V4L/DVB (5750): Remove obsoleted support for PROC_FS on vicam.c
Procfs support on V4L were converted to sysfs support by a pre-2.6 patch: http://www.ussg.iu.edu/hypermail/linux/kernel/0307.1/2356.html There's no sense on keeping the dead code inside vicam.c. Also,it won't work anyway, as part of proc_fs support were previously inside videodev.c. Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
This commit is contained in:
Mauro Carvalho Chehab
parent
890be2bb55
commit
018ec5440b
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@ -42,7 +42,6 @@
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#include <linux/usb.h>
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#include <linux/vmalloc.h>
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#include <linux/slab.h>
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#include <linux/proc_fs.h>
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#include <linux/mutex.h>
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#include "usbvideo.h"
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@ -417,11 +416,6 @@ struct vicam_camera {
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u8 open_count;
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u8 bulkEndpoint;
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int needsDummyRead;
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#if defined(CONFIG_VIDEO_PROC_FS)
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struct proc_dir_entry *proc_dir;
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#endif
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};
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static int vicam_probe( struct usb_interface *intf, const struct usb_device_id *id);
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@ -1065,175 +1059,6 @@ vicam_mmap(struct file *file, struct vm_area_struct *vma)
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return 0;
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}
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#if defined(CONFIG_VIDEO_PROC_FS)
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static struct proc_dir_entry *vicam_proc_root = NULL;
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static int vicam_read_helper(char *page, char **start, off_t off,
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int count, int *eof, int value)
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{
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char *out = page;
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int len;
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out += sprintf(out, "%d",value);
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len = out - page;
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len -= off;
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if (len < count) {
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*eof = 1;
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if (len <= 0)
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return 0;
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} else
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len = count;
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*start = page + off;
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return len;
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}
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static int vicam_read_proc_shutter(char *page, char **start, off_t off,
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int count, int *eof, void *data)
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{
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return vicam_read_helper(page,start,off,count,eof,
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((struct vicam_camera *)data)->shutter_speed);
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}
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static int vicam_read_proc_gain(char *page, char **start, off_t off,
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int count, int *eof, void *data)
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{
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return vicam_read_helper(page,start,off,count,eof,
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((struct vicam_camera *)data)->gain);
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}
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static int
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vicam_write_proc_shutter(struct file *file, const char *buffer,
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unsigned long count, void *data)
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{
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u16 stmp;
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char kbuf[8];
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struct vicam_camera *cam = (struct vicam_camera *) data;
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if (count > 6)
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return -EINVAL;
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if (copy_from_user(kbuf, buffer, count))
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return -EFAULT;
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stmp = (u16) simple_strtoul(kbuf, NULL, 10);
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if (stmp < 4 || stmp > 32000)
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return -EINVAL;
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cam->shutter_speed = stmp;
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return count;
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}
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static int
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vicam_write_proc_gain(struct file *file, const char *buffer,
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unsigned long count, void *data)
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{
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u16 gtmp;
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char kbuf[8];
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struct vicam_camera *cam = (struct vicam_camera *) data;
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if (count > 4)
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return -EINVAL;
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if (copy_from_user(kbuf, buffer, count))
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return -EFAULT;
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gtmp = (u16) simple_strtoul(kbuf, NULL, 10);
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if (gtmp > 255)
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return -EINVAL;
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cam->gain = gtmp;
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return count;
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}
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static void
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vicam_create_proc_root(void)
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{
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vicam_proc_root = proc_mkdir("video/vicam", NULL);
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if (vicam_proc_root)
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vicam_proc_root->owner = THIS_MODULE;
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else
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printk(KERN_ERR
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"could not create /proc entry for vicam!");
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}
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static void
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vicam_destroy_proc_root(void)
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{
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if (vicam_proc_root)
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remove_proc_entry("video/vicam", 0);
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}
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static void
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vicam_create_proc_entry(struct vicam_camera *cam)
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{
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char name[64];
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struct proc_dir_entry *ent;
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DBG(KERN_INFO "vicam: creating proc entry\n");
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if (!vicam_proc_root || !cam) {
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printk(KERN_INFO
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"vicam: could not create proc entry, %s pointer is null.\n",
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(!cam ? "camera" : "root"));
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return;
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}
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sprintf(name, "video%d", cam->vdev.minor);
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cam->proc_dir = proc_mkdir(name, vicam_proc_root);
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if ( !cam->proc_dir )
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return; // FIXME: We should probably return an error here
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ent = create_proc_entry("shutter", S_IFREG | S_IRUGO | S_IWUSR,
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cam->proc_dir);
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if (ent) {
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ent->data = cam;
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ent->read_proc = vicam_read_proc_shutter;
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ent->write_proc = vicam_write_proc_shutter;
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ent->size = 64;
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}
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ent = create_proc_entry("gain", S_IFREG | S_IRUGO | S_IWUSR,
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cam->proc_dir);
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if (ent) {
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ent->data = cam;
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ent->read_proc = vicam_read_proc_gain;
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ent->write_proc = vicam_write_proc_gain;
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ent->size = 64;
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}
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}
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static void
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vicam_destroy_proc_entry(void *ptr)
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{
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struct vicam_camera *cam = (struct vicam_camera *) ptr;
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char name[16];
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if ( !cam->proc_dir )
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return;
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sprintf(name, "video%d", cam->vdev.minor);
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remove_proc_entry("shutter", cam->proc_dir);
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remove_proc_entry("gain", cam->proc_dir);
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remove_proc_entry(name,vicam_proc_root);
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cam->proc_dir = NULL;
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}
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#else
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static inline void vicam_create_proc_root(void) { }
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static inline void vicam_destroy_proc_root(void) { }
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static inline void vicam_create_proc_entry(struct vicam_camera *cam) { }
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static inline void vicam_destroy_proc_entry(void *ptr) { }
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#endif
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static const struct file_operations vicam_fops = {
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.owner = THIS_MODULE,
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.open = vicam_open,
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@ -1330,8 +1155,6 @@ vicam_probe( struct usb_interface *intf, const struct usb_device_id *id)
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return -EIO;
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}
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vicam_create_proc_entry(cam);
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printk(KERN_INFO "ViCam webcam driver now controlling video device %d\n",cam->vdev.minor);
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usb_set_intfdata (intf, cam);
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@ -1363,8 +1186,6 @@ vicam_disconnect(struct usb_interface *intf)
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cam->udev = NULL;
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vicam_destroy_proc_entry(cam);
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/* the only thing left to do is synchronize with
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* our close/release function on who should release
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* the camera memory. if there are any users using the
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@ -1390,7 +1211,6 @@ usb_vicam_init(void)
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{
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int retval;
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DBG(KERN_INFO "ViCam-based WebCam driver startup\n");
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vicam_create_proc_root();
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retval = usb_register(&vicam_driver);
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if (retval)
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printk(KERN_WARNING "usb_register failed!\n");
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@ -1404,7 +1224,6 @@ usb_vicam_exit(void)
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"ViCam-based WebCam driver shutdown\n");
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usb_deregister(&vicam_driver);
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vicam_destroy_proc_root();
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}
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module_init(usb_vicam_init);
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