Commit b826291c, "drivercore/dt: add a match table pointer to struct
device" added an of_match pointer to struct device to cache the
of_match_table entry discovered at driver match time. This was unsafe
because matching is not an atomic operation with probing a driver. If
two or more drivers are attempted to be matched to a driver at the
same time, then the cached matching entry pointer could get
overwritten.
This patch reverts the of_match cache pointer and reworks all users to
call of_match_device() directly instead.
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
This patch clears PORT_PLC if xhci_bus_resume() resumes a previous suspended
port, because if a port transition from U3 to U0 state, it will report a
port link state change, and software should clear the corresponding PLC bit.
It also uses hcd->speed to check if a port is a USB2 protocol port.
The patch fixes the issue that USB keyboard can not wakeup system from
hibernation.
Signed-off-by: Andiry Xu <andiry.xu@amd.com>
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
This fixes a bug in my previous (2.6.38) patch series which caused
urb->status value to be wrong after unlink (broke usbtest 11, 12).
Signed-off-by: Arvid Brodin <arvid.brodin@enea.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
in case of ehci phy mode; regulator of phy
should be enabled before initializing the
usbhs core driver.
Signed-off-by: Keshava Munegowda <keshava_mgowda@ti.com>
Tested-by: Steve Calfee <stevecalfee@gmail.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
If cable is not connected to peripheral only board when initializing the
gadget driver, then runtime pm calls are out-of-sync and the musb cannot
idle with omap2430.c. This was noted on Nokia N900 where musb prevented the
CPU to be able to enter deeper retention idle state.
This was working in 2.6.38 before runtime pm conversions but there musb
smart standby/idle modes were configured statically where they are now
updated runtime depending on use and cable status.
Reason for out-of-sync is that runtime pm is activated in function
musb_gadget.c: usb_gadget_probe_driver but suspended only in OTG mode if
cable is not connected when initializing. In peripheral only mode this leads
to out-of-sync runtime pm since runtime pm remain active and is activated
another time in omap2430.c: musb_otg_notifications for VBUS Connect event
and thus cannot suspend for VBUS Disconnect event since the use count remains
active.
Fix this by moving cable status check and pm_runtime_put call in
usb_gadget_probe_driver out of is_otg_enabled block.
Signed-off-by: Jarkko Nikula <jhnikula@gmail.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Recent runtime pm and hwmod conversions for 2.6.39 broke the musb peripheral
mode OMAP retention idle on boards where the board mode in struct
musb_hdrc_platform_data is set to MUSB_PERIPHERAL.
These conversions changed the way how the OTG_SYSCONFIG register is
configured and used in runtime. Before 2.6.39 smart standby/idle modes were
activated statically in OTG_SYSCONFIG. Those modes allow that the musb is
able to idle when peripheral device is not connected to host.
In 2.6.39 the OTG_SYSCONFIG is updated runtime depending on VBUS status.
No standby/idle modes are used when device is connected and force
standby/idle when disconnected.
Unfortunately VBUS disconnect event that handles the disconnect case lets
the peripheral musb to idle only when board mode is MUSB_OTG. Fix this by
checking the peripheral mode also.
Signed-off-by: Jarkko Nikula <jhnikula@gmail.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This reverts commit 5808544690.
To quote Richard:
I don't think this should be mainlined. It was a
misunderstanding on my part. If you see all the other hdc
drivers in the same location, they all do the same thing (i.e.
clear the interrupt status first, then do the work) that
"glitch" I think I saw was actually two back-to-back
interrupts.
Sebastian (the original author of isp1760) explained it to me a
few days after my submission.
sorry for the confusion
Cc: Richard Retanubun <RichardRetanubun@ruggedcom.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This patch disable the optional PM feature inside the Hudson3 platform under
the following conditions:
1. If an isochronous device is connected to 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.
The PM feature needs to be disabled to eliminate PLL startup delays when the
link comes out of low power state. The performance of DMA data transfer could
be impacted if system delay were encountered and in addition to the PLL start
up delays. Disabling the PM would leave room for unpredictable system delays
in order to guarantee uninterrupted data transfer to isochronous audio or
video stream devices that require time sensitive information. If data in an
audio/video stream was interrupted then erratic audio or video performance
may be encountered.
AMD PLL quirk is already implemented in OHCI/EHCI driver. After moving the
quirk code to pci-quirks.c and export them, xHCI driver can call it directly
without having the quirk implementation in itself.
Signed-off-by: Andiry Xu <andiry.xu@amd.com>
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
On a resume, when the power is lost during hibernate, the USB core will
call hub_reset_resume for the xHCI USB 2.0 roothub, but not for the USB
3.0 roothub:
[ 164.748310] usb usb1: root hub lost power or was reset
[ 164.748353] usb usb2: root hub lost power or was reset
[ 164.748487] usb usb3: root hub lost power or was reset
[ 164.748488] xhci_hcd 0000:01:00.0: Stop HCD
...
[ 164.870039] hub 4-0:1.0: hub_resume
...
[ 164.870054] hub 3-0:1.0: hub_reset_resume
This causes issues later, because the USB core assumes the USB 3.0 hub
attached to the USB 3.0 roothub is still active. It attempts to queue a
control URB for the external hub, which fails because all the device
slot contexts were released when the USB 3.0 roothub lost power:
[ 164.980044] hub 4-1:1.0: hub_resume
[ 164.980047] xhci_hcd 0000:01:00.0: Get port status returned 0x10101
[ 164.980049] xHCI xhci_urb_enqueue called with unaddressed device
[ 164.980053] hub 3-0:1.0: port 1: status 0101 change 0001
[ 164.980056] hub 4-1:1.0: hub_port_status failed (err = -22)
[ 164.980060] xhci_hcd 0000:01:00.0: `MEM_WRITE_DWORD(3'b000, 32'hffffc90008948440, 32'h202e1, 4'hf);
[ 164.980062] xHCI xhci_urb_enqueue called with unaddressed device
[ 164.980066] xhci_hcd 0000:01:00.0: clear port connect change, actual port 0 status = 0x2e1
[ 164.980069] hub 4-1:1.0: hub_port_status failed (err = -22)
[ 164.980072] xhci_hcd 0000:01:00.0: get port status, actual port 1 status = 0x2a0
[ 164.980074] xHCI xhci_urb_enqueue called with unaddressed device
[ 164.980077] xhci_hcd 0000:01:00.0: Get port status returned 0x100
[ 164.980079] hub 4-1:1.0: hub_port_status failed (err = -22)
[ 164.980082] xHCI xhci_urb_enqueue called with unaddressed device
[ 164.980085] hub 4-1:1.0: hub_port_status failed (err = -22)
[ 164.980088] hub 4-1:1.0: port 4: status 0000 change 0000
[ 164.980091] xHCI xhci_urb_enqueue called with unaddressed device
[ 164.980094] hub 4-1:1.0: activate --> -22
[ 164.980113] xHCI xhci_urb_enqueue called with unaddressed device
[ 164.980117] hub 4-1:1.0: hub_port_status failed (err = -22)
[ 164.980119] xHCI xhci_urb_enqueue called with unaddressed device
[ 164.980123] hub 4-1:1.0: can't resume port 4, status -22
[ 164.980126] hub 4-1:1.0: port 4 status ffff.ffff after resume, -22
[ 164.980129] usb 4-1.4: can't resume, status -22
[ 164.980131] hub 4-1:1.0: logical disconnect on port 4
This causes issues when a USB 3.0 hard drive is attached to the external
USB 3.0 hub when the system is hibernated:
[ 6249.849653] sd 8:0:0:0: [sdb] Unhandled error code
[ 6249.849659] sd 8:0:0:0: [sdb] Result: hostbyte=DID_ERROR driverbyte=DRIVER_OK
[ 6249.849663] sd 8:0:0:0: [sdb] CDB: Read(10): 28 00 00 00 2a 08 00 00 02 00
[ 6249.849671] end_request: I/O error, dev sdb, sector 10760
Make sure to inform the USB core that *both* xHCI roothubs lost power.
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
This patch clear PORT_POWER when suspend a USB3.0 device behind a USB3.0
external hub, so the system can suspend and resume.
Note USB3.0 device may not work after system resume and this is a temporary
workaround. The correct fix will be in future patches.
Signed-off-by: Andiry Xu <andiry.xu@amd.com>
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
If I unplug a device while the UAS driver is loaded, I get an oops
in usb_free_streams(). This is because usb_unbind_interface() calls
usb_disable_interface() which calls usb_disable_endpoint() which sets
ep_out and ep_in to NULL. Then the UAS driver calls usb_pipe_endpoint()
which returns a NULL pointer and passes an array of NULL pointers to
usb_free_streams().
I think the correct fix for this is to check for the NULL pointer
in usb_free_streams() rather than making the driver check for this
situation. My original patch for this checked for dev->state ==
USB_STATE_NOTATTACHED, but the call to usb_disable_interface() is
conditional, so not all drivers would want this check.
Note from Sarah Sharp: This patch does avoid a potential dereference,
but the real fix (which will be implemented later) is to set the
.soft_unbind flag in the usb_driver structure for the UAS driver, and
all drivers that allocate streams. The driver should free any streams
when it is unbound from the interface. This avoids leaking stream rings
in the xHCI driver when usb_disable_interface() is called.
This should be queued for stable trees back to 2.6.35.
Signed-off-by: Matthew Wilcox <willy@linux.intel.com>
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Cc: stable@kernel.org
Currently, when resetting a device, xHCI driver disables all but one
endpoints and frees their rings, but leaves alone any streams that
might have been allocated. Later, when users try to free allocated
streams, we oops in xhci_setup_no_streams_ep_input_ctx() because
ep->ring is NULL.
Let's free not only rings but also stream data as well, so that
calling free_streams() on a device that was reset will be safe.
This should be queued for stable trees back to 2.6.35.
Reviewed-by: Micah Elizabeth Scott <micah@vmware.com>
Signed-off-by: Dmitry Torokhov <dtor@vmware.com>
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Cc: stable@kernel.org
When we get a port status change event, we need to figure out what type of
port it came from: a USB 3.0 port, or a USB 2.0/1.1 port. We can't know
which usb_hcd to use until that point, so hcd will be NULL for part of the
function. Unfortunately, if any of the sanity checks fail, we'll jump to
the cleanup label before hcd is set to a valid pointer, and then we'll
attempt to tell the USB core to kick the hcd, which is NULL.
Skip kicking the roothub if the sanity checks fail.
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
When parsing exponent-expressed intervals we subtract 1 from the
value and then expect it to match with original + 1, which is
highly unlikely, and we end with frequent spew:
usb 3-4: ep 0x83 - rounding interval to 512 microframes
Also, parsing interval for fullspeed isochronous endpoints was
incorrect - according to USB spec they use exponent-based
intervals (but xHCI spec claims frame-based intervals). I trust
USB spec more, especially since USB core agrees with it.
This should be queued for stable kernels back to 2.6.31.
Reviewed-by: Micah Elizabeth Scott <micah@vmware.com>
Signed-off-by: Dmitry Torokhov <dtor@vmware.com>
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Cc: stable@kernel.org
The logic of the handling Missed Service Error Events was pretty
confusing as we were checking the same condition several times.
In addition, it caused compiler warning since the compiler could
not figure out that event_trb is actually unused in case we are
skipping current TD.
Fix that by rearranging "skip" condition checks, and factor out
skip_isoc_td() so that it is called explicitly.
Signed-off-by: Dmitry Torokhov <dtor@vmware.com>
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Remove 'inline' markings from file-local functions and let compiler
do its job and inline what makes sense for given architecture.
Signed-off-by: Dmitry Torokhov <dtor@vmware.com>
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
There were some places that compared port_speed == -1 where port_speed
is a u8. This doesn't work unless we cast the -1 to u8. Some places
did it correctly.
Instead of using -1 directly, I've created a DUPLICATE_ENTRY define
which does the cast and is more descriptive as well.
Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Macro arguments used in expressions need to be enclosed in parenthesis
to avoid unpleasant surprises.
This should be queued for kernels back to 2.6.31
Signed-off-by: Dmitry Torokhov <dtor@vmware.com>
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Cc: stable@kernel.org
Isochronous and interrupt SuperSpeed endpoints use the same mechanisms
for decoding bInterval values as HighSpeed ones so adjust the code
accordingly.
Also bandwidth reservation for SuperSpeed matches highspeed, not
low/full speed.
Signed-off-by: Dmitry Torokhov <dtor@vmware.com>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This patch moves the HcInterrupt register write to clear the
pending interrupt to after the isr work is done, doing this removes
glitches in the irq line.
Signed-off-by: Richard Retanubun <richardretanubun@ruggedcom.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
The driver did not take the zero flag in the USB request. If the
request length is the same as the endpoint's maxpacket, an additional
ZLP with no data has to be transmitted.
The method used here is inspired to what is done in fsl_udc_core.c
(and pxa27x_udc.c and at91_udc.c) where this is supported.
There already was a discussion about this topic with people from
Keymile, and I propose here a better implementation:
http://thread.gmane.org/gmane.linux.usb.general/38951
Signed-off-by: Valentin Longchamp <valentin.longchamp@keymile.com>
Acked-by: Li Yang <leoli@freescale.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
There are two -ENODEV error paths in qcprobe where the allocated private
data is not freed, this patch adds the two missing kfrees to avoid
leaking memory on the error path
Signed-off-by: Steven Hardy <shardy@redhat.com>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Rework the qcprobe logic such that serial->private is not set when
qcprobe exits with -ENODEV, otherwise serial->private will point to freed
memory on -ENODEV
Signed-off-by: Steven Hardy <shardy@redhat.com>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
qcprobe function allocates serial->private but this is never freed, this
patch adds a new function qc_release() which frees serial->private, after
calling usb_wwan_release
Signed-off-by: Steven Hardy <shardy@redhat.com>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
usb serial: ftdi_sio: add two missing USB ID's for Hameg interfaces HO720
and HO730
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Bind only modem AT command endpoint to option.
Signed-off-by: Marius B. Kotsbak <marius@kotsbak.com>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
There was an unlock missing on the error path.
Also I did a small cleanup by changing ep->dev->lock for just dev->lock.
They're the same lock, but dev->lock is shorter and that's how it is
used for the spin_unlock_irqrestore() call.
Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Booting latest kernel on my test machine produces a lockdep
warning from the usb_amd_find_chipset_info() function:
WARNING: at /data/lemmy/linux.trees.git/kernel/lockdep.c:2465 lockdep_trace_alloc+0x95/0xc2()
Hardware name: Snook
Modules linked in:
Pid: 959, comm: work_for_cpu Not tainted 2.6.39-rc2+ #22
Call Trace:
[<ffffffff8103c0d4>] warn_slowpath_common+0x80/0x98
[<ffffffff812387e6>] ? T.492+0x24/0x26
[<ffffffff8103c101>] warn_slowpath_null+0x15/0x17
[<ffffffff81068667>] lockdep_trace_alloc+0x95/0xc2
[<ffffffff810ed9ac>] slab_pre_alloc_hook+0x18/0x3b
[<ffffffff810ef227>] kmem_cache_alloc_trace+0x25/0xba
[<ffffffff812387e6>] T.492+0x24/0x26
[<ffffffff81238816>] pci_get_subsys+0x2e/0x73
[<ffffffff8123886c>] pci_get_device+0x11/0x13
[<ffffffff814082a9>] usb_amd_find_chipset_info+0x3f/0x18a
...
It turns out that this function calls pci_get_device under a spin_lock
with irqs disabled, but the pci_get_device function is only allowed in
preemptible context.
This patch fixes the warning by making all data-structure
modifications on temporal storage and commiting this back
into the visible structure at the end. While at it, this
patch also moves the pci_dev_put calls out of the spinlocks
because this function might sleep too.
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
In file included from drivers/usb/host/ohci-hcd.c:1028:0:
drivers/usb/host/ohci-au1xxx.c:36:7: warning: "__BIG_ENDIAN" is not defined
Signed-off-by: Yoichi Yuasa <yuasa@linux-mips.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Add PID 0x0103 for serial port of the OCT DK201 docking station.
Reported-by: Jan Hoogenraad <jan@hoogenraad.net>
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Fix build failure introduced by commit
7acc6197b7 (usb: musb: Idle path retention
and offmode support for OMAP3) when building without gadget
support.
CC drivers/usb/musb/omap2430.o
drivers/usb/musb/omap2430.c: In function ‘musb_otg_notifications’:
drivers/usb/musb/omap2430.c:262: error: ‘struct musb’ has no member named ‘gadget_driver’
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Cc: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This patch (as1458) fixes a problem affecting ultra-reliable systems:
When hardware failover of an EHCI controller occurs, the data
structures do not get released correctly. This is because the routine
responsible for removing unused QHs from the async schedule assumes
the controller is running properly (the frame counter is used in
determining how long the QH has been idle) -- but when a failover
causes the controller to be electronically disconnected from the PCI
bus, obviously it stops running.
The solution is simple: Allow scan_async() to remove a QH from the
async schedule if it has been idle for long enough _or_ if the
controller is stopped.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Reported-and-Tested-by: Dan Duval <dan.duval@stratus.com>
CC: <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
During processing of bunch of eem frames if "echo" command is found
skb is cloned and the cloned version should be used to send reply.
Unfortunately, the data of the original skb were actually used and
the cloned skb is never freed.
Using the cloned skb and freeing the skb in the completion callback
for usb request.
Signed-off-by: Yauheni Kaliuta <yauheni.kaliuta@nokia.com>
Reviewed-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
I added new ProdutIds for two devices from CTI GmbH Leipzig.
Signed-off-by: Christian Simon <simon@swine.de>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Because the disconnect function in the composite driver will call spin_lock,
this driver has to call spin_unlock before calling driver->disconnet().
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Disable USB_ARCH_HAS_EHCI in arch Kconfig and enable it in usb Kconfig
Warning log:
warning: (MICROBLAZE) selects USB_ARCH_HAS_EHCI which has unmet
direct dependencies (USB_SUPPORT)
Signed-off-by: Michal Simek <monstr@monstr.eu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
ep_read() acquires data->lock mutex in get_ready_ep() and releases it on
all paths except for one: when usb_endpoint_xfer_isoc() failed. The
patch adds mutex_unlock(&data->lock) at that path.
Found by Linux Driver Verification project (linuxtesting.org).
Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Fix printk format build warning and grammar typo on same line.
drivers/usb/host/isp1760-hcd.c:300: warning: format '%lu' expects type 'long unsigned int', but argument 4 has type 'size_t'
Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* 'for-greg' of git://gitorious.org/usb/usb:
USB: musb: blackfin: work around anomaly 05000450
usb: musb: Fix the crash issue during reboot
usb: musb: gadget: check the correct list_head
usb: musb: temporarily make it bool
USB: musb: dereferencing an iomem pointer
USB: musb: silence printk format warning
USB: musb: using 0 instead of NULL
USB: musb: add missing unlock in cppi_interrupt()
usb: musb: ux500: copy dma mask from platform device to musb device
usb: musb: clear AUTOSET while clearing DMAENAB
DMA mode 1 data corruption anomaly on Blackfin systems. This issue is
specific to the Blackfin silicon as the bug appears to be related to the
connection of the musb ip to the bus/dma fabric.
Data corruption when using USB DMA mode 1. (Issue manager 17-01-0105)
DMA mode 1 allows large size transfers to generate a single interrupt
at the end of the entire transfer. The transfer is split up in packets
of length specified in the Maximum Packet Size field for that endpoint.
If the transfer size is not an integer multiple of the Maximum Packet
Size, a short packet will be present at the end of the transfer.
Under certain conditions this packet may be corrupted in the USB FIFO.
Workaround:
Use DMA mode 1 to transfer (n* Maximum Packet Size) and schedule DMA
mode 0 to transfer the short packet.
As an example if your transfer size is 33168 bytes and Maximum Packet
Size equals 512, schedule [33168 - (33168 mod 512)] in DMA mode 1 and
the remainder (33168 mod 512) in DMA mode 0.
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>
We are now using our own list_head, so we should
be checking against that, not the gadget driver's
list_head.
Signed-off-by: Felipe Balbi <balbi@ti.com>
Due to the recent changes to musb's glue layers,
we can't compile musb-hdrc as a module - compilation
will break due to undefined symbol musb_debug. In
order to fix that, we need a big re-work of the
debug support on the MUSB driver.
Because that would mean a lot of new code coming
into the -rc series, it's best to defer that to
next merge window and for now just disable module
support for MUSB.
Once we get the refactor of the debugging support
done, we can simply revert this patch and things
will go back to normal again.
Cc: stable@kernel.org # v2.6.38
Signed-off-by: Felipe Balbi <balbi@ti.com>
"tx_ram" points to io memory. We can't dereference it directly. Sparse
complains about this: "drivers/usb/musb/cppi_dma.c:1205:25: warning:
dereference of noderef expression"
Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Gcc gives the following warnings:
drivers/usb/musb/cppi_dma.c: In function ‘cppi_next_tx_segment’:
drivers/usb/musb/cppi_dma.c:600: warning: format ‘%x’ expects type ‘unsigned int’, but argument 8 has type ‘dma_addr_t’
drivers/usb/musb/cppi_dma.c: In function ‘cppi_next_rx_segment’:
drivers/usb/musb/cppi_dma.c:822: warning: format ‘%x’ expects type ‘unsigned int’, but argument 9 has type ‘dma_addr_t’
drivers/usb/musb/cppi_dma.c: In function ‘cppi_rx_scan’:
drivers/usb/musb/cppi_dma.c:1042: warning: format ‘%08x’ expects type ‘unsigned int’, but argument 4 has type ‘dma_addr_t’
drivers/usb/musb/cppi_dma.c:1114: warning: format ‘%08x’ expects type ‘unsigned int’, but argument 7 has type ‘dma_addr_t’
dma_addr_t is sometimes 32 bit and sometimes 64. We normally cast them
to unsigned long long for printk().
Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
On the completion of tx dma, dma is disabled by clearing MUSB_TXCSR_DMAENAB in
TXCSR. If MUSB_TXCSR_AUTOSET was set in txstate() it will remain set although
it is not needed in PIO mode. Clear it as soon as it is not needed.
Signed-off-by: Mian Yousaf Kaukab <mian.yousaf.kaukab@stericsson.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Grant Likely