Hi.
Seems cx18 module has incorrect .xceive_pin value for card,
as i see lots of i2c errors in dmesg from xc2028.
i'm using 2.6.32.2, my hardware is:

# lspci -vnns 00:09.0
00:09.0 Multimedia video controller [0400]: Conexant Systems, Inc. CX23418 
Single-Chip MPEG-2 Encoder with Integrated Analog Video/Broadcast Audio Decoder 
[14f1:5b7a]
        Subsystem: LeadTek Research Inc. Device [107d:6f27]
        Flags: bus master, medium devsel, latency 64, IRQ 17
        Memory at f0000000 (32-bit, non-prefetchable) [size=64M]
        Capabilities: [44] Vital Product Data
        Capabilities: [4c] Power Management version 2
        Kernel driver in use: cx18
        Kernel modules: cx18

Following fixes this problem for me, the rest seems working:

diff --git a/drivers/media/video/cx18/cx18-cards.c b/drivers/media/video/cx18/cx18-cards.c
index f11e47a..f808fb6 100644
--- a/drivers/media/video/cx18/cx18-cards.c
+++ b/drivers/media/video/cx18/cx18-cards.c
@@ -393,7 +393,7 @@ static const struct cx18_card cx18_card_leadtek_pvr2100 = {
 	.gpio_init.direction = 0x7,
 	.gpio_audio_input = { .mask   = 0x7,
 			      .tuner  = 0x6, .linein = 0x2, .radio  = 0x2 },
-	.xceive_pin = 15,
+	.xceive_pin = 1,
 	.pci_list = cx18_pci_leadtek_pvr2100,
 	.i2c = &cx18_i2c_std,
 };
-- 

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