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Date: Fri, 29 Jun 2007 09:20:16 +0200 From: DervishD <lkml@...vishd.net> To: Kay Sievers <kay.sievers@...y.org> Cc: Linux-kernel <linux-kernel@...r.kernel.org> Subject: Re: USB card reader and HAL Hi Kay :) * Kay Sievers <kay.sievers@...y.org> dixit: > On 6/28/07, DervishD <lkml@...vishd.net> wrote: > > When I insert a card in the reader, it is not detected, no udev > >event is generated and I have to do things like "hdparm -z /dev/sda" to > >"probe" the card. Moreover, I have to do the same when removing the card > >or the /dev/sdaX nodes are not deleted. > > > > Is HAL the only way of making it work? Is there any CONFIG_ thing > >I've forgotten in my kernel? > > You have to open() the device node to trigger events from the kernel, > the kernel itself will not do that for you. HAL polls the device every > few seconds. So, opening the node and checking for ENOMEDIUM is the only solution... Polling looks like a waste of time, and given that I use the reader once a month or so, HAL will be a waste of resources. I'll resort to manually do "hdparm -z" (or something similar) when I need to insert or remove a card. Thanks for confirming, Kay :)) Raúl Núñez de Arenas Coronado -- Linux Registered User 88736 | http://www.dervishd.net It's my PC and I'll cry if I want to... RAmen! - 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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