media: staging: media: zoran: remove detect_guest_activity

The detect_guest_activity function is no longer used, so lets removed it.

[hverkuil: remove dump_guests() as well as that too is now unused]
Signed-off-by: Corentin Labbe <clabbe@baylibre.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

drivers/staging/media/zoran/zoran_device.c

@@ -147,71 +147,6 @@ int post_office_read(struct zoran *zr, unsigned int guest, unsigned int reg)
 	return btread(ZR36057_POR) & 0xFF;
 }
 
-/*
- * detect guests
- */
-
-static void dump_guests(struct zoran *zr)
-{
-	if (zr36067_debug > 2) {
-		int i, guest[8];
-
-		/* do not print random data */
-		guest[0] = 0;
-
-		for (i = 1; i < 8; i++) /* Don't read jpeg codec here */
-			guest[i] = post_office_read(zr, i, 0);
-
-		pci_info(zr->pci_dev, "Guests: %*ph\n", 8, guest);
-	}
-}
-
-void detect_guest_activity(struct zoran *zr)
-{
-	int timeout, i, j, res, guest[8], guest0[8], change[8][3];
-	ktime_t t0, t1;
-
-	/* do not print random data */
-	guest[0] = 0;
-	guest0[0] = 0;
-
-	dump_guests(zr);
-	pci_info(zr->pci_dev, "Detecting guests activity, please wait...\n");
-	for (i = 1; i < 8; i++) /* Don't read jpeg codec here */
-		guest0[i] = guest[i] = post_office_read(zr, i, 0);
-
-	timeout = 0;
-	j = 0;
-	t0 = ktime_get();
-	while (timeout < 10000) {
-		udelay(10);
-		timeout++;
-		for (i = 1; (i < 8) && (j < 8); i++) {
-			res = post_office_read(zr, i, 0);
-			if (res != guest[i]) {
-				t1 = ktime_get();
-				change[j][0] = ktime_to_us(ktime_sub(t1, t0));
-				t0 = t1;
-				change[j][1] = i;
-				change[j][2] = res;
-				j++;
-				guest[i] = res;
-			}
-		}
-		if (j >= 8)
-			break;
-	}
-
-	pci_info(zr->pci_dev, "Guests: %*ph\n", 8, guest0);
-
-	if (j == 0) {
-		pci_info(zr->pci_dev, "No activity detected.\n");
-		return;
-	}
-	for (i = 0; i < j; i++)
-		pci_info(zr->pci_dev, "%6d: %d => 0x%02x\n", change[i][0], change[i][1], change[i][2]);
-}
-
 /*
  * JPEG Codec access
  */

drivers/staging/media/zoran/zoran_device.h

@@ -20,8 +20,6 @@ extern int post_office_wait(struct zoran *zr);
 extern int post_office_write(struct zoran *zr, unsigned int guest, unsigned int reg, unsigned int value);
 extern int post_office_read(struct zoran *zr, unsigned int guest, unsigned int reg);
 
-extern void detect_guest_activity(struct zoran *zr);
-
 extern void jpeg_codec_sleep(struct zoran *zr, int sleep);
 extern int jpeg_codec_reset(struct zoran *zr);