1 files changed, 2 insertions, 194 deletions

diff --git a/drivers/usb/media/ov511.c b/drivers/usb/media/ov511.c
index 8af665bbe330..51e9cc06f7e3 100644
--- a/drivers/usb/media/ov511.c
+++ b/drivers/usb/media/ov511.c
@@ -204,22 +204,10 @@ MODULE_LICENSE("GPL");
 
 static struct usb_driver ov511_driver;
 
-static struct ov51x_decomp_ops *ov511_decomp_ops;
-static struct ov51x_decomp_ops *ov511_mmx_decomp_ops;
-static struct ov51x_decomp_ops *ov518_decomp_ops;
-static struct ov51x_decomp_ops *ov518_mmx_decomp_ops;
-
 /* Number of times to retry a failed I2C transaction. Increase this if you
  * are getting "Failed to read sensor ID..." */
 static const int i2c_detect_tries = 5;
 
-/* MMX support is present in kernel and CPU. Checked upon decomp module load. */
-#if defined(__i386__) || defined(__x86_64__)
-#define ov51x_mmx_available (cpu_has_mmx)
-#else
-#define ov51x_mmx_available (0)
-#endif
-
 static struct usb_device_id device_table [] = {
         { USB_DEVICE(VEND_OMNIVISION, PROD_OV511) },
         { USB_DEVICE(VEND_OMNIVISION, PROD_OV511PLUS) },
@@ -3012,93 +3000,18 @@ yuv420raw_to_yuv420p(struct ov511_frame *frame,
  *
  **********************************************************************/
 
-/* Chooses a decompression module, locks it, and sets ov->decomp_ops
- * accordingly. Returns -ENXIO if decompressor is not available, otherwise
- * returns 0 if no other error.
- */
 static int
 request_decompressor(struct usb_ov511 *ov)
 {
-        if (!ov)
-                return -ENODEV;
-
-        if (ov->decomp_ops) {
-                err("ERROR: Decompressor already requested!");
-                return -EINVAL;
-        }
-
-        lock_kernel();
-
-        /* Try to get MMX, and fall back on no-MMX if necessary */
-        if (ov->bclass == BCL_OV511) {
-                if (ov511_mmx_decomp_ops) {
-                        PDEBUG(3, "Using OV511 MMX decompressor");
-                        ov->decomp_ops = ov511_mmx_decomp_ops;
-                } else if (ov511_decomp_ops) {
-                        PDEBUG(3, "Using OV511 decompressor");
-                        ov->decomp_ops = ov511_decomp_ops;
-                } else {
-                        err("No decompressor available");
-                }
-        } else if (ov->bclass == BCL_OV518) {
-                if (ov518_mmx_decomp_ops) {
-                        PDEBUG(3, "Using OV518 MMX decompressor");
-                        ov->decomp_ops = ov518_mmx_decomp_ops;
-                } else if (ov518_decomp_ops) {
-                        PDEBUG(3, "Using OV518 decompressor");
-                        ov->decomp_ops = ov518_decomp_ops;
-                } else {
-                        err("No decompressor available");
-                }
+        if (ov->bclass == BCL_OV511 || ov->bclass == BCL_OV518) {
+                err("No decompressor available");
         } else {
                 err("Unknown bridge");
         }
 
-        if (!ov->decomp_ops)
-                goto nosys;
-
-        if (!ov->decomp_ops->owner) {
-                ov->decomp_ops = NULL;
-                goto nosys;
-        }
-        
-        if (!try_module_get(ov->decomp_ops->owner))
-                goto nosys;
-
-        unlock_kernel();
-        return 0;
-
- nosys:
-        unlock_kernel();
         return -ENOSYS;
 }
 
-/* Unlocks decompression module and nulls ov->decomp_ops. Safe to call even
- * if ov->decomp_ops is NULL.
- */
-static void
-release_decompressor(struct usb_ov511 *ov)
-{
-        int released = 0;       /* Did we actually do anything? */
-
-        if (!ov)
-                return;
-
-        lock_kernel();
-
-        if (ov->decomp_ops) {
-                module_put(ov->decomp_ops->owner);
-                released = 1;
-        }
-
-        ov->decomp_ops = NULL;
-
-        unlock_kernel();
-
-        if (released)
-                PDEBUG(3, "Decompressor released");
-}
-
 static void
 decompress(struct usb_ov511 *ov, struct ov511_frame *frame,
            unsigned char *pIn0, unsigned char *pOut0)
@@ -3107,31 +3020,6 @@ decompress(struct usb_ov511 *ov, struct ov511_frame *frame,
                 if (request_decompressor(ov))
                         return;
 
-        PDEBUG(4, "Decompressing %d bytes", frame->bytes_recvd);
-
-        if (frame->format == VIDEO_PALETTE_GREY
-            && ov->decomp_ops->decomp_400) {
-                int ret = ov->decomp_ops->decomp_400(
-                        pIn0,
-                        pOut0,
-                        frame->compbuf,
-                        frame->rawwidth,
-                        frame->rawheight,
-                        frame->bytes_recvd);
-                PDEBUG(4, "DEBUG: decomp_400 returned %d", ret);
-        } else if (frame->format != VIDEO_PALETTE_GREY
-                   && ov->decomp_ops->decomp_420) {
-                int ret = ov->decomp_ops->decomp_420(
-                        pIn0,
-                        pOut0,
-                        frame->compbuf,
-                        frame->rawwidth,
-                        frame->rawheight,
-                        frame->bytes_recvd);
-                PDEBUG(4, "DEBUG: decomp_420 returned %d", ret);
-        } else {
-                err("Decompressor does not support this format");
-        }
 }
 
 /**********************************************************************
@@ -4087,8 +3975,6 @@ ov51x_v4l1_close(struct inode *inode, struct file *file)
         ov->user--;
         ov51x_stop_isoc(ov);
 
-        release_decompressor(ov);
-
         if (ov->led_policy == LED_AUTO)
                 ov51x_led_control(ov, 0);
 
@@ -6021,82 +5907,6 @@ static struct usb_driver ov511_driver = {
  *
  ***************************************************************************/
 
-/* Returns 0 for success */
-int
-ov511_register_decomp_module(int ver, struct ov51x_decomp_ops *ops, int ov518,
-                             int mmx)
-{
-        if (ver != DECOMP_INTERFACE_VER) {
-                err("Decompression module has incompatible");
-                err("interface version %d", ver);
-                err("Interface version %d is required", DECOMP_INTERFACE_VER);
-                return -EINVAL;
-        }
-
-        if (!ops)
-                return -EFAULT;
-
-        if (mmx && !ov51x_mmx_available) {
-                err("MMX not available on this system or kernel");
-                return -EINVAL;
-        }
-
-        lock_kernel();
-
-        if (ov518) {
-                if (mmx) {
-                        if (ov518_mmx_decomp_ops)
-                                goto err_in_use;
-                        else
-                                ov518_mmx_decomp_ops = ops;
-                } else {
-                        if (ov518_decomp_ops)
-                                goto err_in_use;
-                        else
-                                ov518_decomp_ops = ops;
-                }
-        } else {
-                if (mmx) {
-                        if (ov511_mmx_decomp_ops)
-                                goto err_in_use;
-                        else
-                                ov511_mmx_decomp_ops = ops;
-                } else {
-                        if (ov511_decomp_ops)
-                                goto err_in_use;
-                        else
-                                ov511_decomp_ops = ops;
-                }
-        }
-
-        unlock_kernel();
-        return 0;
-
-err_in_use:
-        unlock_kernel();
-        return -EBUSY;
-}
-
-void
-ov511_deregister_decomp_module(int ov518, int mmx)
-{
-        lock_kernel();
-
-        if (ov518) {
-                if (mmx)
-                        ov518_mmx_decomp_ops = NULL;
-                else
-                        ov518_decomp_ops = NULL;
-        } else {
-                if (mmx)
-                        ov511_mmx_decomp_ops = NULL;
-                else
-                        ov511_decomp_ops = NULL;
-        }
-
-        unlock_kernel();
-}
-
 static int __init
 usb_ov511_init(void)
 {
@@ -6123,5 +5933,3 @@ usb_ov511_exit(void)
 module_init(usb_ov511_init);
 module_exit(usb_ov511_exit);
 
-EXPORT_SYMBOL(ov511_register_decomp_module);
-EXPORT_SYMBOL(ov511_deregister_decomp_module);