The document says:
|2.1 Problem description
| When at least two USB devices are simultaneously running, it is observed that
| sometimes the INT corresponding to one of the USB devices stops occurring. This may
| be observed sometimes with USB-to-serial or USB-to-network devices.
| The problem is not noticed when only USB mass storage devices are running.
|2.2 Implication
| This issue is because of the clearing of the respective Done Map bit on reading the ATL
| PTD Done Map register when an INT is generated by another PTD completion, but is not
| found set on that read access. In this situation, the respective Done Map bit will remain
| reset and no further INT will be asserted so the data transfer corresponding to that USB
| device will stop.
|2.3 Workaround
| An SOF INT can be used instead of an ATL INT with polling on Done bits. A time-out can
| be implemented and if a certain Done bit is never set, verification of the PTD completion
| can be done by reading PTD contents (valid bit).
| This is a proven workaround implemented in software.
Russell King run into this with an USB-to-serial converter. This patch
implements his suggestion to enable the high frequent SOF interrupt only
at the time we have ATL packages queued. It goes even one step further
and enables the SOF interrupt only if we have more than one ATL packet
queued at the same time.
Cc: <stable@kernel.org> # [2.6.35.x, 2.6.36.x, 2.6.37.x]
Tested-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
ehci_lpm_set_da and ehci_lpm_check are EHCI 1.1 specific functions which
are not used on many platforms but do generate annoying gcc warnings
Signed-off-by: Maksim Rayskiy <mrayskiy@broadcom.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
We need FUSB300_MAX_NUM_EP (16) names otherwise the last 8 names get
initialized to garbage values in fusb300_probe().
Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This is a patch that seems to make the USB hangs on the S3C244X go away.
At least a good amount of ping torture didn't make them come back so far.
The issue is that, if there are several back-to-back packets, sometimes no
interrupt is generated for one of them. This seems to be caused by the
mysterious dual packet mode, which the USB hardware enters automatically
if the endpoint size is half that of the FIFO. (On the 244X, this is the
normal situation for bulk data endpoints.)
There is also a timing factor in this. It seems that what happens is that
the USB hardware automatically sends an acknowledgement if there is only one
packet in the FIFO (the FIFO has space for two). If another packet arrives
before the host has retrieved and acknowledged the previous one, no interrupt
is generated for that second one.
However, there may be an indication. There is one undocumented bit (none
of the 244x manuals document it), OUT_CRS1_REG[1], that seems to be set
suspiciously often when this condition occurs. There is also
CLR_DATA_TOGGLE, OUT_CRS1_REG[7], which may have a function related to
this. (The Samsung manual is rather terse on that, as usual.)
This needs to be examined further. For now, the patch seems to do the
trick.
Signed-off-by: Vasily Khoruzhick <anarsoul@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This PCH_UDC driver does not work normally when "Ethernet gadget" is used.
This patch fixed this issue.
The following was modified.
- The FIFO flush process.
- The descriptor creation process.
- The adjustment of DMA buffer align.
Currently the PCH_UDC driver can work normally with "Ethernet gadget",
"Serial gadget" or "File-backed Storage Gadget".
Signed-off-by: Toshiharu Okada <toshiharu-linux@dsn.okisemi.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Reorder the driver->name assignment so the 'iProduct' could be initialized
as well if both 'name' and 'iProduct' come as NULL by default.
Also, remove the misplaced 'extern' keyword.
Signed-off-by: Jassi Brar <jassi.brar@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
While checking valid interface number we should compare MAX_CONFIG_INTERFACES
with the variable 'intf' (which holds the lower 8bits of w_index) rather than
'w_index'
Signed-off-by: Jassi Brar <jassi.brar@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This is needed to resolve some merge conflicts that were found
in the USB host controller patches, and reported by Stephen Rothwell.
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This reverts commit b7d5b439b7.
It conflicts with commit baab93afc2 "USB:
EHCI: ASPM quirk of ISOC on AMD Hudson" and merging the two just doesn't
work properly.
Cc: Andiry Xu <andiry.xu@amd.com>
Cc: David Brownell <dbrownell@users.sourceforge.net>
Cc: Alex He <alex.he@amd.com>
Cc: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This adds the N8 to the list of devices in cdc-acm, in order to get the
secondary ACM device exposed.
In the spirit of:
http://kerneltrap.org/mailarchive/linux-usb/2010/9/4/6264554
Signed-off-by: Arvid Ephraim Picciani <arvid.picciani@nokia.com>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Trying to compile drivers/usb/gadget/f_mass_storage.o currently fails and
spews a ton of warnings :
CC drivers/usb/gadget/f_mass_storage.o
drivers/usb/gadget/f_mass_storage.c:436:22: error: field ‘function’ has incomplete type
drivers/usb/gadget/f_mass_storage.c: In function ‘fsg_from_func’:
drivers/usb/gadget/f_mass_storage.c:466:9: warning: type defaults to ‘int’ in declaration of ‘__mptr’
drivers/usb/gadget/f_mass_storage.c:466:9: warning: initialization from incompatible pointer type
drivers/usb/gadget/f_mass_storage.c: At top level:
drivers/usb/gadget/f_mass_storage.c:2743:15: warning: ‘struct usb_composite_dev’ declared inside parameter list
drivers/usb/gadget/f_mass_storage.c:2743:15: warning: its scope is only this definition or declaration, which is probably not what you want
drivers/usb/gadget/f_mass_storage.c: In function ‘fsg_common_init’:
drivers/usb/gadget/f_mass_storage.c:2745:34: error: dereferencing pointer to incomplete type
drivers/usb/gadget/f_mass_storage.c:2775:23: error: dereferencing pointer to incomplete type
drivers/usb/gadget/f_mass_storage.c:2779:3: error: implicit declaration of function ‘usb_string_id’
drivers/usb/gadget/f_mass_storage.c: At top level:
drivers/usb/gadget/f_mass_storage.c:2984:60: warning: ‘struct usb_configuration’ declared inside parameter list
drivers/usb/gadget/f_mass_storage.c:3003:57: warning: ‘struct usb_configuration’ declared inside parameter list
drivers/usb/gadget/f_mass_storage.c: In function ‘fsg_bind’:
drivers/usb/gadget/f_mass_storage.c:3006:31: error: dereferencing pointer to incomplete type
drivers/usb/gadget/f_mass_storage.c:3013:2: error: implicit declaration of function ‘usb_interface_id’
drivers/usb/gadget/f_mass_storage.c:3033:3: error: dereferencing pointer to incomplete type
drivers/usb/gadget/f_mass_storage.c:3034:6: error: dereferencing pointer to incomplete type
drivers/usb/gadget/f_mass_storage.c:3043:4: error: dereferencing pointer to incomplete type
drivers/usb/gadget/f_mass_storage.c:3044:7: error: dereferencing pointer to incomplete type
drivers/usb/gadget/f_mass_storage.c:3045:26: error: dereferencing pointer to incomplete type
drivers/usb/gadget/f_mass_storage.c: At top level:
drivers/usb/gadget/f_mass_storage.c:3067:14: warning: ‘struct usb_configuration’ declared inside parameter list
drivers/usb/gadget/f_mass_storage.c:3067:14: warning: ‘struct usb_composite_dev’ declared inside parameter list
drivers/usb/gadget/f_mass_storage.c: In function ‘fsg_bind_config’:
drivers/usb/gadget/f_mass_storage.c:3093:2: error: implicit declaration of function ‘usb_add_function’
drivers/usb/gadget/f_mass_storage.c: At top level:
drivers/usb/gadget/f_mass_storage.c:3103:9: warning: ‘struct usb_configuration’ declared inside parameter list
drivers/usb/gadget/f_mass_storage.c:3103:9: warning: ‘struct usb_composite_dev’ declared inside parameter list
drivers/usb/gadget/f_mass_storage.c: In function ‘fsg_add’:
drivers/usb/gadget/f_mass_storage.c:3105:2: warning: passing argument 1 of ‘fsg_bind_config’ from incompatible pointer type
drivers/usb/gadget/f_mass_storage.c:3065:12: note: expected ‘struct usb_composite_dev *’ but argument is of type ‘struct usb_composite_dev *’
drivers/usb/gadget/f_mass_storage.c:3105:2: warning: passing argument 2 of ‘fsg_bind_config’ from incompatible pointer type
drivers/usb/gadget/f_mass_storage.c:3065:12: note: expected ‘struct usb_configuration *’ but argument is of type ‘struct usb_configuration *’
drivers/usb/gadget/f_mass_storage.c: At top level:
drivers/usb/gadget/f_mass_storage.c:3190:23: warning: ‘struct usb_composite_dev’ declared inside parameter list
drivers/usb/gadget/f_mass_storage.c:3195:23: warning: ‘struct usb_composite_dev’ declared inside parameter list
drivers/usb/gadget/f_mass_storage.c:3193:1: error: conflicting types for ‘fsg_common_from_params’
drivers/usb/gadget/f_mass_storage.c:3188:1: note: previous declaration of ‘fsg_common_from_params’ was here
drivers/usb/gadget/f_mass_storage.c: In function ‘fsg_common_from_params’:
drivers/usb/gadget/f_mass_storage.c:3199:2: warning: passing argument 2 of ‘fsg_common_init’ from incompatible pointer type
drivers/usb/gadget/f_mass_storage.c:2741:27: note: expected ‘struct usb_composite_dev *’ but argument is of type ‘struct usb_composite_dev *’
make[1]: *** [drivers/usb/gadget/f_mass_storage.o] Error 1
make: *** [drivers/usb/gadget/f_mass_storage.o] Error 2
This is due to the missing include of linux/usb/composite.h - this patch
adds the missing include.
In addition there's also a problem in fsg_common_init() where we memset
'common', but we use the size of a pointer to 'struct fsg_common' as the
size argument to memset(), not the actual size of the struct. This patch
fixes the sizeof so we zero the entire struct as intended.
Signed-off-by: Jesper Juhl <jj@chaosbits.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This patch fixes the below compilation errors.
CC drivers/usb/gadget/ci13xxx_msm.o
CC net/mac80211/led.o
drivers/usb/gadget/ci13xxx_msm.c: In function 'ci13xxx_msm_notify_event':
drivers/usb/gadget/ci13xxx_msm.c:42: error: 'USB_AHBBURST' undeclared (first use in this function)
drivers/usb/gadget/ci13xxx_msm.c:42: error: (Each undeclared identifier is reported only once
drivers/usb/gadget/ci13xxx_msm.c:42: error: for each function it appears in.)
drivers/usb/gadget/ci13xxx_msm.c:43: error: 'USB_AHBMODE' undeclared (first use in this function)
make[4]: *** [drivers/usb/gadget/ci13xxx_msm.o] Error 1
make[3]: *** [drivers/usb/gadget] Error 2
MSM USB driver is not supported on boards like trout (MSM7201) which
has an external PHY.
Signed-off-by: Pavankumar Kondeti <pkondeti@codeaurora.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Some UDC drivers fails to queue a request if req->buf == NULL even for
ZLP requests. This patch adds a poisoned pointer instead of NULL to
make the code compliant with the gadget specification and catches
possible bug in the UDC driver if it tries to dereference buffer pointer
on ZLP request.
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Provide optional hooks for the host controller driver to override the
default DMA mapping and unmapping routines. In general, these shouldn't
be necessary unless the host controller has special DMA requirements,
such as alignment contraints. If these are not specified, the
general usb_hcd_(un)?map_urb_for_dma functions will be used instead.
Also, pass the status to unmap_urb_for_dma so it can know whether the
DMA buffer has been overwritten.
Finally, add a flag to be used by these implementations if they
allocated a temporary buffer so it can be freed properly when unmapping.
Signed-off-by: Robert Morell <rmorell@nvidia.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
The convention is to prefix symbols exported from the USB HCD core with
"usb_hcd". This change makes unmap_urb_setup_for_dma() and
unmap_urb_for_dma() consistent with that.
Signed-off-by: Robert Morell <rmorell@nvidia.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This is based on a patch that Alan Stern wrote. It did the same simple
thing in both text and binary cases. In the same time, Marton and I
fixed the binary side properly, but this leaves the text to be fixed.
It is not very important due to low maxium data size of text, but
let's add it just for extra correctness.
The pseudocode is too much to keep fixed up, and we have real code
to be used as examples now, so let's drop it too.
Signed-off-by: Pete Zaitcev <zaitcev@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
In create_companion_file() there is a bogus assignemt to i created for
the express purpose of avoiding an ignored return value warning.
With pre-release GCC-4.6, this causes a 'set but not used' warning.
Kick the problem further down the road by just returning i. All the
callers of create_companion_file() ignore its return value, so all is
good:
o No warnings are issued.
o We still subvert the desires of the authors of device_create_file()
by ignorning error conditions.
Signed-off-by: David Daney <ddaney@caviumnetworks.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
With pre-release GCC-4.6, we get a 'set but not used' warning when
EHCI_URB_TRACE is not set because we set the qtd variable without
using it.
Rearrange the statements so that we only set qtd if it will be used.
Signed-off-by: David Daney <ddaney@caviumnetworks.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
The vdbg macro is not used anywhere so it can be removed.
With pre-release GCC-4.6, there are several complaints of variables
that are 'set but not used' caused by the ehci_vdbg() macro expanding
to something that does not contain any of its arguments. We can quiet
this warning by rewriting ehci_vdbg() as a variadic static inline that
does nothing.
Signed-off-by: David Daney <ddaney@caviumnetworks.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
The pre-release GCC-4.6 now correctly flags this code as dead.
Signed-off-by: David Daney <ddaney@caviumnetworks.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This patch moves the AMD PLL quirk code in OHCI/EHCI driver to pci-quirks.c,
and exports the functions to be used by xHCI driver later.
AMD PLL quirk disable the optional PM feature inside specific
SB700/SB800/Hudson-2/3 platforms under the following conditions:
1. If an isochronous device is connected to OHCI/EHCI/xHCI port and is active;
2. Optional PM feature that powers down the internal Bus PLL when the link is
in low power state is enabled.
Without AMD PLL quirk, USB isochronous stream may stutter or have breaks
occasionally, which greatly impair the performance of audio/video streams.
Currently AMD PLL quirk is implemented in OHCI and EHCI driver, and will be
added to xHCI driver too. They are doing similar things actually, so move
the quirk code to pci-quirks.c, which has several advantages:
1. Remove duplicate defines and functions in OHCI/EHCI (and xHCI) driver and
make them cleaner;
2. AMD chipset information will be probed only once and then stored.
Currently they're probed during every OHCI/EHCI initialization, move
the detect code to pci-quirks.c saves the repeat detect cost;
3. Build up synchronization among OHCI/EHCI/xHCI driver. In current
code, every host controller enable/disable PLL only according to
its own status, and may enable PLL while there is still isoc transfer on
other HCs. Move the quirk to pci-quirks.c prevents this issue.
Signed-off-by: Andiry Xu <andiry.xu@amd.com>
Cc: David Brownell <dbrownell@users.sourceforge.net>
Cc: Alex He <alex.he@amd.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Make sure we are running on a MX35 processor.
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Currently, for ISO and INT, a protocol driver must chose the value for
wMaxPacketSize arbitrarily. The value may be too low, resulting in lesser
than efficient operation or high enough to not work with all UDC drivers.
Take un-initialized wMaxPacketSize as a hint to provide maximum
possible packetsize for the selected endpoint. The protocol may
then choose a value not bigger than that.
Signed-off-by: Jassi Brar <jassi.brar@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Added mct_u232_ioctl (implements TIOCMIWAIT command),
mct_u232_get_icount (implements TIOCGICOUNT command) and
mct_u232_msr_to_icount functions. MCT U232 P9 is one of a few usb to
serail adapters which converts USB +/-5v voltage levels to COM +/-15
voltages. So it can also power COM interfaced devices. This makes it
very usable for legacy COM interfaced data-acquisition hardware. I
tested new implementation with AWARE Electronics RM-60 radiation meter,
which sends pulse via RNG COM line whenever new particle is registered.
Signed-off-by: Vadim Tsozik <tsozik@yahoo.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* 'for-greg' of git://gitorious.org/usb/usb:
usb: ehci-omap: Show fatal probing time errors to end user
usb: musb: introduce api for dma code to check compatibility with usb request
usb: musb: maintain three states for buffer mappings instead of two
usb: musb: disable double buffering when it's broken
usb: musb: hsdma: change back to use musb_read/writew
usb: musb: core: fix IRQ check
usb: musb: fix kernel panic during s2ram(v2)
This patch (as1444) adds an unusual_devs entry for an MP3 player from
Coby electronics. The device has two nasty bugs.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Tested-by: Jasper Mackenzie <scarletpimpernal@hotmail.com>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Add the USB Vendor ID and Product ID for a Acton Research Corp.
spectrograph device with a FTDI chip for serial I/O.
Signed-off-by: Michael H Williamson <michael.h.williamson@gmail.com>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
The USB core keeps track of pending resume requests for root hubs, in
order to resolve races between wakeup requests and suspends. However
the code that does this is subject to another race (between wakeup
requests and resumes) because the WAKEUP_PENDING flag is cleared
before the resume occurs, leaving a window in which another wakeup
request might arrive.
This patch (as1447) fixes the problem by clearing the WAKEUP_PENDING
flag after the resume instead of before it.
This fixes Bugzilla #24952.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Tested-by: Paul Bender <pebender@san.rr.com>
Tested-by: warpme <warpme@o2.pl>
Cc: stable <stable@kernel.org> [.36+]
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
If anyone comes across a high-speed hub that (by mistake or by design)
claims to have no Transaction Translators, plugging a full- or
low-speed device into it will cause the USB stack to crash. This
patch (as1446) prevents the problem by ignoring such devices, since
the kernel has no way to communicate with them.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Tested-by: Perry Neben <neben@vmware.com>
CC: <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
on ST Micro Connect Lite we have 4 port
Part A and B for the JTAG
Port C Uart
Port D for PIO
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This device suffers from the off-by-one error when reporting the capacity,
so add entry with US_FL_FIX_CAPACITY.
Signed-off-by: Nick Holloway <Nick.Holloway@pyrites.org.uk>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
In drivers/usb/host/sl811-hcd.c::sl811h_urb_enqueue(), memory is allocated
with kzalloc() and assigned to 'ep'. If we leave via the 'fail' label due
to 'if (ep->maxpacket > H_MAXPACKET)', then 'ep' will go out of scope
without having been assigned to anything, so we'll leak the memory we
allocated.
This patch fixes the leak by simply calling kfree(ep); before jumping to
the 'fail' label.
Signed-off-by: Jesper Juhl <jj@chaosbits.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
The major and minor number saved in the product_info structure
were copied from the address instead of the data, causing an
inconsistency in the reported versions during firmware loading:
usb 4-1: firmware: requesting edgeport/down.fw
/usr/src/linux/drivers/usb/serial/io_edgeport.c: downloading firmware version (930) 1.16.4
[..]
/usr/src/linux/drivers/usb/serial/io_edgeport.c: edge_startup - time 3 4328191260
/usr/src/linux/drivers/usb/serial/io_edgeport.c: FirmwareMajorVersion 0.0.4
This can cause some confusion whether firmware loaded successfully
or not.
Cc: stable@kernel.org
Signed-off-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
There are a few error paths in ehci_hcd_omap_probe that can be triggered
because of memory allocation or hw failure. Change those dev_dbg error
prints to dev_err with an error code printed so that the end users are able
to notice the issue.
Signed-off-by: Jarkko Nikula <jhnikula@gmail.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Gadget MUSB driver handles dma mappings in musb_gadget_queue(). Where as it is
possible for dma code to reject the usb request later at ->channel_program()
called from txstate()/rxstate()
For example ->channel_program in tusb6010_omap.c:
static int tusb_omap_dma_program(struct dma_channel *channel, u16 packet_sz,
u8 rndis_mode, dma_addr_t dma_addr, u32 len)
{
...
if (unlikely(dma_addr & 0x1) || (len < 32) || (len > packet_sz))
return false;
...
if (dma_addr & 0x2)
return false;
...
}
In this case, usb request will be handled in PIO mode which renders dma mapping
operations unnecessary.
This patch adds an api to allow dma code to indicate incompatibility with usb
request. Gadget musb driver call this api, if available, before dma mappings to
avoid any unnecessary mapping operations.
Signed-off-by: Mian Yousaf Kaukab <mian.yousaf.kaukab@stericsson.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
If dma buffers are mapped by a higher layer, with a boolean musb_request.mapped
it is still possible to call dma_sync_single_for_device() from
musb_g_giveback(), even if txstate()/rxstate() has called unmap_dma_buffer()
before falling back to pio mode.
Moreover, check for musb_ep->dma is moved within map_dma_buffer() so where
applicable checks for it are removed. And where possible, checks for
is_dma_capable() are merged with buffer map state check.
Signed-off-by: Mian Yousaf Kaukab <mian.yousaf.kaukab@stericsson.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
We know that blackfin doesn't support double
buffering feature as of today. So we add a
flag set by musb_platform_init() to forcefully
disable that feature.
Such flag is created and marked as deprecated
to force us to find a solution for the missing
double buffering support on blackfin.
Signed-off-by: Felipe Balbi <balbi@ti.com>
Blackfin platform doesn't support 32bits musbdma registers, so change back to
use musb_read/writew instead of musb_read/writel and simply some format casts.
Signed-off-by: Bob Liu <lliubbo@gmail.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
musb_probe() only regards 0 as a wrong IRQ number, despite platform_get_irq()
that it calls returns -ENXIO in that case. It leads to musb_init_controller()
calling request_irq() with a negative IRQ number, and when it naturally
fails, the following is printed to the console:
request_irq -6 failed!
musb_init_controller failed with status -19
Fix musb_probe() to filter out the error values as well as 0.
Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This patch fixes kernel panic during s2ram, which is caused
by the below:
- musb is not put into drv data of musb platform device if
CONFIG_USB_MUSB_HDRC_HCD is defined
- glue layer driver always get musb instance via platform_get_drvdata.
The patch fixes the issue by always puting musb into drv data
of musb platform device, which is doable even the platform device
is a host controller device.
Cc: Alan Stern <stern@rowland.harvard.edu>
Cc: Sergei Shtylyov <sshtylyov@mvista.com>
Signed-off-by: Ming Lei <tom.leiming@gmail.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
* 'for-usb-linus' of master.kernel.org:/pub/scm/linux/kernel/git/sarah/xhci:
xhci: Remove more doorbell-related reads
xHCI: fix printk_ratelimit() usage
xHCI: replace dev_dbg() with xhci_dbg()
xHCI: fix cycle bit set in giveback_first_trb()
xHCI: remove redundant parameter in giveback_first_trb()
xHCI: fix queue_trb in isoc transfer
xhci: Use GFP_NOIO during device reset.
usb: Realloc xHCI structures after a hub is verified.
xhci: Do not run xhci_cleanup_msix with irq disabled
xHCI: synchronize irq in xhci_suspend()
xhci: Resume bus on any port status change.
Add a set of new tests similar to the existing ones but using
transfer buffers at an "odd" address [ie offset of +1 from
the buffer obtained by kmalloc() or usb_alloc_coherent()]
The new tests are:
#17 : bulk out (like #1) using kmalloc and DMA mapping by USB core.
#18 : bulk in (like #2) using kmalloc and DMA mapping by USB core.
#19 : bulk out (like #1) using usb_alloc_coherent()
#20 : bulk in (like #2) using usb_alloc_coherent()
#21 : control write (like #14)
#22 : isochonous out (like #15)
#23 : isochonous in (like #16)
Signed-off-by: Martin Fuzzey <mfuzzey@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
ums_realtek is used to support the power-saving function
for Realtek RTS51xx USB card readers.
Signed-off-by: wwang <wei_wang@realsil.com.cn>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
The 2232H high speed baud rates also support fractional baud
rate divisors, but when the performing the divisions before
the multiplication, the fractional bits are lost.
Signed-off-by: Daniel Glöckner <dg@emlix.com>
Acked-by: Mark Adamson <mark.adamson@ftdichip.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
With cmwq, there's no reason to use separate workqueues. Drop
uea_softc->work_q and use system_wq instead. The used work item is
sync flushed on driver detach.
Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Stanislaw Gruszka <stf_xl@wp.pl>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Sebastian Andrzej Siewior