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134,929 commits

Author SHA1 Message Date
K. Y. Srinivasan
929ad795f0 Staging: hv: mousevsc: Cleanup mousevsc_on_device_add()
Cleanup  mousevsc_on_device_add().

Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-10-04 10:39:38 -07:00
K. Y. Srinivasan
6e56f27c09 Staging: hv: mousevsc: Get rid of mousevsc_on_receive_input_report() by inlining
Get rid of mousevsc_on_receive_input_report() by inlining the code.

Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-10-04 10:39:38 -07:00
K. Y. Srinivasan
517812b448 Staging: hv: mousevsc: Cleanup camel cased enums
Cleanup all camel cased names.

Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-10-04 10:39:38 -07:00
K. Y. Srinivasan
ee2baa299a Staging: hv: mousevsc: Get rid of ref_count state in struct mousevsc_dev
Now get rid of the machinery for managing the life-cycle of the mousevsc_dev
as this is not needed.

Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-10-04 10:39:37 -07:00
K. Y. Srinivasan
c411f17daf Staging: hv: mousevsc: Now cleanup mousevsc_remove()
Now, cleanup mousevsc_remove(). The mouse driver once initialized only
receives data from the host. So, by closing the channel first in the
unload path, we can properly deal with inflight packets. So, we don't need
the machinery for managing the life-cycle of the mousevsc_dev object.
Get rid of the unnecessary code.

Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-10-04 10:39:37 -07:00
K. Y. Srinivasan
8ec31f9385 Staging: hv: mousevsc: Get rid of mousevsc_on_device_remove() by inlining code
Get rid of mousevsc_on_device_remove() by inlining code.

Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-10-04 10:39:36 -07:00
K. Y. Srinivasan
8660e38fab Staging: hv: mousevsc: Cleanup mousevsc_connect_to_vsp()
Cleanup mousevsc_connect_to_vsp(). There is no need to take reference on the
mousevsc device object when we are setting up the device. As part of this
cleanup get rid of get_input_device() as this function is only used here.

Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-10-04 10:39:36 -07:00
K. Y. Srinivasan
1486dd0d0a Staging: hv: mousevsc: Get rid of mousevsc_on_send_completion()
We don't need to handle the "send complete" callback - nothing needs to be done
here; get rid of the code.

Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-10-04 10:39:35 -07:00
K. Y. Srinivasan
bdbbdb2d63 Staging: hv: mousevsc: Cleanup alloc_input_device()
Cleanup alloc_input_device(); you can directly set the reference count.

Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-10-04 10:39:34 -07:00
K. Y. Srinivasan
c5b71fc71f Staging: hv: mousevsc: Get rid of the unused state: num_outstanding_req
Get rid of the unused state: num_outstanding_req in struct mousevsc_dev.

Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-10-04 10:39:34 -07:00
K. Y. Srinivasan
ea8646b92f Staging: hv: mousevsc: Free allocated memory in free_input_device()
Free all allocated memory in free_input_device().

Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-10-04 10:39:34 -07:00
K. Y. Srinivasan
61c4fb47cf Staging: hv: mousevsc: Get rid of unnecessary pr_* calls
Get rid of unnecessary pr_* calls.

Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-10-04 10:39:34 -07:00
K. Y. Srinivasan
5cd4d0302c Staging: hv: mousevsc: Cleanup error handling
Cleanup error handling in this driver; use standard Linux error codes.

Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-10-04 10:39:33 -07:00
K. Y. Srinivasan
0b1f0da005 Staging: hv: mousevsc: Get rid of unnecessary DPRINT calls
Get rid of unnecessary DPRINT calls.

Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-10-04 10:39:33 -07:00
K. Y. Srinivasan
da5969e4cc Staging: hv: mousevsc: Cleanup and properly implement reportdesc_callback()
Cleanup and properly implement reportdesc_callback(); properly allocate the
hid_device and properly initialize the hid device structure.

Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-10-04 10:39:33 -07:00
K. Y. Srinivasan
622a50dce0 Staging: hv: mousevsc: Use completion primitive to synchronize
Use completion primitive to synchronize.

Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-10-04 10:39:32 -07:00
K. Y. Srinivasan
1738067e5d Staging: hv: mousevsc: Correctly initialize the header size
Correctly initialize the header size.

Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-10-04 10:39:32 -07:00
K. Y. Srinivasan
60e8615ad6 Staging: hv: mousevsc: Handle the case where we may get bogus report desc size
Handle the case where we may get bogus report desc size from the host.

Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-10-04 10:39:32 -07:00
K. Y. Srinivasan
01584892db Staging: hv: mousevsc: Change the allocation flags to reflect interrupt context
Change the allocation flags to reflect interrupt context.

Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-10-04 10:39:32 -07:00
K. Y. Srinivasan
7f2bad4bd0 Staging: hv: mousevsc: Fixup some bogus WARN_ON() calls
Fix the bogus WARN_ON() calls.

Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-10-04 10:39:31 -07:00
K. Y. Srinivasan
28e0d06655 Staging: hv: mousevsc: Get rid of the struct input_device_context
The state maintained in struct input_device_context can easily be included
in the struct mousevsc_dev structure. Simplify the code by consolidating
the state.

Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-10-04 10:39:31 -07:00
K. Y. Srinivasan
870e53adbd Staging: hv: mousevsc: Fixup struct hv_input_dev_info
This structure is protocol defined structure and must match the definition
on the host side. Make appropriate adjustments.

Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-10-04 10:39:30 -07:00
Linus Torvalds
8a04b45367 Merge git://github.com/davem330/net
* git://github.com/davem330/net:
  pch_gbe: Fixed the issue on which a network freezes
  pch_gbe: Fixed the issue on which PC was frozen when link was downed.
  make PACKET_STATISTICS getsockopt report consistently between ring and non-ring
  net: xen-netback: correctly restart Tx after a VM restore/migrate
  bonding: properly stop queuing work when requested
  can bcm: fix incomplete tx_setup fix
  RDSRDMA: Fix cleanup of rds_iw_mr_pool
  net: Documentation: Fix type of variables
  ibmveth: Fix oops on request_irq failure
  ipv6: nullify ipv6_ac_list and ipv6_fl_list when creating new socket
  cxgb4: Fix EEH on IBM P7IOC
  can bcm: fix tx_setup off-by-one errors
  MAINTAINERS: tehuti: Alexander Indenbaum's address bounces
  dp83640: reduce driver noise
  ptp: fix L2 event message recognition
2011-10-04 10:37:06 -07:00
Jonathan Cameron
9d5d11539a staging: iio: if(__LITTLE_ENDIAN) -> #ifdef __LITTLE_ENDIAN
Unsuprisingly this symbol isn't defined on big endian systems.

Signed-off-by: Jonathan Cameron <jic23@cam.ac.uk>
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-10-04 10:37:06 -07:00
Stephen Rothwell
81e07c06e6 staging: r8712u: include module.h where needed
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Acked-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-10-04 10:37:06 -07:00
Stephen Rothwell
6a37b041d2 staging: iio: adc: add includes of module.h and stat.h
fixes these build problems:

drivers/staging/iio/adc/ad7746.c:345:8: error: 'S_IWUSR' undeclared here (not in a function)
drivers/staging/iio/adc/ad7746.c:436:8: error: 'S_IRUGO' undeclared here (not in a function)
drivers/staging/iio/adc/ad7746.c:681:19: error: 'THIS_MODULE' undeclared here (not in a function)
drivers/staging/iio/adc/ad7746.c:778:1: warning: data definition has no type or storage class [enabled by default]
drivers/staging/iio/adc/ad7746.c:778:1: warning: type defaults to 'int' in declaration of 'MODULE_DEVICE_TABLE' [-Wimplicit-int]
drivers/staging/iio/adc/ad7746.c:778:1: warning: parameter names (without types) in function declaration [enabled by default]
drivers/staging/iio/adc/ad7746.c:799:15: error: expected declaration specifiers or '...' before string constant
drivers/staging/iio/adc/ad7746.c:800:20: error: expected declaration specifiers or '...' before string constant
drivers/staging/iio/adc/ad7746.c:801:16: error: expected declaration specifiers or '...' before string constant

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Acked-by: Jonathan Cameron <jic23@cam.ac.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-10-04 10:37:05 -07:00
Hakan Kvist
74bdf22b5c USB: ftdi_sio: add PID for Sony Ericsson Urban
Add PID 0xfc8a, 0xfc8b for device Sony Ericsson Urban

Signed-off-by: Hakan Kvist <hakan.kvist@sonyericsson.com>
Signed-off-by: Oskar Andero <oskar.andero@sonyericsson.com>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-10-04 10:27:31 -07:00
Paul Gortmaker
2204fdee84 usb: Add module.h to various dwc3 drivers
These files uses the full set of MODULE_ macros and so need to
include module.h directly.

Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-10-04 10:27:28 -07:00
Felipe Balbi
dc1c70a774 usb: dwc3: convert structures into bitshifts
our parameter structures need to be written to
HW, so instead of assuming little endian, we
convert those into bit shifts.

Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-10-04 10:25:56 -07:00
Felipe Balbi
aabb707523 usb: dwc3: gadget: allow clock gating to work
The dwc3 core has internal clock gating support.

Let's allow that to happen by clearing the disable
bit in GCTL register.

Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-10-04 10:25:56 -07:00
Felipe Balbi
26ceca9750 usb: dwc3: core: cache GHWPARAMS* registers
cache the contents of GHWPARAMS* registers in
our device structure for easy access.

Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-10-04 10:25:55 -07:00
Felipe Balbi
a32994998c usb: dwc3: add struct dwc3_hwparams
That structure will hold a copy of readonly
GHWPARAMS* registers for ease accessing by
the driver.

Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-10-04 10:25:55 -07:00
Felipe Balbi
879631aa65 usb: dwc3: gadget: implement streams support
The following patch adds support for streams
to dwc3 driver.

While at that, also fix one small issue on
endpoint disable where we should clear all
flags not only ENABLED.

Reviewied-by: Paul Zimmerman <paulz@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-10-04 10:25:54 -07:00
Felipe Balbi
a4af9008bb usb: dwc3: gadget: add support for Bursts
We already have the value from gadget drivers,
just need to pass it to our controller.

Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-10-04 10:25:54 -07:00
Paul Zimmerman
c439ef87c3 usb: dwc3: gadget: fix DMA offset calculation
Fix offset calculation in dwc3_trb_dma_offset()

Signed-off-by: Paul Zimmerman <paulz@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-10-04 10:25:53 -07:00
Paul Zimmerman
5275455a6e usb: dwc3: gadget: make DWC3_EP_WEDGE do the right thing
This makes DWC3_EP_WEDGE do the right thing, which is
prevent DWC3_EP_WEDGE from ever being cleared by a
ClearFeature(HALT) command.

[ balbi@ti.com : allowed set_wedge to send SetHalt command
	to controller ]

Signed-off-by: Paul Zimmerman <paulz@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-10-04 10:25:53 -07:00
Paul Zimmerman
82828ca77b usb: dwc3: gadget: driver should not wait for RxFIFO to drain
An older version of the databook said to wait for the FIFO to
drain, but that has been removed from the newer databooks.

Waiting for RxFIFO to drain caused problems when testing against
one of the host controllers available in the market.

After talking to one of the RTL engineers, he stated that we
should _not_ wait for RxFIFO to drain.

Signed-off-by: Paul Zimmerman <paulz@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-10-04 10:25:53 -07:00
Paul Zimmerman
b23c843992 usb: dwc3: gadget: fix DEPSTARTCFG for non-EP0 EPs
DEPSTARTCFG for non-EP0 EPs must only be sent once per config

[ balbi@ti.com : changed config_start to start_config_issued ]

Signed-off-by: Paul Zimmerman <paulz@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-10-04 10:25:52 -07:00
Sebastian Andrzej Siewior
49a25cc9a7 usb: dwc: remove "All rights reserved" statement.
Some people think that this line is not compatible with the GPL. The
statement was required due to the Buenos Aires Convention and is now
deprecated. I remove it because it is said that it is pointless nowdays.

Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-10-04 10:25:52 -07:00
Sebastian Andrzej Siewior
b147f3572d usb: dwc3: ep0: fix debug output
Use "ep0in" and "ep0out" instead "ep1in" and "ep0out" which is confusing
and not consistent with the remaining output.

Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-10-04 10:25:51 -07:00
Sebastian Andrzej Siewior
9876cbe2e2 usb: dwc3: ep0: remove second giveback in error case
We already give requests back in dwc3_ep0_stall_and_restart() so
doing it again here will most likely corrupt the list.

Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-10-04 10:25:51 -07:00
Felipe Balbi
25355be64e usb: dwc3: ep0: fix debug message
The way it was before was really meaningless.
Now it looks saner.

Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-10-04 10:25:51 -07:00
Felipe Balbi
d95b09b901 usb: dwc3: ep0: ignore direction on 2-stage transfer
We don't need to care about direction on a two stage
transfer.

Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-10-04 10:25:50 -07:00
Felipe Balbi
2646021e1d usb: dwc3: ep0: Make USB30CV happy with SetAddress
According to USB 3.0 Specification, a SetAddress()
while device is in Configured State has an unspecified
behavior (see Section 9.4.6). Still USB30CV wasn't
happy with my Stall reply.

To make that thing happy, just accept the SetAddress()
always. No problems have been observed thus far.

Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-10-04 10:25:50 -07:00
Linus Torvalds
1fd2a850ec Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux
* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux:
  drm/radeon/kms: fix channel_remap setup (v2)
  drm/radeon: Set cursor x/y to 0 when x/yorigin > 0.
  drm/radeon: Update AVIVO cursor coordinate origin before x/yorigin calculation.
  drm/radeon: Simplify cursor x/yorigin calculation.
  drm/radeon/kms: fix cursor image off-by-one error
  drm/radeon/kms: Fix logic error in DP HPD handler
  drm/radeon/kms: add retry limits for native DP aux defer
  drm/radeon/kms: fix regression in DP aux defer handling
2011-10-04 09:54:18 -07:00
Linus Torvalds
f8451c3f15 Merge branch 'spi/merge' of git://git.secretlab.ca/git/linux-2.6
* 'spi/merge' of git://git.secretlab.ca/git/linux-2.6:
  spi-topcliff-pch: Fix overrun issue
  spi-topcliff-pch: Add recovery processing in case FIFO overrun error occurs
  spi-topcliff-pch: Fix CPU read complete condition issue
  spi-topcliff-pch: Fix SSN Control issue
  spi-topcliff-pch: add tx-memory clear after complete transmitting
2011-10-04 09:52:56 -07:00
Jon Mason
5f39e6705f PCI: Disable MPS configuration by default
Add the ability to disable PCI-E MPS turning and using the BIOS
configured MPS defaults.  Due to the number of issues recently
discovered on some x86 chipsets, make this the default behavior.

Also, add the option for peer to peer DMA MPS configuration.  Peer to
peer DMA is outside the scope of this patch, but MPS configuration could
prevent it from working by having the MPS on one root port different
than the MPS on another.  To work around this, simply make the system
wide MPS the smallest possible value (128B).

Signed-off-by: Jon Mason <mason@myri.com>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-10-04 09:52:28 -07:00
Benoit Cousson
4fcd15a032 of: Add helpers to get one string in multiple strings property
Add of_property_read_string_index and of_property_count_strings
to retrieve one string inside a property that will contains
severals strings.

Signed-off-by: Benoit Cousson <b-cousson@ti.com>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Kevin Hilman <khilman@ti.com>
2011-10-04 09:52:23 -07:00
Alex Deucher
12d5180bd7 drm/radeon/kms: fix channel_remap setup (v2)
Most asics just use the hw default value which requires
no explicit programming.  For those that need a different
value, the vbios will program it properly.  As such,
there's no need to program these registers explicitly
in the driver.  Changing MC_SHARED_CHREMAP requires a reload
of all data in vram otherwise its contents will be scambled.

Fixes:
https://bugs.freedesktop.org/show_bug.cgi?id=40103

v2: drop now unused channel_remap functions.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
Cc: stable@kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>
2011-10-04 17:24:14 +01:00
Tomoya MORINAGA
f3e03e2eb0 spi-topcliff-pch: Fix overrun issue
We found that adding load, Rx data sometimes drops.(with DMA transfer mode)
The cause is that before starting Rx-DMA processing, Tx-DMA processing starts.
This causes FIFO overrun occurs.

This patch fixes the issue by modifying FIFO tx-threshold and DMA descriptor
size like below.

                      Current                   this patch
Rx-descriptor   4Byte+12Byte*341    -->    12Byte*340-4Byte-12Byte
Rx-threshold                   (Not modified)
Tx-descriptor   4Byte+12Byte*341    -->    16Byte-12Byte*340
Rx-threshold    12Byte              -->    2Byte

Signed-off-by: Tomoya MORINAGA <tomoya-linux@dsn.okisemi.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-10-04 10:10:50 -06:00