Bug#479217: linux-latest-2.6: 40-pin cable bug still present in -4
tags 479217 patch thanks It appears that I've found the reason why the patched kernel still falls back to 40-wire cable. The patch applied to the Debian package only changes drivers/ide/piix.c. The initially suggested (and not applied currently) patch was for drivers/ata/ata_piix.c. For convenience, the missing ata_piix patch can be fetched from http://marc.info/?l=git-commits-headm=120915557002138w=2 or http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=01ce2601e4ba354fe1e25bb940817570d0c8ed4f;hp=a6116c9e60978a6deaa20691c67ffed727e50df1 I tried to integrate this in the build process somehow, but the patch system used is alien to me and I failed. Please include that patch in a subsequent package release. -- damJabberID: [EMAIL PROTECTED] signature.asc Description: Digital signature
Bug#479217: linux-latest-2.6: 40-pin cable bug still present in -4
On Fri, May 30, 2008 at 02:52:02PM +0300, Damyan Ivanov wrote: tags 479217 patch thanks It appears that I've found the reason why the patched kernel still falls back to 40-wire cable. The patch applied to the Debian package only changes drivers/ide/piix.c. The initially suggested (and not applied currently) patch was for drivers/ata/ata_piix.c. For convenience, the missing ata_piix patch can be fetched from http://marc.info/?l=git-commits-headm=120915557002138w=2 or http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=01ce2601e4ba354fe1e25bb940817570d0c8ed4f;hp=a6116c9e60978a6deaa20691c67ffed727e50df1 I tried to integrate this in the build process somehow, but the patch system used is alien to me and I failed. Please include that patch in a subsequent package release. -- damJabberID: [EMAIL PROTECTED] no that is a wrong analysis. we haven't switched yet to pata. the bug is on the ide side, where the short cable detection patch seemed not to have worked out. -- maks -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of unsubscribe. Trouble? Contact [EMAIL PROTECTED]
Bug#479217: linux-latest-2.6: 40-pin cable bug still present in -4
Package: linux-latest-2.6 Version: 2.6.25-4 Followup-For: Bug #479217 [EMAIL PROTECTED]:~$ dmesg | egrep 'Linux version|cable' [0.00] Linux version 2.6.25-2-686 (Debian 2.6.25-4) ([EMAIL PROTECTED]) (gcc version 4.1.3 20080420 (prerelease) (Debian 4.1.2-22)) #1 SMP Tue May 27 15:38:35 UTC 2008 [5.060487] ata2.00: limited to UDMA/33 due to 40-wire cable -- System Information: Debian Release: lenny/sid APT prefers unstable APT policy: (500, 'unstable'), (1, 'experimental') Architecture: i386 (i686) Kernel: Linux 2.6.25-2-686 (SMP w/1 CPU core) Locale: LANG=en_CA.UTF-8, LC_CTYPE=en_CA.UTF-8 (charmap=UTF-8) Shell: /bin/sh linked to /bin/bash -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of unsubscribe. Trouble? Contact [EMAIL PROTECTED]
Bug#479217: linux-latest-2.6: 40-pin cable bug still present in -4
On Wed, May 28, 2008 at 06:35:06AM -0300, Ben Armstrong wrote: Package: linux-latest-2.6 Version: 2.6.25-4 Followup-For: Bug #479217 [EMAIL PROTECTED]:~$ dmesg | egrep 'Linux version|cable' [0.00] Linux version 2.6.25-2-686 (Debian 2.6.25-4) ([EMAIL PROTECTED]) (gcc version 4.1.3 20080420 (prerelease) (Debian 4.1.2-22)) #1 SMP Tue May 27 15:38:35 UTC 2008 [5.060487] ata2.00: limited to UDMA/33 due to 40-wire cable please report upstream, as we just merged the upstream patch - bugzilla.kernel.org thanks -- maks -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of unsubscribe. Trouble? Contact [EMAIL PROTECTED]
Bug#479217: [Debian-eeepc-devel] Bug#479217: linux-latest-2.6: 40-pin cable bug still present in -4
notfixed 479217 2.6.25-2 reopen 479217 thanks -=| Ben Armstrong, Wed, May 28, 2008 at 06:35:06AM -0300 |=- Package: linux-latest-2.6 Version: 2.6.25-4 Followup-For: Bug #479217 [EMAIL PROTECTED]:~$ dmesg | egrep 'Linux version|cable' [0.00] Linux version 2.6.25-2-686 (Debian 2.6.25-4) ([EMAIL PROTECTED]) (gcc version 4.1.3 20080420 (prerelease) (Debian 4.1.2-22)) #1 SMP Tue May 27 15:38:35 UTC 2008 [5.060487] ata2.00: limited to UDMA/33 due to 40-wire cable Same here. This is the test case in the Git commit: Before patch: $ dd if=/dev/sda of=/dev/null bs=2M count=64 iflag=direct 134217728 bytes (134 MB) copied, 5.29612 s, 25.3 MB/s After patch: $ dd if=/dev/sda of=/dev/null bs=2M count=64 iflag=direct 134217728 bytes (134 MB) copied, 3.94955 s, 34.0 MB/s This is what I observe: 134217728 bytes (134MB) copied, 4.85051 s, 27.7 MB/s A bit higher than 25.3 MB/s, yes, but still far from 34.0 MB/s. And I see the limited UDMA/33 due to 40-wire cable too. lspci -n shows the same IDs: 00:1f.2 IDE interface [0101]: Intel Corporation 82801FBM (ICH6M) SATA Controller [8086:2653] (rev 04) (prog-if 80 [Master]) Subsystem: ASUSTeK Computer Inc. Device [1043:82d8] Flags: bus master, 66MHz, medium devsel, latency 0, IRQ 19 I did a naive attempt to trace the problem, please don't laugh :) The limited to UDMA/33 due to 40-wire cable message seems to come from drivers/ata/libata-core.c:4141, but it is only shown if cable_is_40wire() returns true. cable_is_40wire() should return false in EeePC case as the cable is ATA_CBL_PATA40_SHORT (or at least the patch makes ich_pata_cable_detect() return that). So I am puzzled (no surprises here). Either ich_pata_cable_detect is not used, or something else is going on. Hopefully people with hands in the kernel code will have some clues. -- damJabberID: [EMAIL PROTECTED] signature.asc Description: Digital signature
