linux-kernel - [PATCH 3.2 77/79] [media] cx231xx: Fix the max number of interfaces

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Date:   Sun, 11 Feb 2018 04:20:06 +0000
From:   Ben Hutchings <ben@...adent.org.uk>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
CC:     akpm@...ux-foundation.org,
        "Mauro Carvalho Chehab" <m.chehab@...sung.com>
Subject: [PATCH 3.2 77/79] [media] cx231xx: Fix the max number of interfaces

3.2.99-rc1 review patch.  If anyone has any objections, please let me know.

------------------

From: Mauro Carvalho Chehab <m.chehab@...sung.com>

commit 139d28826b8e2bc7a9232fde0d2f14812914f501 upstream.

The max number of interfaces was read from the wrong descriptor.

Signed-off-by: Mauro Carvalho Chehab <m.chehab@...sung.com>
[bwh: Backported to 3.2: adjust filename]
Signed-off-by: Ben Hutchings <ben@...adent.org.uk>
---
 drivers/media/video/cx231xx/cx231xx-cards.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

--- a/drivers/media/video/cx231xx/cx231xx-cards.c
+++ b/drivers/media/video/cx231xx/cx231xx-cards.c
@@ -1070,8 +1070,7 @@ static int cx231xx_usb_probe(struct usb_
 	dev->vbi_or_sliced_cc_mode = 0;
 
 	/* get maximum no.of IAD interfaces */
-	assoc_desc = udev->actconfig->intf_assoc[0];
-	dev->max_iad_interface_count = assoc_desc->bInterfaceCount;
+	dev->max_iad_interface_count = udev->config->desc.bNumInterfaces;
 
 	/* init CIR module TBD */