linux-kernel - [PATCH 5.17 011/219] media: si2157: unknown chip version Si2147-A30 ROM 0x50

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Date:   Mon, 18 Apr 2022 14:09:40 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Piotr Chmura <chmooreck@...il.com>,
        Robert Schlabbach <robert_s@....net>,
        Mauro Carvalho Chehab <mchehab@...nel.org>
Subject: [PATCH 5.17 011/219] media: si2157: unknown chip version Si2147-A30 ROM 0x50

From: Piotr Chmura <chmooreck@...il.com>

commit 3ae87d2f25c0e998da2721ce332e2b80d3d53c39 upstream.

Fix firmware file names assignment in si2157 tuner, allow for running
devices without firmware files needed.

modprobe gives error: unknown chip version Si2147-A30 ROM 0x50
Device initialization is interrupted.

Caused by:
1. table si2157_tuners has swapped fields rom_id and required vs struct
   si2157_tuner_info.
2. both firmware file names can be null for devices with
   required == false - device uses build-in firmware in this case

Tested on this device:
	m07ca:1871 AVerMedia Technologies, Inc. TD310 DVB-T/T2/C dongle

[mchehab: fix mangled patch]
Link: https://bugzilla.kernel.org/show_bug.cgi?id=215726
Link: https://lore.kernel.org/lkml/5f660108-8812-383c-83e4-29ee0558d623@leemhuis.info/
Link: https://lore.kernel.org/linux-media/c4bcaff8-fbad-969e-ad47-e2c487ac02a1@gmail.com
Fixes: 1c35ba3bf972 ("media: si2157: use a different namespace for firmware")
Cc: stable@...r.kernel.org # 5.17.x
Signed-off-by: Piotr Chmura <chmooreck@...il.com>
Tested-by: Robert Schlabbach <robert_s@....net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@...nel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 drivers/media/tuners/si2157.c |   22 +++++++++++-----------
 1 file changed, 11 insertions(+), 11 deletions(-)

--- a/drivers/media/tuners/si2157.c
+++ b/drivers/media/tuners/si2157.c
@@ -77,16 +77,16 @@ err_mutex_unlock:
 }
 
 static const struct si2157_tuner_info si2157_tuners[] = {
-	{ SI2141, false, 0x60, SI2141_60_FIRMWARE, SI2141_A10_FIRMWARE },
-	{ SI2141, false, 0x61, SI2141_61_FIRMWARE, SI2141_A10_FIRMWARE },
-	{ SI2146, false, 0x11, SI2146_11_FIRMWARE, NULL },
-	{ SI2147, false, 0x50, SI2147_50_FIRMWARE, NULL },
-	{ SI2148, true,  0x32, SI2148_32_FIRMWARE, SI2158_A20_FIRMWARE },
-	{ SI2148, true,  0x33, SI2148_33_FIRMWARE, SI2158_A20_FIRMWARE },
-	{ SI2157, false, 0x50, SI2157_50_FIRMWARE, SI2157_A30_FIRMWARE },
-	{ SI2158, false, 0x50, SI2158_50_FIRMWARE, SI2158_A20_FIRMWARE },
-	{ SI2158, false, 0x51, SI2158_51_FIRMWARE, SI2158_A20_FIRMWARE },
-	{ SI2177, false, 0x50, SI2177_50_FIRMWARE, SI2157_A30_FIRMWARE },
+	{ SI2141, 0x60, false, SI2141_60_FIRMWARE, SI2141_A10_FIRMWARE },
+	{ SI2141, 0x61, false, SI2141_61_FIRMWARE, SI2141_A10_FIRMWARE },
+	{ SI2146, 0x11, false, SI2146_11_FIRMWARE, NULL },
+	{ SI2147, 0x50, false, SI2147_50_FIRMWARE, NULL },
+	{ SI2148, 0x32, true,  SI2148_32_FIRMWARE, SI2158_A20_FIRMWARE },
+	{ SI2148, 0x33, true,  SI2148_33_FIRMWARE, SI2158_A20_FIRMWARE },
+	{ SI2157, 0x50, false, SI2157_50_FIRMWARE, SI2157_A30_FIRMWARE },
+	{ SI2158, 0x50, false, SI2158_50_FIRMWARE, SI2158_A20_FIRMWARE },
+	{ SI2158, 0x51, false, SI2158_51_FIRMWARE, SI2158_A20_FIRMWARE },
+	{ SI2177, 0x50, false, SI2177_50_FIRMWARE, SI2157_A30_FIRMWARE },
 };
 
 static int si2157_load_firmware(struct dvb_frontend *fe,
@@ -178,7 +178,7 @@ static int si2157_find_and_load_firmware
 		}
 	}
 
-	if (!fw_name && !fw_alt_name) {
+	if (required && !fw_name && !fw_alt_name) {
 		dev_err(&client->dev,
 			"unknown chip version Si21%d-%c%c%c ROM 0x%02x\n",
 			part_id, cmd.args[1], cmd.args[3], cmd.args[4], rom_id);