Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...

[GitHub/mt8127/android_kernel_alcatel_ttab.git] / Documentation / dvb / bt8xx.txt

diff --git a/Documentation/dvb/bt8xx.txt b/Documentation/dvb/bt8xx.txt
index ecb47adda0638b9ac4a79ddc7ae7537801edf24a..b7b1d1b1da469a527eb4940ce86b9834deb8a8ee 100644 (file)
--- a/Documentation/dvb/bt8xx.txt
+++ b/Documentation/dvb/bt8xx.txt
@@ -78,6 +78,18 @@ Example:
 For a full list of card ID's please see Documentation/video4linux/CARDLIST.bttv.
 In case of further problems please subscribe and send questions to the mailing list: linux-dvb@linuxtv.org.
 
+2c) Probing the cards with broken PCI subsystem ID
+--------------------------------------------------
+There are some TwinHan cards that the EEPROM has become corrupted for some
+reason. The cards do not have correct PCI subsystem ID. But we can force
+probing the cards with broken PCI subsystem ID
+
+       $ echo 109e 0878 $subvendor $subdevice > \
+               /sys/bus/pci/drivers/bt878/new_id
+
+109e: PCI_VENDOR_ID_BROOKTREE
+0878: PCI_DEVICE_ID_BROOKTREE_878
+
 Authors: Richard Walker,
         Jamie Honan,
         Michael Hunold,