Staging driver fixes for 5.11-rc3

Here are some small staging driver fixes for 5.11-rc3.  Nothing major,
 just resolving some reported issues:
 	- cleanup some remaining mentions of the ION drivers that were
 	  removed in 5.11-rc1
 	- comedi driver bugfix
 	- 2 error path memory leak fixes
 
 All have been in linux-next for a while with no reported issues.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'staging-5.11-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging

Pull staging driver fixes from Greg KH:
 "Here are some small staging driver fixes for 5.11-rc3. Nothing major,
  just resolving some reported issues:

   - cleanup some remaining mentions of the ION drivers that were
     removed in 5.11-rc1

   - comedi driver bugfix

   - two error path memory leak fixes

  All have been in linux-next for a while with no reported issues"

* tag 'staging-5.11-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging:
  staging: ION: remove some references to CONFIG_ION
  staging: mt7621-dma: Fix a resource leak in an error handling path
  Staging: comedi: Return -EFAULT if copy_to_user() fails
  staging: spmi: hisi-spmi-controller: Fix some error handling paths

drivers/staging/comedi/comedi_fops.c

@@ -2987,7 +2987,9 @@ static int put_compat_cmd(struct comedi32_cmd_struct __user *cmd32,
 	v32.chanlist_len = cmd->chanlist_len;
 	v32.data = ptr_to_compat(cmd->data);
 	v32.data_len = cmd->data_len;
-	return copy_to_user(cmd32, &v32, sizeof(v32));
+	if (copy_to_user(cmd32, &v32, sizeof(v32)))
+		return -EFAULT;
+	return 0;
 }
 
 /* Handle 32-bit COMEDI_CMD ioctl. */

drivers/staging/hikey9xx/hisi-spmi-controller.c

@@ -278,21 +278,24 @@ static int spmi_controller_probe(struct platform_device *pdev)
 	iores = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 	if (!iores) {
 		dev_err(&pdev->dev, "can not get resource!\n");
-		return -EINVAL;
+		ret = -EINVAL;
+		goto err_put_controller;
 	}
 
 	spmi_controller->base = devm_ioremap(&pdev->dev, iores->start,
 					     resource_size(iores));
 	if (!spmi_controller->base) {
 		dev_err(&pdev->dev, "can not remap base addr!\n");
-		return -EADDRNOTAVAIL;
+		ret = -EADDRNOTAVAIL;
+		goto err_put_controller;
 	}
 
 	ret = of_property_read_u32(pdev->dev.of_node, "spmi-channel",
 				   &spmi_controller->channel);
 	if (ret) {
 		dev_err(&pdev->dev, "can not get channel\n");
-		return -ENODEV;
+		ret = -ENODEV;
+		goto err_put_controller;
 	}
 
 	platform_set_drvdata(pdev, spmi_controller);
@@ -309,9 +312,15 @@ static int spmi_controller_probe(struct platform_device *pdev)
 	ctrl->write_cmd = spmi_write_cmd;
 
 	ret = spmi_controller_add(ctrl);
-	if (ret)
-		dev_err(&pdev->dev, "spmi_add_controller failed with error %d!\n", ret);
+	if (ret) {
+		dev_err(&pdev->dev, "spmi_controller_add failed with error %d!\n", ret);
+		goto err_put_controller;
+	}
 
+	return 0;
+
+err_put_controller:
+	spmi_controller_put(ctrl);
 	return ret;
 }
 
@@ -320,7 +329,7 @@ static int spmi_del_controller(struct platform_device *pdev)
 	struct spmi_controller *ctrl = platform_get_drvdata(pdev);
 
 	spmi_controller_remove(ctrl);
-	kfree(ctrl);
+	spmi_controller_put(ctrl);
 	return 0;
 }
 

drivers/staging/media/atomisp/pci/atomisp_subdev.c

@@ -1062,26 +1062,6 @@ static const struct v4l2_ctrl_config ctrl_select_isp_version = {
 	.def = 0,
 };
 
-#if 0 /* #ifdef CONFIG_ION */
-/*
- * Control for ISP ion device fd
- *
- * userspace will open ion device and pass the fd to kernel.
- * this fd will be used to map shared fd to buffer.
- */
-/* V4L2_CID_ATOMISP_ION_DEVICE_FD is not defined */
-static const struct v4l2_ctrl_config ctrl_ion_dev_fd = {
-	.ops = &ctrl_ops,
-	.id = V4L2_CID_ATOMISP_ION_DEVICE_FD,
-	.type = V4L2_CTRL_TYPE_INTEGER,
-	.name = "Ion Device Fd",
-	.min = -1,
-	.max = 1024,
-	.step = 1,
-	.def = ION_FD_UNSET
-};
-#endif
-
 static void atomisp_init_subdev_pipe(struct atomisp_sub_device *asd,
 				     struct atomisp_video_pipe *pipe, enum v4l2_buf_type buf_type)
 {

drivers/staging/mt7621-dma/mtk-hsdma.c

@@ -712,7 +712,7 @@ static int mtk_hsdma_probe(struct platform_device *pdev)
 	ret = dma_async_device_register(dd);
 	if (ret) {
 		dev_err(&pdev->dev, "failed to register dma device\n");
-		return ret;
+		goto err_uninit_hsdma;
 	}
 
 	ret = of_dma_controller_register(pdev->dev.of_node,
@@ -728,6 +728,8 @@ static int mtk_hsdma_probe(struct platform_device *pdev)
 
 err_unregister:
 	dma_async_device_unregister(dd);
+err_uninit_hsdma:
+	mtk_hsdma_uninit(hsdma);
 	return ret;
 }
 

kernel/configs/android-recommended.config

@@ -81,7 +81,6 @@ CONFIG_INPUT_JOYSTICK=y
 CONFIG_INPUT_MISC=y
 CONFIG_INPUT_TABLET=y
 CONFIG_INPUT_UINPUT=y
-CONFIG_ION=y
 CONFIG_JOYSTICK_XPAD=y
 CONFIG_JOYSTICK_XPAD_FF=y
 CONFIG_JOYSTICK_XPAD_LEDS=y