Messages in this thread | | | Date | Sat, 27 Nov 2010 12:46:47 +0900 | Subject | Re: [RESEND][BUG][PATCH]-rc: USB: yurex: add .llseek fop to file_operations | From | Tomoki Sekiyama <> |
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2010/11/27 Arnd Bergmann <arnd@arndb.de>: > On Thursday 25 November 2010 18:16:13 Greg KH wrote: >> On Fri, Nov 26, 2010 at 01:11:05AM +0900, Tomoki Sekiyama wrote: >> > Hi Greg-KH, >> > Sorry for resending this; To: was not enough. >> > >> > https://bugzilla.kernel.org/show_bug.cgi?id=23512 >> > >> > Default llseek operation behavior was changed by the patch named >> > "vfs: make no_llseek the default" after the yurex driver was merged, >> > so the llseek to yurex is now ignored. >> > >> > This patch add llseek fop with default_llseek to yurex driver >> > to catch up to the change. >> > >> > Signed-off-by: Tomoki Sekiyama <tomoki.sekiyama@gmail.com> >> >> It's in my queue, sorry, been without power and water at home for a few >> days, will catch up on this stuff next week... > > I was out most of the week, so I didn't get to look at it either. > Is there an actual bug here caused by having no .llseek function? > > As far as I can tell, you don't really want to seek this file > anyway, so the default behaviour of disallowing llseek would actually > make more sense.
I need seek because the device notifies the update of the sensor's value by fasync, then the user can rewind(seek to 0) and re-read the file.
Thanks, -- Tomoki Sekiyama
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