From e7ecd435692ca9bde9d124be30b3a26e672ea6c2 Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Wed, 19 May 2010 15:38:58 +0200 Subject: [PATCH] libata: disable ATAPI AN by default There are ATAPI devices which raise AN when hit by commands issued by open(). This leads to infinite loop of AN -> MEDIA_CHANGE uevent -> udev open() to check media -> AN. Both ACS and SerialATA standards don't define in which case ATAPI devices are supposed to raise or not raise AN. They both list media insertion event as a possible use case for ATAPI ANs but there is no clear description of what constitutes such events. As such, it seems a bit too naive to export ANs directly to userland as MEDIA_CHANGE events without further verification (which should behave similarly to windows as it apparently is the only thing that some hardware vendors are testing against). This patch adds libata.atapi_an module parameter and disables ATAPI AN by default for now. Signed-off-by: Tejun Heo Cc: Kay Sievers Cc: Nick Bowler Cc: David Zeuthen Cc: stable@kernel.org Signed-off-by: Jeff Garzik --- Reading git-format-patch failed