linux-kernel - [PATCH 1/5] staging: media: zoran: remove detect_guest

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Message-Id: <20210518124113.1823055-1-clabbe@baylibre.com>
Date:   Tue, 18 May 2021 12:41:09 +0000
From:   Corentin Labbe <clabbe@...libre.com>
To:     gregkh@...uxfoundation.org, mchehab@...nel.org
Cc:     linux-kernel@...r.kernel.org, linux-media@...r.kernel.org,
        linux-staging@...ts.linux.dev, mjpeg-users@...ts.sourceforge.net,
        Corentin Labbe <clabbe@...libre.com>
Subject: [PATCH 1/5] staging: media: zoran: remove detect_guest_activity

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

Signed-off-by: Corentin Labbe <clabbe@...libre.com>
---
 drivers/staging/media/zoran/zoran_device.c | 46 ----------------------
 drivers/staging/media/zoran/zoran_device.h |  2 -
 2 files changed, 48 deletions(-)

diff --git a/drivers/staging/media/zoran/zoran_device.c b/drivers/staging/media/zoran/zoran_device.c
index cf788d9cd1df..7d2718744d18 100644
--- a/drivers/staging/media/zoran/zoran_device.c
+++ b/drivers/staging/media/zoran/zoran_device.c
@@ -166,52 +166,6 @@ static void dump_guests(struct zoran *zr)
 	}
 }
 
-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
  */
diff --git a/drivers/staging/media/zoran/zoran_device.h b/drivers/staging/media/zoran/zoran_device.h
index 24be19a61b6d..6c5d70238228 100644
--- a/drivers/staging/media/zoran/zoran_device.h
+++ b/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);
 
-- 
2.26.3