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| author | Mike Frysinger <vapier.adi@gmail.com> | 2008-02-06 01:38:56 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2008-02-06 10:41:14 -0800 |
| commit | 8a0ba4e0178f4d87445b5527bfefdd5437b974c6 (patch) | |
| tree | 53454aa1f7ced9da40864b22c6488be5ef1ea9f3 /Documentation/rtc.txt | |
| parent | fcd8db002f784706e9aa190d0b6350f868e61c32 (diff) | |
| download | lwn-8a0ba4e0178f4d87445b5527bfefdd5437b974c6.tar.gz lwn-8a0ba4e0178f4d87445b5527bfefdd5437b974c6.zip | |
rtc: update documentation wrt irq_set_freq
Document the proper use of the irq_set_freq function.
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Cc: David Brownell <david-b@pacbell.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'Documentation/rtc.txt')
| -rw-r--r-- | Documentation/rtc.txt | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/Documentation/rtc.txt b/Documentation/rtc.txt index e20b19c1b60d..804a7cf6bd12 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! |