Merge back earlier cpufreq fixes for v4.4.

[firefly-linux-kernel-4.4.55.git] / Documentation / scsi / st.txt

diff --git a/Documentation/scsi/st.txt b/Documentation/scsi/st.txt
index f29fa550665af92dba9248113de5be639c10c885..b3211af63b7956c1f4325a87fb08b52de959692a 100644 (file)
--- a/Documentation/scsi/st.txt
+++ b/Documentation/scsi/st.txt
@@ -569,7 +569,9 @@ Debugging code is now compiled in by default but debugging is turned off
 with the kernel module parameter debug_flag defaulting to 0.  Debugging
 can still be switched on and off with an ioctl.  To enable debug at
 module load time add debug_flag=1 to the module load options, the
-debugging output is not voluminous.
+debugging output is not voluminous. Debugging can also be enabled
+and disabled by writing a '0' (disable) or '1' (enable) to the sysfs
+file /sys/bus/scsi/drivers/st/debug_flag.
 
 If the tape seems to hang, I would be very interested to hear where
 the driver is waiting. With the command 'ps -l' you can see the state