Commands sent to ATAPI tape drives via the SCSI generic (sg) driver are
limited in the amount of data that they can transfer by the max_sectors
value.  The max_sectors value is currently calculated according to the
command set for disk drives, which doesn't apply to tape drives.  The
default max_sectors value of 256 limits ATAPI tape drive commands to
128 KB.  This patch against 2.6.24-rc1 increases the max_sectors value
for tape drives to 65535, which permits tape drive commands to transfer
just under 32 MB.

Tested with a SuperMicro PDSME motherboard, AHCI, and a Sony SDX-570V
SATA tape drive.

Note that some of the chipset drivers also set their own max_sectors
value, which may override the value set in libata-core.  I don't have
any of these chipsets to test, so I didn't go messing with them.  Also,
ATAPI devices other than tape drives may benefit from similar changes,
but I have only tape drives and disk drives to test.
Signed-off-by: NTony Battersby <tonyb@cybernetics.com>
Signed-off-by: NJeff Garzik <jeff@garzik.org>

The Jazz machines have to use the PIT timer for dyntick and highresolution
kernels.  This may break because currently just like i386 used to do MIPS
uses two separate spinlocks in the actual PIT code and the PC speaker
code.  So switch to do it the same that x86 currently does PIT locking.
Signed-off-by: NRalf Baechle <ralf@linux-mips.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

This is the clock rate of the i8253 PIT.  A MIPS system may not have
a PIT by the symbol is used all over the kernel including some APIs.
So keeping it defined to the number for the PIT is the only sane thing
for now.
Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

Signed-off-by: NYoichi Yuasa <yoichi_yuasa@tripeaks.co.jp>
Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

* Do not include unnecessary headers.
* Do not mention time.README.
* Do not mention mips_timer_ack.
* Make clocksource_mips static.  It is now dedicated to c0_timer.
* Initialize clocksource_mips.read statically.
* Remove null_hpt_read.
* Remove an argument of plat_timer_setup.  It is just a placeholder.
Signed-off-by: NAtsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

Device mapper uses its own bounce_pfn that may differ from one on underlying
device. In that way dm can build incorrect requests that contain sg elements
greater than underlying device is able to handle.

This is the cause of slab corruption in i2o layer, occurred on i386 arch when
very long direct IO requests are addressed to dm-over-i2o device.
Signed-off-by: NVasily Averin <vvs@sw.ru>
Cc: <stable@kernel.org>
Cc: Alasdair G Kergon <agk@redhat.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NJens Axboe <jens.axboe@oracle.com>

sg_mark_end() overwrites the page_link information, but all users want
__sg_mark_end() behaviour where we just set the end bit. That is the most
natural way to use the sg list, since you'll fill it in and then mark the
end point.

So change sg_mark_end() to only set the termination bit. Add a sg_magic
debug check as well, and clear a chain pointer if it is set.
Signed-off-by: NJens Axboe <jens.axboe@oracle.com>

Not architecture specific code should not #include <asm/scatterlist.h>.

This patch therefore either replaces them with
#include <linux/scatterlist.h> or simply removes them if they were
unused.
Signed-off-by: NAdrian Bunk <bunk@kernel.org>
Signed-off-by: NJens Axboe <jens.axboe@oracle.com>

Don't open code sg_init_one(), make it reuse sg_init_table().
Signed-off-by: NJens Axboe <jens.axboe@oracle.com>

While using separate IRQ stacks can cut down on stack consumption,
many users can also use 4k stacks directly without the additional
need of separate stacks for soft and hardirqs.

With this split, we support the same rationale for 4KSTACKS as
m68knommu, with the IRQSTACKS abstraction as per ppc64.
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

Documentation updates for network interfaces.

1. Add doc for netif_napi_add
2. Remove doc for unused returns from netif_rx
3. Add doc for netif_receive_skb

[ Incorporated minor mods from Randy Dunlap -DaveM ]
Signed-off-by: NStephen Hemminger <shemminger@linux-foundation.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

When the CONFIG_NET_NS is n there's no need in refcounting
the initial net namespace. So relax this code by making a
stupid stubs for the "n" case.
Signed-off-by: NPavel Emelyanov <xemul@openvz.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Finally, the zero_it argument can be completely removed from
the callers and from the function prototype.

Besides, fix the checkpatch.pl warnings about using the
assignments inside if-s.

This patch is rather big, and it is a part of the previous one.
I splitted it wishing to make the patches more readable. Hope 
this particular split helped.
Signed-off-by: NPavel Emelyanov <xemul@openvz.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

The sock_copy() call is not used outside the sock.c file,
so just move it into a sock.c
Signed-off-by: NPavel Emelyanov <xemul@openvz.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

This was found by make randconfig

If the kernel .text is very large, the .fixup section branches
are too far away to be relocated correctly.

Use "sethi %hi(label), reg; jmpl reg + %lo(label); %g0" sequence
instead of the branch to fix this.

There is another case in switch_to() involving a branch, which
is fixed similarly.
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

This reverts commit fcd239d3.

I messed up, ia64 still uses these files in the current tree, and now
can not build the pci code, which all ia64 boxes seem to require :)

This fixes that mistake.
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

This fixes a build problem with GPIOs on DaVinci.  Since it inlines
operations for on-chip GPIOs, it needs some headers to support those
direct register accesses.  Those headers won't be included on other
platforms, since they don't have that optimization.
Signed-off-by: NDavid Brownell <dbrownell@users.sourceforge.net>
Acked-by: NKevin Hilman <khilman@mvista.com>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

Signed-off-by: Neric miao <eric.miao@marvell.com>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

Someone forgot to use 'ls include/asm-*/flat.h' or
'grep -r flat_get_addr_from_rp .' to find all architectures which
may be affected by their change.  Fix the fall out.
Noticed-by: NRobert P. J. Day <rpjday@crashcourse.ca>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

Fix:

  CC      drivers/serial/atmel_serial.o
drivers/serial/atmel_serial.c: In function 'atmel_serial_suspend':
drivers/serial/atmel_serial.c:924: error: implicit declaration of function 'at91_suspend_entering_slow_clock'
Acked-by: NAndrew Victor <andrew@sanpeople.com>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

Fix a typo in include/asm-arm/plat-s3c/regs-nand.h.
Signed-off-by: NMatt Reimer <mreimer@vpop.net>
Acked-by: NBen Dooks <ben-linux@fluff.org>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

These functions are not used by anyone, so remove them from the tree.

The class_device code will be removed soon anyway, so no future users
will ever be possible.
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

It wants string functions like memcpy() for inline
routines, and these define userland interfaces.

The only clean way to deal with this is to simply
put linux/string.h into unifdef-y and have it
include <string.h> when not-__KERNEL__.
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

In the mv643xx_eth driver, we now use offsets from the ethernet
register block within the chip, but the pegasos 2 platform still
needs offsets from the full chip's register base address.
Signed-off-by: NDale Farnsworth <dale@farnsworth.org>
Signed-off-by: NJeff Garzik <jeff@garzik.org>

Coverity spotted some incorrect code in a recent change to the IPMI driver;
this patch make sure the data is really long enough to pull the
manufacturer id and product id out of a get device id message.
Signed-off-by: NCorey Minyard <cminyard@mvista.com>
Cc: Adrian Bunk <bunk@kernel.org>
Cc: Stian Jordet <liste@jordet.net>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Implement ATA_QCFLAG_QUIET which indicates that there's no need to
report if the command fails with AC_ERR_DEV and set it for passthrough
commands.

Combined with previous changes, this now makes device errors for all
direct commands reported directly to the issuer without going through
EH actions and reporting.

Note that EH is still invoked after non-IO device errors to determine
the nature of the error and resume command execution (some controller
requires special care after error to continue).  It just performs
default maintenance after error, examines what's going on, realizes
that it's none of its business and reports the command failure without
logging any error messages.
Signed-off-by: NTejun Heo <htejun@gmail.com>
Signed-off-by: NJeff Garzik <jeff@garzik.org>

Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

Follows s390 and others.
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

Needed, as reported in:

http://bugzilla.kernel.org/show_bug.cgi?id=9260Signed-off-by: NDavid S. Miller <davem@davemloft.net>

This patch fixes the following compile error caused by
commit 622a9edd:

<--  snip  -->

...
  CC      init/main.o
In file included from /home/bunk/linux/kernel-2.6/git/linux-2.6/include/linux/dma-mapping.h:52,
                 from /home/bunk/linux/kernel-2.6/git/linux-2.6/include/linux/dmaengine.h:29,
                 from /home/bunk/linux/kernel-2.6/git/linux-2.6/include/linux/skbuff.h:29,
                 from /home/bunk/linux/kernel-2.6/git/linux-2.6/include/linux/netlink.h:155,
                 from /home/bunk/linux/kernel-2.6/git/linux-2.6/include/linux/genetlink.h:4,
                 from /home/bunk/linux/kernel-2.6/git/linux-2.6/include/net/genetlink.h:4,
                 from /home/bunk/linux/kernel-2.6/git/linux-2.6/include/linux/taskstats_kern.h:12,
                 from /home/bunk/linux/kernel-2.6/git/linux-2.6/init/main.c:46:
include2/asm/dma-mapping.h: In function 'dma_cache_sync':
include2/asm/dma-mapping.h:46: error: invalid operands to binary & (have 'void *' and 'int')
make[2]: *** [init/main.o] Error 1

<--  snip  -->
Signed-off-by: NAdrian Bunk <bunk@kernel.org>
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

In order to be more consistent with other architectures, move two
DMA-related scatterlist macros from pci.h to scatterlist.h.
Signed-off-by: NRobert P. J. Day <rpjday@crashcourse.ca>
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

Signed-off-by: NMike Frysinger <michael.frysinger@analog.com>
Signed-off-by: NBryan Wu <bryan.wu@analog.com>

Signed-off-by: NMike Frysinger <michael.frysinger@analog.com>
Signed-off-by: NBryan Wu <bryan.wu@analog.com>

Signed-off-by: NMichael Hennerich <michael.hennerich@analog.com>
Signed-off-by: NBryan Wu <bryan.wu@analog.com>

As noted by David:

pte_page() is a macro defined as follows;

    include/asm-sh/pgtable.h
    #define pte_page(x)    phys_to_page(pte_val(x)&PTE_PHYS_MASK)

    include/asm-sh/page.h
    #define phys_to_page(phys)    (pfn_to_page(phys >> PAGE_SHIFT))

So as you can see the phys_to_page() macro doesn't wrap the 'phys'
parameter in parentheses so we end up with;

    pte_val(x)&PTE_PHYS_MASK >> PAGE_SHIFT

Which is not what we wanted as '>>' has a higher precedence than bitwise
AND. I dug into the git repository and I believe this bug was added with
this commit (104b8dea);

2006-03-27 KAMEZAWA Hiroyuki [PATCH] unify pfn_to_page: sh pfn_to_page

-#define phys_to_page(phys)     (mem_map + (((phys)-__MEMORY_START) >>
PAGE_SHIFT))
-#define page_to_phys(page)     (((page - mem_map) << PAGE_SHIFT) +
__MEMORY_START)
+#define phys_to_page(phys)     (pfn_to_page(phys >> PAGE_SHIFT))
+#define page_to_phys(page)     (page_to_pfn(page) << PAGE_SHIFT)
Reported-by: NDavid ADDISON <david.addison@st.com>
Reported-by: NKAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

Extend Peter's patch to fix accounting issues, by keeping stime
monotonic too.
Signed-off-by: NBalbir Singh <balbir@linux.vnet.ibm.com>
Signed-off-by: NIngo Molnar <mingo@elte.hu>
Tested-by: NFrans Pop <elendil@planet.nl>

This patch renames the 4 symbols iommu_hole_init(), iommu_aperture,
iommu_aperture_allowed, iommu_aperture_disabled. All these symbols are only
used for the GART implementation of IOMMUs.

It adds and additional gart_ prefix to them.
Signed-off-by: NJoerg Roedel <joerg.roedel@amd.com>
Signed-off-by: NIngo Molnar <mingo@elte.hu>
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>