Commit Graph

173020 Commits

Author SHA1 Message Date
Matt Carlson
026a6c2164 tg3: Clean tg3_init_one()
Tg3's firmware is no longer loaded from tg3_init_one().  Remove the
error path that releases the firmware back to the system.

Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Reviewed-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-12-03 13:18:07 -08:00
Matt Carlson
94c982bd9f tg3: Use pci_read_vpd() instead of private method
If the driver needs to use PCI configuration space to read the VPD data,
the accesses could collide with the pci_read_vpd() function.  This patch
converts the driver to use pci_read_vpd() to avoid any potential
collisions.

Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Reviewed-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-12-03 13:18:06 -08:00
Matt Carlson
141518c958 tg3: Add some VPD preprocessor constants
This patch cleans up the VPD code by creating preprocessor definitions
and using them in the place of hardcoded constants.

Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Reviewed-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-12-03 13:18:04 -08:00
Matt Carlson
b703df6f62 tg3: Add 57765 asic rev
This patch adds the 57765 asic revision.

Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-12-03 13:18:03 -08:00
Matt Carlson
19cfaecc09 tg3: Make TSS enable independent of MSI-X enable
The 57765 asic rev has MSI-X capability, but does not support TSS.  This
patch changes the tx paths so that TSS is explicitly mentioned, rather
than implied through the ENABLE_MSIX flag.

Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-12-03 13:18:02 -08:00
Joe Perches
8e95a2026f drivers/net: Move && and || to end of previous line
Only files where David Miller is the primary git-signer.
wireless, wimax, ixgbe, etc are not modified.

Compile tested x86 allyesconfig only
Not all files compiled (not x86 compatible)

Added a few > 80 column lines, which I ignored.
Existing checkpatch complaints ignored.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-12-03 13:18:01 -08:00
Ajit Khaparde
3454f83583 be2net: Bump up the driver version number
Signed-off-by: Ajit Khaparde <ajitk@serverengines.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-12-03 13:17:56 -08:00
Bartlomiej Zolnierkiewicz
c4d8a20022 pata_via: clear UDMA transfer mode bit for PIO and MWDMA
Fix register naming while at it.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2009-12-03 16:13:39 -05:00
Bartlomiej Zolnierkiewicz
750c7136ea pata_sis: Power Management fix
Call sis_fixup() on resume.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2009-12-03 16:12:49 -05:00
Bartlomiej Zolnierkiewicz
0826ef5f6f pata_rz1000: Power Management fix
Fix ->resume method to re-enable & re-init PCI device properly
before doing chipset specific setup.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2009-12-03 16:12:35 -05:00
Bartlomiej Zolnierkiewicz
dd4a43c979 pata_radisys: fix UDMA handling
Set correct bits to switch between UDMA2 and UDMA4.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2009-12-03 16:11:24 -05:00
Bartlomiej Zolnierkiewicz
a809c68752 pata_ns87415: Power Management fix
Fix ->resume method to do chipset specific setup.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2009-12-03 16:08:30 -05:00
Bartlomiej Zolnierkiewicz
2a2beac928 pata_marvell: fix marvell_pre_reset() documentation
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2009-12-03 16:07:12 -05:00
Bartlomiej Zolnierkiewicz
9c7e0d22c5 pata_legacy: add pointers to QDI65x0 documentation
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2009-12-03 16:06:47 -05:00
Bartlomiej Zolnierkiewicz
6809e7301f pata_legacy: fix access to control register for QDI6580
We need to mask out the port offset from the port number
cached in ld_qdi->timing.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2009-12-03 16:06:14 -05:00
Bartlomiej Zolnierkiewicz
43c7d17ee7 pata_legacy: fix QDI6580DP support
Dual port QDI6580 has shared PIO timings for master/slave
devices so it needs to use custom ->qc_issue method.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2009-12-03 16:06:00 -05:00
Bartlomiej Zolnierkiewicz
13a28c15dd pata_it8213: fix it8213_pre_reset() documentation
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2009-12-03 16:02:12 -05:00
Bartlomiej Zolnierkiewicz
e3f1d5cd11 pata_it8213: fix wrong MWDMA timings being programmed
Clear old MWDMA timings before programming new ones (IT8213
is a single port host so there is no need to check ap->port_no).

This change should be safe as this is how we have been doing
things in IDE it8213 host driver for years.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2009-12-03 16:01:39 -05:00
Bartlomiej Zolnierkiewicz
ed869ff0c7 pata_it8213: fix PIO2 underclocking
[ port of Sergei's fixes for pata_efar from commit 5f33b3b ]

Fix the PIO mode 2 using mode 0 timings -- this driver should enable the
fast timing bank starting with PIO2, just like the PIIX/ICH drivers do.
Also, fix/rephrase some comments while at it.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2009-12-03 16:01:13 -05:00
Bartlomiej Zolnierkiewicz
088ccb53a3 pata_it8213: fix wrong PIO timings being programmed
* do not clear PIO timings for master when programming slave
* program new PIO timings in the correct register nibble

Both changes should be safe as this is how we have been doing
things in IDE it8213 host driver for years.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2009-12-03 16:00:56 -05:00
Bartlomiej Zolnierkiewicz
e0ee792b75 pata_it8213: fix UDMA handling
Driver should program the cycle timing not the mode number
(doing the latter results in wrong timings being used).

There shouldn't be any problems with it as IDE it8213 host driver
has been doing it this way for years.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2009-12-03 15:59:25 -05:00
Bartlomiej Zolnierkiewicz
3915044468 pata_hpt3x3: Power Management fix
Fix ->resume method to re-enable & re-init PCI device properly
before doing chipset specific setup.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2009-12-03 15:58:53 -05:00
Bartlomiej Zolnierkiewicz
940a68de56 pata_cs5520: remove dead VDMA support
It has been dead for the last three years (== since the initial driver
merge) and probability that it will ever get fixed is quite low.

Since there is no reason to keep this dead code around any longer just
remove it (it can still be retrieved from the git history if necessary).

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2009-12-03 15:52:51 -05:00
Bartlomiej Zolnierkiewicz
dd221f9ce9 pata_efar: fix wrong MWDMA timings being programmed
Do not clear MWDMA timings for device on the other port when
programming slave device.

This change should be safe as this is how we have been doing
things in IDE slc90e66 host driver for years.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2009-12-03 15:50:51 -05:00
Bartlomiej Zolnierkiewicz
f79ff92649 pata_efar: fix wrong PIO timings being programmed
* do not clear PIO timings for master when programming slave
* do not clear PIO timings for device on the other port when
  programming slave device

Both changes should be safe as this is how we have been doing
things in IDE slc90e66 host driver for years.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2009-12-03 15:50:31 -05:00
Bartlomiej Zolnierkiewicz
6938594374 ata_piix: fix MWDMA handling on PIIX3
Fix erroneous check for ap->udma_mask in do_pata_set_dmamode()
resulting in controller not being programmed properly for MWDMA.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2009-12-03 15:44:31 -05:00
Ajit Khaparde
71d8d1b58a be2net: Support for WoL using magic packet after suspend.
Add support for WOL using Magic Packet after suspend is done.

Signed-off-by: Sarveshwar Bandi <sarveshwarb@serverengines.com>
Signed-off-by: Ajit Khaparde <ajitk@serverengines.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-12-03 12:39:21 -08:00
Ajit Khaparde
d744b44e21 be2net: Changes to print fw command opcode when command is failed by controller.
When a firmware command fails, only the failure codes are printed.
It is difficult to co-relate this to the actual command that has failed.
These changes will now print the command code that has failed.

Signed-off-by: Sarveshwar Bandi <sarveshwarb@serverengines.com>
Signed-off-by: Ajit Khaparde <ajitk@serverengines.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-12-03 12:39:20 -08:00
Eric W. Biederman
b099ce2602 net: Batch inet_twsk_purge
This function walks the whole hashtable so there is no point in
passing it a network namespace.  Instead I purge all timewait
sockets from dead network namespaces that I find.  If the namespace
is one of the once I am trying to purge I am guaranteed no new timewait
sockets can be formed so this will get them all.  If the namespace
is one I am not acting for it might form a few more but I will
call inet_twsk_purge again and  shortly to get rid of them.  In
any even if the network namespace is dead timewait sockets are
useless.

Move the calls of inet_twsk_purge into batch_exit routines so
that if I am killing a bunch of namespaces at once I will just
call inet_twsk_purge once and save a lot of redundant unnecessary
work.

My simple 4k network namespace exit test the cleanup time dropped from
roughly 8.2s to 1.6s.  While the time spent running inet_twsk_purge fell
to about 2ms.  1ms for ipv4 and 1ms for ipv6.

Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-12-03 12:23:47 -08:00
Eric W. Biederman
575f4cd5a5 net: Use rcu lookups in inet_twsk_purge.
While we are looking up entries to free there is no reason to take
the lock in inet_twsk_purge.  We have to drop locks and restart
occassionally anyway so adding a few more in case we get on the
wrong list because of a timewait move is no big deal.  At the
same time not taking the lock for long periods of time is much
more polite to the rest of the users of the hash table.

In my test configuration of killing 4k network namespaces
this change causes 4k back to back runs of inet_twsk_purge on an
empty hash table to go from roughly 20.7s to 3.3s, and the total
time to destroy 4k network namespaces goes from roughly 44s to
3.3s.

Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Acked-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-12-03 12:23:47 -08:00
Eric W. Biederman
e9c5158ac2 net: Allow fib_rule_unregister to batch
Refactor the code so fib_rules_register always takes a template instead
of the actual fib_rules_ops structure that will be used.  This is
required for network namespace support so 2 out of the 3 callers already
do this, it allows the error handling to be made common, and it allows
fib_rules_unregister to free the template for hte caller.

Modify fib_rules_unregister to use call_rcu instead of syncrhonize_rcu
to allw multiple namespaces to be cleaned up in the same rcu grace
period.

Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-12-03 12:22:55 -08:00
Eric W. Biederman
3a765edadb netns: Add an explicit rcu_barrier to unregister_pernet_{device|subsys}
This allows namespace exit methods to batch work that comes requires an
rcu barrier using call_rcu without having to treat the
unregister_pernet_operations cases specially.

Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-12-03 12:22:03 -08:00
Eric W. Biederman
d79d792ef9 net: Allow xfrm_user_net_exit to batch efficiently.
xfrm.nlsk is provided by the xfrm_user module and is access via rcu from
other parts of the xfrm code.  Add xfrm.nlsk_stash a copy of xfrm.nlsk that
will never be set to NULL.  This allows the synchronize_net and
netlink_kernel_release to be deferred until a whole batch of xfrm.nlsk sockets
have been set to NULL.

Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-12-03 12:22:03 -08:00
Eric W. Biederman
04dc7f6be3 net: Move network device exit batching
Move network device exit batching from a special case in
net_namespace.c to using common mechanisms in dev.c

Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-12-03 12:22:02 -08:00
Eric W. Biederman
72ad937abd net: Add support for batching network namespace cleanups
- Add exit_list to struct net to support building lists of network
  namespaces to cleanup.

- Add exit_batch to pernet_operations to allow running operations only
  once during a network namespace exit.  Instead of once per network
  namespace.

- Factor opt ops_exit_list and ops_exit_free so the logic with cleanup
  up a network namespace does not need to be duplicated.

Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-12-03 12:22:01 -08:00
Patrick McHardy
8153a10c08 ipv4 05/05: add sysctl to accept packets with local source addresses
commit 8ec1e0ebe26087bfc5c0394ada5feb5758014fc8
Author: Patrick McHardy <kaber@trash.net>
Date:   Thu Dec 3 12:16:35 2009 +0100

    ipv4: add sysctl to accept packets with local source addresses

    Change fib_validate_source() to accept packets with a local source address when
    the "accept_local" sysctl is set for the incoming inet device. Combined with the
    previous patches, this allows to communicate between multiple local interfaces
    over the wire.

    Signed-off-by: Patrick McHardy <kaber@trash.net>

Signed-off-by: David S. Miller <davem@davemloft.net>
2009-12-03 12:14:38 -08:00
Patrick McHardy
5adef18091 net 04/05: fib_rules: allow to delete local rule
commit d124356ce314fff22a047ea334379d5105b2d834
Author: Patrick McHardy <kaber@trash.net>
Date:   Thu Dec 3 12:16:35 2009 +0100

    net: fib_rules: allow to delete local rule

    Allow to delete the local rule and recreate it with a higher priority. This
    can be used to force packets with a local destination out on the wire instead
    of routing them to loopback. Additionally this patch allows to recreate rules
    with a priority of 0.

    Combined with the previous patch to allow oif classification, a socket can
    be bound to the desired interface and packets routed to the wire like this:

    # move local rule to lower priority
    ip rule add pref 1000 lookup local
    ip rule del pref 0

    # route packets of sockets bound to eth0 to the wire independant
    # of the destination address
    ip rule add pref 100 oif eth0 lookup 100
    ip route add default dev eth0 table 100

    Signed-off-by: Patrick McHardy <kaber@trash.net>

Signed-off-by: David S. Miller <davem@davemloft.net>
2009-12-03 12:14:37 -08:00
Patrick McHardy
1b038a5e60 net 03/05: fib_rules: add oif classification
commit 68144d350f4f6c348659c825cde6a82b34c27a91
Author: Patrick McHardy <kaber@trash.net>
Date:   Thu Dec 3 12:05:25 2009 +0100

    net: fib_rules: add oif classification

    Support routing table lookup based on the flow's oif. This is useful to
    classify packets originating from sockets bound to interfaces differently.

    The route cache already includes the oif and needs no changes.

    Signed-off-by: Patrick McHardy <kaber@trash.net>

Signed-off-by: David S. Miller <davem@davemloft.net>
2009-12-03 12:14:36 -08:00
Patrick McHardy
491deb24bf net 02/05: fib_rules: rename ifindex/ifname/FRA_IFNAME to iifindex/iifname/FRA_IIFNAME
commit 229e77eec406ad68662f18e49fda8b5d366768c5
Author: Patrick McHardy <kaber@trash.net>
Date:   Thu Dec 3 12:05:23 2009 +0100

    net: fib_rules: rename ifindex/ifname/FRA_IFNAME to iifindex/iifname/FRA_IIFNAME

    The next patch will add oif classification, rename interface related members
    and attributes to reflect that they're used for iif classification.

    Signed-off-by: Patrick McHardy <kaber@trash.net>

Signed-off-by: David S. Miller <davem@davemloft.net>
2009-12-03 12:14:36 -08:00
Patrick McHardy
d285834001 net 01/05: fib_rules: rearrange struct fib_rule
commit b8952893d5d86f69c4e499d191b98c6658f64b0f
Author: Patrick McHardy <kaber@trash.net>
Date:   Thu Dec 3 12:05:22 2009 +0100

    net: fib_rules: rearrange struct fib_rule

    The ifname member is only used to resolve interface names and is not needed
    during rule lookups. The target and ctarget members however are used during
    rule lookups and are currently located in a second cacheline.

    Move ifname further to the end to make sure both target and ctarget are
    located in the same cacheline as other members used during rule lookups.

    The layout on 64 bit changes from:

    struct fib_rule {
    	...
            u32                        table;                /*    56     4 */
            u8                         action;               /*    60     1 */

            /* XXX 3 bytes hole, try to pack */

            /* --- cacheline 1 boundary (64 bytes) --- */
            u32                        target;               /*    64     4 */

            /* XXX 4 bytes hole, try to pack */

            struct fib_rule *          ctarget;              /*    72     8 */
            struct rcu_head            rcu;                  /*    80    16 */
            struct net *               fr_net;               /*    96     8 */
    };

    to:

    struct fib_rule {
    	...
            u32                        table;                /*    40     4 */
            u8                         action;               /*    44     1 */

            /* XXX 3 bytes hole, try to pack */

            u32                        target;               /*    48     4 */

            /* XXX 4 bytes hole, try to pack */

            struct fib_rule *          ctarget;              /*    56     8 */
            /* --- cacheline 1 boundary (64 bytes) --- */
            char                       ifname[16];           /*    64    16 */
            struct rcu_head            rcu;                  /*    80    16 */
            struct net *               fr_net;               /*    96     8 */

    };

    Signed-off-by: Patrick McHardy <kaber@trash.net>

Signed-off-by: David S. Miller <davem@davemloft.net>
2009-12-03 12:14:34 -08:00
Jens Axboe
2f5ea47712 cfq-iosched: fix compile problem with !CONFIG_CGROUP
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2009-12-03 21:07:17 +01:00
Alessandro Rubini
e0ee98513d ARM: 5846/1: MAINTAINERS: Add arm Nomadik support
Signed-off-by: Alessandro Rubini <rubini@unipv.it>
Acked-by: Andrea Gallo <andrea.gallo@stericsson.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-12-03 19:42:31 +00:00
Srinidhi Kasagar
48371cd3f4 ARM: 5845/1: l2x0: check whether l2x0 already enabled
If running in non-secure mode accessing
some registers of l2x0 will fault. So
check if l2x0 is already enabled, if so
do not access those secure registers.

Signed-off-by: srinidhi kasagar <srinidhi.kasagar@stericsson.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-12-03 19:42:30 +00:00
Leo Chen
1f739d7643 ARM: 5792/1: bcmring: clean up mach/io.h
removed old macro definition for io access, using
the generic macros defined in asm/io.h

Signed-off-by: Leo Hao Chen <leochen@broadcom.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-12-03 19:42:30 +00:00
Bartlomiej Zolnierkiewicz
95514fd8ff libata: add private driver field to struct ata_device
This brings struct ata_device in-line with struct ata_{port,host}.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2009-12-03 14:36:18 -05:00
Mark Nelson
7a02267e0f ahci: let users know that Promise PDC42819 support is limited to SATA devices
ahci can drive the Promise PDC42819, but obviously it can only use SATA
disks connected to this controller. The controller can actually support
SAS disks as well, but we only know how to use it in it's AHCI mode.

Add a message to let users know that because ahci is driving their chip
they can only use the SATA disks connected to this controller.

Signed-off-by: Mark Nelson <mdnelson8@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2009-12-03 14:36:17 -05:00
Sergei Shtylyov
89d3b3603b ata: use pci_dev->revision
Some places were using PCI_CLASS_REVISION instead of PCI_REVISION_ID, so
they weren't converted by commit 44c10138fd
(PCI: Change all drivers to use pci_device->revision).

Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2009-12-03 14:36:17 -05:00
Sergei Shtylyov
82beb5d894 pata_hpt366: fix timing register documentation
The comment in the driver actually describes HPT37x's timing register layout,
which is different from HPT36x.  Fix it and reformat the comment, while at it.

Bump the driver version, accounting for several patches that forgot to do it.

Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2009-12-03 14:36:17 -05:00
Bartlomiej Zolnierkiewicz
9cd13bdbae libata: add comment documenting PIO latency issues on UP
Based on:
http://lkml.indiana.edu/hypermail/linux/kernel/0908.2/01420.html

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2009-12-03 14:36:16 -05:00
Sergei Shtylyov
5600c70e57 pata_hpt{37x|3x2n}: fix timing register masks (take 2)
These drivers inherited from the older 'hpt366' IDE driver the buggy timing
register masks in their set_piomode() metods. As a result, too low command
cycle active time is programmed for slow PIO modes.  Quite fortunately, it's
later "fixed up" by the set_dmamode() methods which also "helpfully" reprogram
the command timings, usually to PIO mode 4; unfortunately, setting an UltraDMA
mode #N also reprograms already set PIO data timings, usually to MWDMA mode #
max(N, 2) timings...

However, the drivers added some breakage of their own too:  the bit that they
set/clear to control the FIFO is sometimes wrong -- it's actually the MSB of
the command cycle setup time; also, setting it in DMA mode is wrong as this
bit is only for PIO actually and clearing it for PIO modes is not needed as
no mode in any timing table has it set...

Fix all this, inverting the masks while at it, like in the 'hpt366' and
'pata_hpt366' drivers; bump the drivers' versions, accounting for recent
patches that forgot to do it...

Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Cc: stable@kernel.org
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2009-12-03 14:36:16 -05:00