev, "Didn't find reserved memory\n");
+				return -ENXIO;
+			}
 			addr = lpc_ctrl->mem_base;
 			size = lpc_ctrl->mem_size;
 		} else {
@@ -192,40 +208,41 @@ static int aspeed_lpc_ctrl_probe(struct platform_device *pdev)
 	if (!lpc_ctrl)
 		return -ENOMEM;
 
+	/* If flash is described in device tree then store */
 	node = of_parse_phandle(dev->of_node, "flash", 0);
 	if (!node) {
-		dev_err(dev, "Didn't find host pnor flash node\n");
-		return -ENODEV;
-	}
+		dev_dbg(dev, "Didn't find host pnor flash node\n");
+	} else {
+		rc = of_address_to_resource(node, 1, &resm);
+		of_node_put(node);
+		if (rc) {
+			dev_err(dev, "Couldn't address to resource for flash\n");
+			return rc;
+		}
 
-	rc = of_address_to_resource(node, 1, &resm);
-	of_node_put(node);
-	if (rc) {
-		dev_err(dev, "Couldn't address to resource for flash\n");
-		return rc;
+		lpc_ctrl->pnor_size = resource_size(&resm);
+		lpc_ctrl->pnor_base = resm.start;
 	}
 
-	lpc_ctrl->pnor_size = resource_size(&resm);
-	lpc_ctrl->pnor_base = resm.start;
 
 	dev_set_drvdata(&pdev->dev, lpc_ctrl);
 
+	/* If memory-region is described in device tree then store */
 	node = of_parse_phandle(dev->of_node, "memory-region", 0);
 	if (!node) {
-		dev_err(dev, "Didn't find reserved memory\n");
-		return -EINVAL;
-	}
+		dev_dbg(dev, "Didn't find reserved memory\n");
+	} else {
+		rc = of_address_to_resource(node, 0, &resm);
+		of_node_put(node);
+		if (rc) {
+			dev_err(dev, "Couldn't address to resource for reserved memory\n");
+			return -ENXIO;
+		}
 
-	rc = of_address_to_resource(node, 0, &resm);
-	of_node_put(node);
-	if (rc) {
-		dev_err(dev, "Couldn't address to resource for reserved memory\n");
-		return -ENOMEM;
+		lpc_ctrl->mem_size = resource_size(&resm);
+		lpc_ctrl->mem_base = resm.start;
 	}
 
-	lpc_ctrl->mem_size = resource_size(&resm);
-	lpc_ctrl->mem_base = resm.start;
-
 	lpc_ctrl->regmap = syscon_node_to_regmap(
 			pdev->dev.parent->of_node);
 	if (IS_ERR(lpc_ctrl->regmap)) {
@@ -254,8 +271,6 @@ static int aspeed_lpc_ctrl_probe(struct platform_device *pdev)
 		goto err;
 	}
 
-	dev_info(dev, "Loaded at %pr\n", &resm);
-
 	return 0;
 
 err: