In this case I simply wrapped it as code review suggests the locking
already terminally broken and I didn't want to make it first. See added
comment
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Push down the BKL. In some cases compat_ioctl already doesn't take the
BKL so we don't either. Some of the locking here seems already dubious
and object lifetimes want documenting
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
This is alternative implementation of sg content iterator introduced
by commit 83e7d317... from Pierre Ossman in next-20080716. As there's
already an sg iterator which iterates over sg entries themselves, name
this sg_mapping_iterator.
Slightly edited description from the original implementation follows.
Iteration over a sg list is not that trivial when you take into
account that memory pages might have to be mapped before being used.
Unfortunately, that means that some parts of the kernel restrict
themselves to directly accesible memory just to not have to deal with
the mess.
This patch adds a simple iterator system that allows any code to
easily traverse an sg list and not have to deal with all the details.
The user can decide to consume part of the iteration. Also, iteration
can be stopped and resumed later if releasing the kmap between
iteration steps is necessary. These features are useful to implement
piecemeal sg copying for interrupt drive PIO for example.
Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
Make it a bit more obvious that the card has been claimed by the
mmc_test driver so that people don't have to wonder why their block
device never shows up.
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
Russell no longer has the resources to fully test the controller, so
he is stepping down as maintainer.
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
Commit c8b3e02 renamed a variable, but missed one reference to it
inside a WARN_ON, causing it to incorrectly trigger.
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
The ADMA code path assumes that the 3 byte alignment fix doesn't cross
a page boundary. I'm not convinced this is worth supporting, but at
least print a warning in the off chance we'll actually see such a request.
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
Add tests that make sure the driver properly checks the blocks and
blksz fields and doesn't assume the sg list has a size that perfectly
matches the current request.
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
Add a couple of tests to make sure the host driver handles highmem
memory pages properly. Unfortunately there is no way to guarantee an
allocation below 4 GB in i386, so it might give you addresses that
are out of reach for the hardware (OTOH, so will any other highmem
allocation in the kernel).
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
Ensure that the s3cmci host controller is turned off
when the machine is shutdown, otherwise we end up
leaving the card powered and processing insertion and
removal events after the system prints "System halted."
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
Basic suspend/resume support: disable peripheral on suspend and
reinit on resume.
Tested on Au1200.
Signed-off-by: Manuel Lauss <mano@roarinelk.homelinux.net>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
Fix the naming of various functions in the s3cmc
driver to stop triggering section mismatch warnings.
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (82 commits)
ipw2200: Call netif_*_queue() interfaces properly.
netxen: Needs to include linux/vmalloc.h
[netdrvr] atl1d: fix !CONFIG_PM build
r6040: rework init_one error handling
r6040: bump release number to 0.18
r6040: handle RX fifo full and no descriptor interrupts
r6040: change the default waiting time
r6040: use definitions for magic values in descriptor status
r6040: completely rework the RX path
r6040: call napi_disable when puting down the interface and set lp->dev accordingly.
mv643xx_eth: fix NETPOLL build
r6040: rework the RX buffers allocation routine
r6040: fix scheduling while atomic in r6040_tx_timeout
r6040: fix null pointer access and tx timeouts
r6040: prefix all functions with r6040
rndis_host: support WM6 devices as modems
at91_ether: use netstats in net_device structure
sfc: Create one RX queue and interrupt per CPU package by default
sfc: Use a separate workqueue for resets
sfc: I2C adapter initialisation fixes
...
Stephen Rothwell points out that this file got deleted (on purpose) by
commit 640c1bce86 ("USB: delete airprime
driver"), but then almost immediately incorrectly resurrected by commit
95da310e66 ("usb_serial: API all change").
Delete it again. If it comes back, we'll need to drive a stake through
its heart.
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Acked-by: Greg KH <greg@kroah.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6:
sparc32: pass -m32 when building vmlinux.lds
sparc: Fixes the DRM layer build on sparc.
ide: merge <asm-sparc/ide_64.h> with <asm-sparc/ide_32.h>
ide: <asm-sparc/ide_64.h>: use __raw_{read,write}w()
ide: <asm-sparc/ide_32.h>: use __raw_{read,write}w()
ide: <asm-sparc/ide_64.h>: use %r0 for outw_be()
sparc64: Do not define BIO_VMERGE_BOUNDARY.
netif_carrier_{on,off}() handles starting and stopping packet
flow into the driver. So there is no reason to invoke netif_stop_queue()
and netif_wake_queue() in response to link status events.
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch adds to ioatdma and dca modules
support for Intel I/OAT DMA engine ver.3 (aka CB3 device).
The main features of I/OAT ver.3 are:
* 8 single channel DMA devices (8 channels total)
* 8 DCA providers, each can accept 2 requesters
* 8-bit TAG values and 32-bit extended APIC IDs
Signed-off-by: Maciej Sosnowski <maciej.sosnowski@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
I/OAT DMA performance tuning showed different optimal values of
tcp_dma_copybreak for different I/OAT versions (4096 for 1.2 and 2048
for 2.0). This patch lets ioatdma driver set tcp_dma_copybreak value
according to these results.
[dan.j.williams@intel.com: remove some ifdefs]
Signed-off-by: Maciej Sosnowski <maciej.sosnowski@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
This patch reworks the error handling in r6040_init_one
in order not to leak resources and correcly unmap and release
PCI regions of the MAC. Also prefix printk's with the driver name
for clarity.
Signed-off-by: Florian Fainelli <florian.fainelli@telecomint.eu>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
This patch bumps the release of the r6040 driver. There has been
quite some versions of it out there, but this one is the one
people should report bugs against.
Signed-off-by: Florian Fainelli <florian.fainelli@telecomint.eu>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
This patch allows the MAC to handle the RX FIFO full
and no descriptor available interrupts. While we are at it
replace the TX interrupt with its corresponding definition.
Signed-off-by: Florian Fainelli <florian.fainelli@telecomint.eu>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
This patch changes the default waiting time of a packet, which
along with our previous r6040_rx path, was causing huge delays
with another host (160 to 230 ms).
Signed-off-by: Florian Fainelli <florian.fainelli@telecomint.eu>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Define all the descriptor status the MAC can set.
Signed-off-by: Florian Fainelli <florian.fainelli@telecomint.eu>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
This patch completely reworks the RX path in order to be
more accurate about what is going on with the MAC.
We no longer read the error from the MLSR register instead read
the descriptor status register which reflects, the error per descriptor.
We now allocate skbs on the fly in r6040_rx, and we handle allocation
failure instead of simply dropping the packet. Remove the
rx_free_desc counter of r6040_private structure since we
allocate skbs in the RX path.
r6040_rx_buf_alloc is now removed and becomes unuseless.
Signed-Off-By: Joerg Albert <jal2@gmx.de>
Signed-off-by: Florian Fainelli <florian.fainelli@telecomint.eu>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
We did not call napi_disabled when putting down the interface
which should be done. Finally initialize lp->dev when everything
is set.
Signed-off-by: Florian Fainelli <florian.fainelli@telecomint.eu>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Joseph Fannin <jfannin@gmail.com> and Takashi Iwai <tiwai@suse.de>
noticed that commit 073a345c04
("mv643xx_eth: clarify irq masking and unmasking") broke the
mv643xx_eth build when NETPOLL is enabled, due to it not renaming
one instance of INT_CAUSE_EXT in mv643xx_eth_netpoll(). This patch
takes care of that instance as well.
Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
Cc: Dale Farnsworth <dale@farnsworth.org>
Cc: Joseph Fannin <jfannin@gmail.com>
Cc: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Rework the RX buffers allocation function so that we do not
leak memory in the case we could not allocate skbs for the
RX path. Propagate the errors to the r6040_up function
where we call the RX buffers allocation function.
Also rename the r6040_alloc_txbufs function to
r6040_init_txbufs, to reflect what it really does.
Signed-Off-By: Joerg Albert <jal2@gmx.de>
Signed-off-by: Florian Fainelli <florian.fainelli@telecomint.eu>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Add a helper function which only modifies R6040 MAC registers
use it when we timeout, and on adapter initialization. Fix
the scheduling while atomic but in the timeout routine due
to the reallocation of rx/tx buffers.
Signed-Off-By: Joerg Albert <jal2@gmx.de>
Signed-off-by: Florian Fainelli <florian.fainelli@telecomint.eu>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
This patch fixes a null pointer access in r6040_rx due
to lp->dev not being initialized.
Fix the TX timeouts, TX irq was not re-enabled on RX irq
Signed-Off-By: Joerg Albert <jal2@gmx.de>
Signed-off-by: Florian Fainelli <florian.fainelli@telecomint.eu>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Prefix all functions inside the r6040 driver with r6040 to
avoid namespace clashing.
Signed-off-by: Florian Fainelli <florian.fainelli@telecomint.eu>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
This patch allows Windows Mobile 6 devices to be used for
tethering -- that is, used as modems. It was requested by
AdamW in kernel bugzilla:
http://bugzilla.kernel.org/show_bug.cgi?id=11119
and Mandriva kernel-discuss list. It is tested and confirmed
to work by Peterl:
http://forum.eeeuser.com/viewtopic.php?pid=323543#p323543
This patch is based on the patch in the above kernel bugzilla,
which is from the usb-rndis-lite tree.
[ dbrownell@users.sourceforge.net: misc fixes ]
Signed-off-by: Thomas Backlund <tmb@mandriva.org>
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Use net_device_stats from net_device structure instead of local.
Signed-off-by: Paulius Zaleckas <paulius.zaleckas@teltonika.lt>
Tested-by: Marc Pignat <marc.pignat@hevs.ch>
Acked-by: Andrew Victor <linux@maxim.org.za>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Using multiple cores in the same package to handle received traffic
does not appear to provide a performance benefit. Therefore use CPU
topology information to count CPU packages and use that as the default
number of RX queues and interrupts. We rely on interrupt balancing to
spread the interrupts across packages.
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
This avoids deadlock in case a reset is triggered during self-test.
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
As recommended by Jean Delvare:
- Increase timeout to 50 ms
- Leave adapter class clear so that unwanted drivers do not probe our bus
- Use strlcpy() for name initialisation
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
This patch makes e1000 driver ioport-free.
This corrects behavior in probe function so as not to request ioport
resources as long as they are not really needed. This is based on the
ioport-free patch of e1000 driver from Auke Kok and Tomohiro Kusumi.
Signed-off-by: Tomohiro Kusumi <kusumi.tomohiro@jp.fujitsu.com>
Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
Signed-off-by: Taku Izumi <izumi.taku@jp.fujitsu.com>
Signed-off-by: Jeff Kirsher<jeffrey.t.kirsher@intel.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
The email linux-nics@intel.com is no longer available, remove all
references.
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Redefine DPRINTK macro using do while(0)
__FUNCTION__ to __func__
structs {} on separate lines
Surround negative constants with ()
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Alan Cox