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Date: Tue, 27 Oct 2015 16:20:10 +0100 From: Richard Weinberger <richard.weinberger@...il.com> To: Muni Sekhar <munisekharrms@...il.com> Cc: Clemens Ladisch <clemens@...isch.de>, LKML <linux-kernel@...r.kernel.org> Subject: Re: character driver - poll() timeout On Tue, Oct 27, 2015 at 3:56 PM, Muni Sekhar <munisekharrms@...il.com> wrote: > On Tue, Oct 27, 2015 at 1:41 PM, Clemens Ladisch <clemens@...isch.de> wrote: >> Muni Sekhar wrote: >>> Is it possible to print the timeout value in character driver poll() API? >> >> No. Your driver's poll callback never waits. >> >> Why do you think you need this value? > > I need to find out when exactly driver's poll callback returned timeout. Kernel's poll() is just the generic backend for any kind of polling API. Like select(), epoll or poll(). If your driver needs to know the timeout, it is broken by design. -- Thanks, //richard -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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