mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-20 14:13:16 +00:00
72 lines
2.2 KiB
Diff
72 lines
2.2 KiB
Diff
From 80c20ff00542b050733780ae6088e50663ee8d78 Mon Sep 17 00:00:00 2001
|
|
From: Phil Elwell <phil@raspberrypi.org>
|
|
Date: Mon, 29 Jul 2019 12:03:21 +0100
|
|
Subject: [PATCH 729/806] driver: char: rpivid - also support legacy name
|
|
|
|
Provide transitional support for the previous names of
|
|
the character devices.
|
|
|
|
Signed-off-by: Phil Elwell <phil@raspberrypi.org>
|
|
---
|
|
drivers/char/broadcom/rpivid-mem.c | 22 ++++++++++++++++++----
|
|
1 file changed, 18 insertions(+), 4 deletions(-)
|
|
|
|
--- a/drivers/char/broadcom/rpivid-mem.c
|
|
+++ b/drivers/char/broadcom/rpivid-mem.c
|
|
@@ -66,7 +66,7 @@ static int rpivid_mem_open(struct inode
|
|
int dev = iminor(inode);
|
|
int ret = 0;
|
|
struct rpivid_mem_priv *priv;
|
|
- if (dev != DEVICE_MINOR)
|
|
+ if (dev != DEVICE_MINOR && dev != DEVICE_MINOR + 1)
|
|
ret = -ENXIO;
|
|
|
|
priv = container_of(inode->i_cdev, struct rpivid_mem_priv,
|
|
@@ -82,7 +82,7 @@ static int rpivid_mem_release(struct ino
|
|
int dev = iminor(inode);
|
|
int ret = 0;
|
|
|
|
- if (dev != DEVICE_MINOR)
|
|
+ if (dev != DEVICE_MINOR && dev != DEVICE_MINOR + 1)
|
|
ret = -ENXIO;
|
|
|
|
return ret;
|
|
@@ -167,14 +167,14 @@ static int rpivid_mem_probe(struct platf
|
|
/* Create character device entries */
|
|
|
|
err = alloc_chrdev_region(&priv->devid,
|
|
- DEVICE_MINOR, 1, priv->name);
|
|
+ DEVICE_MINOR, 2, priv->name);
|
|
if (err != 0) {
|
|
dev_err(priv->dev, "unable to allocate device number");
|
|
goto failed_alloc_chrdev;
|
|
}
|
|
cdev_init(&priv->rpivid_mem_cdev, &rpivid_mem_fops);
|
|
priv->rpivid_mem_cdev.owner = THIS_MODULE;
|
|
- err = cdev_add(&priv->rpivid_mem_cdev, priv->devid, 1);
|
|
+ err = cdev_add(&priv->rpivid_mem_cdev, priv->devid, 2);
|
|
if (err != 0) {
|
|
dev_err(priv->dev, "unable to register device");
|
|
goto failed_cdev_add;
|
|
@@ -194,6 +194,20 @@ static int rpivid_mem_probe(struct platf
|
|
if (IS_ERR(ptr_err))
|
|
goto failed_device_create;
|
|
|
|
+ /* Legacy alias */
|
|
+ {
|
|
+ char *oldname = kstrdup(priv->name, GFP_KERNEL);
|
|
+
|
|
+ oldname[1] = 'a';
|
|
+ oldname[2] = 'r';
|
|
+ oldname[3] = 'g';
|
|
+ oldname[4] = 'o';
|
|
+ oldname[5] = 'n';
|
|
+ (void)device_create(priv->class, NULL, priv->devid + 1, NULL,
|
|
+ oldname + 1);
|
|
+ kfree(oldname);
|
|
+ }
|
|
+
|
|
dev_info(priv->dev, "%s initialised: Registers at 0x%08lx length 0x%08lx",
|
|
priv->name, priv->regs_phys, priv->mem_window_len);
|
|
|