USB: phy: fsl-usb: remove character device usage

No idea why this driver is using a char device node, statically
allocated, with no dynamic allocation or hook up with devtmpfs, along
with a reserverd major number, for "special" operations, not all of
which ever were implemented.

So just rip it out, as no one must be using it because no modern system
will ever actually create the /dev/ node it needs.

Cc: Felipe Balbi <balbi@kernel.org>
Reviewed-by: Ran Wang <ran.wang_1@nxp.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Link: https://lore.kernel.org/r/20200702072914.1072878-2-gregkh@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 0 insertions, 69 deletions

diff --git a/drivers/usb/phy/phy-fsl-usb.c b/drivers/usb/phy/phy-fsl-usb.c
index 93d2257aeec8..0c6d9f9f2994 100644
--- a/drivers/usb/phy/phy-fsl-usb.c
+++ b/drivers/usb/phy/phy-fsl-usb.c
@@ -957,67 +957,6 @@ int usb_otg_start(struct platform_device *pdev)
 	return 0;
 }
 
-/* Char driver interface to control some OTG input */
-
-/*
- * Handle some ioctl command, such as get otg
- * status and set host suspend
- */
-static long fsl_otg_ioctl(struct file *file, unsigned int cmd,
-			  unsigned long arg)
-{
-	u32 retval = 0;
-
-	switch (cmd) {
-	case GET_OTG_STATUS:
-		retval = fsl_otg_dev->host_working;
-		break;
-
-	case SET_A_SUSPEND_REQ:
-		fsl_otg_dev->fsm.a_suspend_req_inf = arg;
-		break;
-
-	case SET_A_BUS_DROP:
-		fsl_otg_dev->fsm.a_bus_drop = arg;
-		break;
-
-	case SET_A_BUS_REQ:
-		fsl_otg_dev->fsm.a_bus_req = arg;
-		break;
-
-	case SET_B_BUS_REQ:
-		fsl_otg_dev->fsm.b_bus_req = arg;
-		break;
-
-	default:
-		break;
-	}
-
-	otg_statemachine(&fsl_otg_dev->fsm);
-
-	return retval;
-}
-
-static int fsl_otg_open(struct inode *inode, struct file *file)
-{
-	return 0;
-}
-
-static int fsl_otg_release(struct inode *inode, struct file *file)
-{
-	return 0;
-}
-
-static const struct file_operations otg_fops = {
-	.owner = THIS_MODULE,
-	.llseek = NULL,
-	.read = NULL,
-	.write = NULL,
-	.unlocked_ioctl = fsl_otg_ioctl,
-	.open = fsl_otg_open,
-	.release = fsl_otg_release,
-};
-
 static int fsl_otg_probe(struct platform_device *pdev)
 {
 	int ret;
@@ -1039,12 +978,6 @@ static int fsl_otg_probe(struct platform_device *pdev)
 		return ret;
 	}
 
-	ret = register_chrdev(FSL_OTG_MAJOR, FSL_OTG_NAME, &otg_fops);
-	if (ret) {
-		dev_err(&pdev->dev, "unable to register FSL OTG device\n");
-		return ret;
-	}
-
 	return ret;
 }
 
@@ -1061,8 +994,6 @@ static int fsl_otg_remove(struct platform_device *pdev)
 	kfree(fsl_otg_dev->phy.otg);
 	kfree(fsl_otg_dev);
 
-	unregister_chrdev(FSL_OTG_MAJOR, FSL_OTG_NAME);
-
 	if (pdata->exit)
 		pdata->exit(pdev);