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-rw-r--r--Documentation/rtc.txt4
1 files changed, 2 insertions, 2 deletions
diff --git a/Documentation/rtc.txt b/Documentation/rtc.txt
index e20b19c..804a7cf 100644
--- a/Documentation/rtc.txt
+++ b/Documentation/rtc.txt
@@ -182,8 +182,8 @@ driver returns ENOIOCTLCMD. Some common examples:
since the frequency is stored in the irq_freq member of the rtc_device
structure. Your driver needs to initialize the irq_freq member during
init. Make sure you check the requested frequency is in range of your
- hardware in the irq_set_freq function. If you cannot actually change
- the frequency, just return -ENOTTY.
+ hardware in the irq_set_freq function. If it isn't, return -EINVAL. If
+ you cannot actually change the frequency, do not define irq_set_freq.
If all else fails, check out the rtc-test.c driver!
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