linux-kernel - Why SCSI module needed for PCI-IDE ATA only disks ?

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Message-ID: <457492B2.2050107@ccr.jussieu.fr>
Date:	Mon, 04 Dec 2006 22:27:14 +0100
From:	Bernard Pidoux <pidoux@....jussieu.fr>
To:	linux-kernel@...r.kernel.org
Subject: Why SCSI module needed for PCI-IDE ATA only disks ?

I am asking why need to compile the following modules while I do not
have any SCSI device ?

Modules Loaded

rose netrom mkiss ax25 crc16 mach64 drm nfsd exportfs lockd nfs_acl
sunrpc ipv6 snd_seq_dummy snd_seq_oss snd_seq_midi_event snd_seq
ne2k_pci 8390 snd_pcm_oss snd_mixer_oss snd_ens1371 gameport snd_rawmidi
snd_seq_device snd_ac97_codec snd_ac97_bus af_packet snd_pcm snd_timer
snd_page_alloc snd soundcore floppy ide_cd binfmt_misc loop supermount

ahci ata_piix libata scsi_mod dm_mod

cpufreq_ondemand cpufreq_conservative cpufreq_powersave speedstep_lib
freq_table intel_agp agpgart uhci_hcd usbcore evdev tsdev ext3 jbd

Hardware is :

00:00.0 Host bridge: Intel Corporation 440BX/ZX/DX - 82443BX/ZX/DX Host
bridge (rev 03)
00:01.0 PCI bridge: Intel Corporation 440BX/ZX/DX - 82443BX/ZX/DX AGP
bridge (rev 03)
00:04.0 ISA bridge: Intel Corporation 82371AB/EB/MB PIIX4 ISA (rev 02)
00:04.1 IDE interface: Intel Corporation 82371AB/EB/MB PIIX4 IDE (rev 01)
00:04.2 USB Controller: Intel Corporation 82371AB/EB/MB PIIX4 USB (rev 01)
00:04.3 Bridge: Intel Corporation 82371AB/EB/MB PIIX4 ACPI (rev 02)
00:0b.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL-8029(AS)
00:0c.0 Multimedia audio controller: Ensoniq ES1371 [AudioPCI-97] (rev 06)
00:0d.0 Mass storage controller: Promise Technology, Inc. PDC20262
(FastTrak66/Ultra66) (rev 01)
01:00.0 VGA compatible controller: ATI Technologies Inc 3D Rage Pro AGP
1X/2X (rev 5c)

ata_piix needs scsi_mod

When making menuconfig, the need to select SCSI submenu options seems
rather surprising to me for an IDE ATA disk only system.

Bernard Pidoux

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