module_platform_driver_probe() has the advantage that the .probe() and
.remove() calls can live in .init.text and .exit.text respectively and
so some memory is saved. The downside is that dynamic bind and unbind
are impossible. As the driver doesn't benefit from the advantages (both
.probe and .remove are defined in plain .text), stop suffering from the
downsides and use module_platform_driver() instead of
module_platform_driver_probe().
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Link: https://lore.kernel.org/r/20231017204442.1625925-11-u.kleine-koenig@pengutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
module_platform_driver_probe() has the advantage that the .probe() and
.remove() calls can live in .init.text and .exit.text respectively and
so some memory is saved. The downside is that dynamic bind and unbind
are impossible. As the driver doesn't benefit from the advantages (both
.probe and .remove are defined in plain .text), stop suffering from the
downsides and use module_platform_driver() instead of
module_platform_driver_probe().
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Link: https://lore.kernel.org/r/20231017204442.1625925-10-u.kleine-koenig@pengutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
module_platform_driver_probe() has the advantage that the .probe() and
.remove() calls can live in .init.text and .exit.text respectively and
so some memory is saved. The downside is that dynamic bind and unbind
are impossible. As the driver doesn't benefit from the advantages (both
.probe and .remove are defined in plain .text), stop suffering from the
downsides and use module_platform_driver() instead of
module_platform_driver_probe().
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Link: https://lore.kernel.org/r/20231017204442.1625925-9-u.kleine-koenig@pengutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Add a test to check if inner rt curves are upgraded to sc curves.
Signed-off-by: Pedro Tammela <pctammela@mojatatu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Commit 14485de431 ("usb: Use device_get_match_data()") dropped the
unconditional use of ci_hdrc_usb2_of_match resulting in this warning:
drivers/usb/chipidea/ci_hdrc_usb2.c:41:34: warning: unused variable 'ci_hdrc_usb2_of_match' [-Wunused-const-variable]
The fix is to drop of_match_ptr() which is not necessary because DT is
always used for this driver.
Fixes: 14485de431 ("usb: Use device_get_match_data()")
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202310131627.M43j234A-lkp@intel.com/
Signed-off-by: Rob Herring <robh@kernel.org>
Acked-by: Peter Chen <peter.chen@kernel.org>
Link: https://lore.kernel.org/r/20231019183015.841460-1-robh@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Add Nuvoton NPCM BMC SoCs support to USB ChipIdea driver.
NPCM SoC includes ChipIdea IP block that is used for USB device controller
mode.
Signed-off-by: Tomer Maimon <tmaimon77@gmail.com>
Acked-by: Peter Chen <peter.chen@kernel.org>
Link: https://lore.kernel.org/r/20231017195903.1665260-4-tmaimon77@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Adding CI_HDRC_FORCE_VBUS_ACTIVE_ALWAYS flag to modify the vbus_active
parameter to active in case the ChipIdea USB IP role is device-only and
there is no otgsc register.
Signed-off-by: Tomer Maimon <tmaimon77@gmail.com>
Acked-by: Peter Chen <peter.chen@kernel.org>
Link: https://lore.kernel.org/r/20231017195903.1665260-2-tmaimon77@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The "reset-gpios" is optional in real case, for example reset pin is
is hard wired to "high". And this fact is also reflected by the
devm_gpio_get_optional() calling in driver code.
Signed-off-by: Jisheng Zhang <jszhang@kernel.org>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/r/20231018150448.1980-1-jszhang@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Switch internal usb-storage quirk value to 64-bit as quirks currently
use all 32 bits.
Signed-off-by: Milan Broz <gmazyland@gmail.com>
Reviewed-by: Alan Stern <stern@rowland.harvard.edu>
Link: https://lore.kernel.org/r/20231016072604.40179-3-gmazyland@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This patch removes macro that was used only by commit that was reverted
in commit ab4b71644a ("USB: storage: fix Huawei mode switching
regression")
Signed-off-by: Milan Broz <gmazyland@gmail.com>
Reviewed-by: Alan Stern <stern@rowland.harvard.edu>
Link: https://lore.kernel.org/r/20231016072604.40179-2-gmazyland@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
There is a 120ms delay implemented for allowing the XHCI host controller to
detect a U3 wakeup pulse. The intention is to wait for the device to retry
the wakeup event if the USB3 PORTSC doesn't reflect the RESUME link status
by the time it is checked. As per the USB3 specification:
tU3WakeupRetryDelay ("Table 7-12. LTSSM State Transition Timeouts")
This would allow the XHCI resume sequence to determine if the root hub
needs to be also resumed. However, in case there is no device connected,
or if there is only a HSUSB device connected, this delay would still affect
the overall resume timing.
Since this delay is solely for detecting U3 wake events (USB3 specific)
then ignore this delay for the disconnected case and the HSUSB connected
only case.
[skip helper function, rename usb3_connected variable -Mathias ]
Signed-off-by: Wesley Cheng <quic_wcheng@quicinc.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://lore.kernel.org/r/20231019102924.2797346-20-mathias.nyman@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
If this driver enables the xHC clocks while resuming from sleep, it calls
clk_prepare_enable() without checking for errors and blithely goes on to
read/write the xHC's registers -- which, with the xHC not being clocked,
at least on ARM32 usually causes an imprecise external abort exceptions
which cause kernel oops. Currently, the chips for which the driver does
the clock dance on suspend/resume seem to be the Broadcom STB SoCs, based
on ARM32 CPUs, as it seems...
Found by Linux Verification Center (linuxtesting.org) with the Svace static
analysis tool.
Fixes: 8bd954c561 ("usb: host: xhci-plat: suspend and resume clocks")
Signed-off-by: Sergey Shtylyov <s.shtylyov@omp.ru>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://lore.kernel.org/r/20231019102924.2797346-19-mathias.nyman@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
In some situations where xhci removal happens parallel to xhci_handshake,
we encounter a scenario where the xhci_handshake can't succeed, and it
polls until timeout.
If xhci_handshake runs until timeout it can on some platforms result in
a long wait which might lead to a watchdog timeout.
Add a helper that checks xhci status during the handshake, and exits if
set state is entered. Use this helper in places where xhci_handshake is
called unlocked and has a long timeout. For example xhci command timeout
and xhci reset.
[commit message and code comment rewording -Mathias]
Signed-off-by: Udipto Goswami <quic_ugoswami@quicinc.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://lore.kernel.org/r/20231019102924.2797346-18-mathias.nyman@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The current function that both removes and frees an interrupter isn't
optimal when using several interrupters. The array of interrupters need
to be protected with a lock while removing interrupters, but the default
xhci spin lock can't be used while freeing the interrupters event ring
segment table as dma_free_coherent() should be called with IRQs enabled.
There is no need to free the interrupter under the lock, so split this
code into separate unlocked free part, and a lock protected remove part.
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://lore.kernel.org/r/20231019102924.2797346-17-mathias.nyman@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Use the low-power states of the underlying platform to enable runtime PM.
If the platform doesn't support runtime D3, then enabling default RPM will
result in the controller malfunctioning, as in the case of hotplug devices
not being detected because of a failed interrupt generation.
Cc: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Basavaraj Natikar <Basavaraj.Natikar@amd.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://lore.kernel.org/r/20231019102924.2797346-16-mathias.nyman@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The AMD USB host controller (1022:43f7) isn't going into PCI D3 by default
without anything connected. This is because the policy that was introduced
by commit a611bf473d ("xhci-pci: Set runtime PM as default policy on all
xHC 1.2 or later devices") only covered 1.2 or later.
The 1.1 specification also has the same requirement as the 1.2
specification for D3 support. So expand the runtime PM as default policy
to all AMD 1.1 devices as well.
Fixes: a611bf473d ("xhci-pci: Set runtime PM as default policy on all xHC 1.2 or later devices")
Link: https://composter.com.ua/documents/xHCI_Specification_for_USB.pdf
Co-developed-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Basavaraj Natikar <Basavaraj.Natikar@amd.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://lore.kernel.org/r/20231019102924.2797346-15-mathias.nyman@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Increase the event ring dequeue pointer for port change events in the
same way as other event types. No need to handle it separately.
This only touches the driver side tracking of event ring dequeue.
Note: this does move forward the event ring dequeue increase for port
change events a bit.
Previously the dequeue was increased before temporarily dropping
the xhci lock while kicking roothub polling.
Now dequeue is increased after re-aquiring the lock.
This should not matter as event ring dequeue is not touched at all by
hub thread. It's only touched in xhci interrupt handler.
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://lore.kernel.org/r/20231019102924.2797346-14-mathias.nyman@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
No matter what type of event we receive we want to increase the event
ring dequeue pointer one step for every event that is handled.
For unknown reasons the event ring dequeue increase is done inside the
transfer event handler and port event handler.
As the transfer event handler got more complex and can now loop through
several transfer TRBs on a transfer ring, there were additinal checks
added to avoid increasing event ring dequeue more than one step.
No need for elaborate checks to avoid increasing event ring dequeue
in case the transfer event handler goes through a loop.
Just increasing the event ring dequeue outside the transfer event
handler.
End goal is to increase event ring dequeue in just one place.
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://lore.kernel.org/r/20231019102924.2797346-13-mathias.nyman@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
xhci_alloc_erst() has global scope even though it's only used in
xhci-mem.c. Declare it static.
xhci_free_erst() was removed by commit b17a57f89f ("xhci: Refactor
interrupter code for initial multi interrupter support."), but a
declaration in xhci.h still remains. Drop it.
Signed-off-by: Lukas Wunner <lukas@wunner.de>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://lore.kernel.org/r/20231019102924.2797346-12-mathias.nyman@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Commit ebd88cf507 ("xhci: Remove unused defines for ERST_SIZE and
ERST_ENTRIES") removed the ERST_SIZE macro but retained a code comment
explaining the quantity chosen in the macro.
Remove the code comment as well.
Signed-off-by: Lukas Wunner <lukas@wunner.de>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://lore.kernel.org/r/20231019102924.2797346-11-mathias.nyman@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Mathias notes that the ERST_PTR_MASK macro is named as if it's masking
the Event Ring Dequeue Pointer in the ERDP register, but in actuality
it's masking the inverse.
Invert the macro's value for clarity.
Migrate it to the modern GENMASK_ULL() syntax to avoid u64 casts.
Signed-off-by: Lukas Wunner <lukas@wunner.de>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://lore.kernel.org/r/20231019102924.2797346-10-mathias.nyman@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Ring segments have just been amended with a monotonically increasing
number.
To allow developers to inspect the segment numbers and ensure
correctness in particular after ring expansion, expose them in each
ring's "trbs" file in debugfs.
Signed-off-by: Lukas Wunner <lukas@wunner.de>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://lore.kernel.org/r/20231019102924.2797346-9-mathias.nyman@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
When expanding a ring at its "end", ring->last_seg needs to be updated
for Event Rings as well, not just for all the other ring types.
This is not a fix because ring expansion currently isn't done on the
Event Ring. It's just in preparation for when it's added.
Signed-off-by: Lukas Wunner <lukas@wunner.de>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://lore.kernel.org/r/20231019102924.2797346-8-mathias.nyman@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Initial xhci_ring allocation has just been amended to assign a
monotonically increasing number to each ring segment.
However rings may be expanded after initial allocation.
So number newly inserted segments starting from the preceding segment in
the ring and renumber all segments succeeding the newly inserted ones.
This is not a fix because ring expansion currently isn't done on the
Event Ring and that's the only ring type using the segment number.
It's just in preparation for when either Event Ring expansion is added
or when other ring types start making use of the segment number.
Signed-off-by: Lukas Wunner <lukas@wunner.de>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://lore.kernel.org/r/20231019102924.2797346-7-mathias.nyman@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Users have reported log spam created by "Event Ring Full" xHC event
TRBs. These are caused by interrupt latency in conjunction with a very
busy set of devices on the bus. The errors are benign, but throughput
will suffer as the xHC will pause processing of transfers until the
Event Ring is drained by the kernel.
Commit dc0ffbea57 ("usb: host: xhci: update event ring dequeue pointer
on purpose") mitigated the issue by advancing the Event Ring Dequeue
Pointer already after half a segment has been processed. Nevertheless,
providing a larger Event Ring would be useful to cope with load peaks.
Expand the number of event TRB slots available by increasing the number
of Event Ring segments in the ERST.
Controllers have a hardware-defined limit as to the number of ERST
entries they can process, but with up to 32k it can be excessively high
(sec 5.3.4). So cap the actual number at 2 (configurable through the
ERST_MAX_SEGS macro), which seems like a reasonable quantity. It is
supported by any xHC because the limit in the HCSPARAMS2 register is
defined as a power of 2. Renesas uPD720201 and VIA VL805 controllers
do not support more than 2 ERST entries.
An alternative to increasing the number of Event Ring segments would be
an increase of the segment size. But that requires allocating multiple
contiguous pages, which may be impossible if memory is fragmented.
Signed-off-by: Jonathan Bell <jonathan@raspberrypi.com>
Signed-off-by: Lukas Wunner <lukas@wunner.de>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://lore.kernel.org/r/20231019102924.2797346-6-mathias.nyman@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
When using more than one Event Ring segment (ERSTSZ > 1), software shall
set the DESI bits in the ERDP register to the number of the segment to
which the upper ERDP bits are pointing. The xHC may use the DESI bits
as a shortcut to determine whether it needs to check for an Event Ring
Full condition: If it's enqueueing events in a different segment, it
need not compare its internal Enqueue Pointer with the Dequeue Pointer
in the upper bits of the ERDP register (sec 5.5.2.3.3).
Not setting the DESI bits correctly can result in the xHC enqueueing
events past the Dequeue Pointer. On Renesas uPD720201 host controllers,
incorrect DESI bits cause an interrupt storm. For comparison, VIA VL805
host controllers do not exhibit such problems. Perhaps they do not take
advantage of the optimization afforded by the DESI bits.
To fix the issue, assign the segment number to each struct xhci_segment
in xhci_segment_alloc(). When advancing the Dequeue Pointer in
xhci_update_erst_dequeue(), write the segment number to the DESI bits.
On driver probe, set the DESI bits to zero in xhci_set_hc_event_deq() as
processing starts in segment 0. Likewise on driver teardown, clear the
DESI bits to zero in xhci_free_interrupter() when clearing the upper
bits of the ERDP register. Previously those functions (incorrectly)
treated the DESI bits as if they're declared RsvdP.
Signed-off-by: Lukas Wunner <lukas@wunner.de>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://lore.kernel.org/r/20231019102924.2797346-5-mathias.nyman@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The next_trb() helper relies on a link TRB at the end of a ring segment
to know a segment ends. This works well with transfer rings that use
link trbs, but not with event rings.
Event rings segments are always filled by host to segment size
before moving to next segment. It does not use link TRBs
Check for both link trb and full segment in next_trb() helper to
support event rings.
Useful if several interrupters with several event rings are supported.
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://lore.kernel.org/r/20231019102924.2797346-4-mathias.nyman@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
With several xhci controllers active at the same time its hard to
keep track of ports without knowing bus number
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://lore.kernel.org/r/20231019102924.2797346-3-mathias.nyman@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
We want to trace other port structure members than just port number
so pass entire port structure as parameter instead of just port number.
Dig the port number from the port structure.
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://lore.kernel.org/r/20231019102924.2797346-2-mathias.nyman@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The fpga core currently assumes that all manager, bridge, and region
devices have a parent device associated with a driver that can be used
to take the module's refcount. This behavior causes the fpga test suites
to crash with a null-ptr-deref since parent fake devices do not have a
driver. This patch disables all fpga KUnit test suites when loadable
module support is enabled until the fpga core is fixed. Test suites
can still be run using the KUnit default UML kernel.
Signed-off-by: Marco Pagani <marpagan@redhat.com>
Acked-by: Xu Yilun <yilun.xu@intel.com>
Fixes: ccbc1c3021 ("fpga: add an initial KUnit suite for the FPGA Manager")
Link: https://lore.kernel.org/r/20231018163814.100803-1-marpagan@redhat.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
vme_check_window() uses printk() for logging error message. This
leads to the following checkpatch warning:
WARNING: Prefer [subsystem eg: netdev]_err([subsystem]dev, ... then
dev_err(dev, ... then pr_err(... to printk(KERN_ERR ...
Use dev_err() instead. Pass VME bridge device to vme_check_window() so
that the error message can be logged with the bridge device context.
Signed-off-by: Soumya Negi <soumya.negi97@gmail.com>
Suggested-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Link: https://lore.kernel.org/r/221344ede933b1d9e6c31310b0f4dbb8be809c86.1697763267.git.soumya.negi97@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Don't check for empty bridge device & resource in vme_alloc_consistent()
& vme_free_consistent() since they can not be NULL. Both the VME bridge
device and the VME resource that are used in these functions are set at
probe time.
Signed-off-by: Soumya Negi <soumya.negi97@gmail.com>
Suggested-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Link: https://lore.kernel.org/r/049bbedf458e8ac40f3dfff9c9b25dce89f5b642.1697763267.git.soumya.negi97@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Don't log error message in find_bridge(). The printk() triggers a
checkpatch warning:
WARNING: Prefer [subsystem eg: netdev]_err([subsystem]dev, ... then
dev_err(dev, ... then pr_err(... to printk(KERN_ERR ...
It can't be replaced by dev_err() & using pr_err() is not helpful as it
doesn't give much context to the user. It is better to remove it.
Signed-off-by: Soumya Negi <soumya.negi97@gmail.com>
Suggested-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Link: https://lore.kernel.org/r/028725ebbc522f73c39f5b1ec4cc2bdbdf588971.1697763267.git.soumya.negi97@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Replace function names in message strings with __func__ to fix
all checkpatch warnings like:
WARNING: Prefer using '"%s...", __func__' to using 'vme_lm_get',
this function's name, in a string
Signed-off-by: Soumya Negi <soumya.negi97@gmail.com>
Acked-by: Andi Shyti <andi.shyti@linux.intel.com>
Link: https://lore.kernel.org/r/db4ad6b878c4bb08fd5d15cf4a9287d7bb8c30df.1697763267.git.soumya.negi97@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
vme.c uses printk() to log messages. To improve and standardize message
formatting, use logging mechanisms dev_err()/dev_warn() instead. Retain
the printk log levels of the messages during replacement.
Issue found by checkpatch.pl
Signed-off-by: Soumya Negi <soumya.negi97@gmail.com>
Acked-by: Andi Shyti <andi.shyti@linux.intel.com>
Link: https://lore.kernel.org/r/a36a0b839f9c21efe1f2df6f9272ae882fd04fb8.1697763267.git.soumya.negi97@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Drops variable ret as it is unused in the code. This therefore modifies
the return type of program_mode_registers() to void from int since the
return value is being ignored in all function calls. This improves code
readability and maintainability.
Suggested-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Dorcas AnonoLitunya <anonolitunya@gmail.com>
Link: https://lore.kernel.org/r/20231019101348.22076-3-anonolitunya@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The function snd_bcm2835_new_ctl() is declared but not defined.
Its definition was removed 1 year ago in the
commit 143b67f19b ("staging: bcm2835-audio: remove compat ALSA card")
Signed-off-by: Calvince Otieno <calvncce@gmail.com>
Link: https://lore.kernel.org/r/ZTDap2d5X7eXXPo2@lab-ubuntu
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Checkpatch suggests using strscpy() instead of strcpy().
The advantages of strscpy() are that it always adds a NUL terminator
and prevents read/write overflows if the source string is not properly
terminated.
strcpy() lacks built-in bounds checking for the destination buffer,
making it susceptible to buffer overflows. These overflows can lead
to various unpredictable behaviors.
In this specific context, both strscpy and strcpy performs the same
operation without any functional difference.
The reason for this equivalence is that the driver_name string "vme_fake"
is shorter than the size of the fake_bridge->name array which is defined
as 16 characters (struct vme_bridge {char name[VMENAMSIZ];...}). Thus,
there is no risk of buffer overflow in either case. VMENAMSIZ variable
holds a constant value of 16 (#define VMENAMSIZ 16)
The null-terminated "vme_fake" string
(static const char driver_name[] = "vme_fake";) can be safely copied into
fake_bridge->name using either strscpy or strcpy.
While using strscpy() does not address any bugs, it is considered a better
practice and aligns with checkpatch recommendations.
Reviewed-by: Dan Carpenter <dan.carpenter@linaro.org>
Signed-off-by: Calvince Otieno <calvncce@gmail.com>
Link: https://lore.kernel.org/r/ZTDS2H48JBUTiwZi@lab-ubuntu
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Drop MODULE_ALIAS in favour of MODULE_DEVICE_TABLE as the module
alias should be picked from there.
Signed-off-by: Umang Jain <umang.jain@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Link: https://lore.kernel.org/r/20231019090128.430297-4-umang.jain@ideasonboard.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Drop MODULE_ALIAS in favour of MODULE_DEVICE_TABLE as the module
alias should be dropped from there.
Signed-off-by: Umang Jain <umang.jain@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Link: https://lore.kernel.org/r/20231019090128.430297-3-umang.jain@ideasonboard.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
VC04 has now a independent bus vchiq_bus to register its devices.
However, the module auto-loading for bcm2835-audio and bcm2835-camera
currently happens through MODULE_ALIAS() macro specified explicitly.
The correct way to auto-load a module, is when the alias is picked
out from MODULE_DEVICE_TABLE(). In order to get there, we need to
introduce vchiq_device_id and add relevant entries in file2alias.c
infrastructure so that aliases can be generated. This patch targets
adding vchiq_device_id and do_vchiq_entry, in order to
generate those alias using the /script/mod/file2alias.c.
Going forward the MODULE_ALIAS() from bcm2835-camera and bcm2835-audio
will be dropped, in favour of MODULE_DEVICE_TABLE being used there.
The alias format for vchiq_bus devices will be "vchiq:<dev_name>".
Adjust the vchiq_bus_uevent() to reflect that.
Signed-off-by: Umang Jain <umang.jain@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Link: https://lore.kernel.org/r/20231019090128.430297-2-umang.jain@ideasonboard.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
As per device_register() documentation, this kfree() on error path will
crash. The call to put_device() is all that is needed here to free the
memory.
Fixes: 027e5703de ("staging: vc04_services: vchiq_arm: Add new bus type and device type")
Signed-off-by: Umang Jain <umang.jain@ideasonboard.com>
Reviewed-by: Stefan Wahren <stefan.wahren@i2se.com>
Link: https://lore.kernel.org/r/20231018055228.825524-1-umang.jain@ideasonboard.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
No significant improvements have been done to this driver since commit
a7c3ddf29a ("staging: qlge: clean up debugging code in the QL_ALL_DUMP
ifdef land") in January 2021. The driver should not stay in staging
forever. Since it has been abandoned by the vendor and no one has stepped
up to maintain it, delete it.
If some users manifest themselves, the driver will be restored to
drivers/net/ as suggested in the linked message.
Link: https://lore.kernel.org/netdev/20231019074237.7ef255d7@kernel.org/
Suggested-by: Jakub Kicinski <kuba@kernel.org>
Cc: Manish Chopra <manishc@marvell.com>
Cc: Coiby Xu <coiby.xu@gmail.com>
Signed-off-by: Benjamin Poirier <benjamin.poirier@gmail.com>
Acked-by: Jakub Kicinski <kuba@kernel.org>
Link: https://lore.kernel.org/r/20231020124457.312449-3-benjamin.poirier@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Update TODO file to reflect the changes that have been done:
* multiple functions were renamed to have the "qlge_" prefix in commit
f8c047be54 ("staging: qlge: use qlge_* prefix to avoid namespace
clashes with other qlogic drivers")
* a redundant memset() was removed in commit 953b940093 ("staging: qlge:
Initialize devlink health dump framework")
* the loop boundary in ql(ge)_alloc_rx_buffers() was updated in commit
e4c911a73c ("staging: qlge: Remove rx_ring.type")
* pci_enable_msi() was replaced in commit 4eab532dca ("staging:
qlge/qlge_main.c: Replace depracated MSI API.")
* pci_dma_* were replaced in commit e955a071b9 ("staging: qlge: replace
deprecated apis pci_dma_*")
* the while loops were rewritten in commit 41e1bf811a ("Staging: qlge:
Rewrite two while loops as simple for loops")
* indentation was fixed in commit 0eb79fd1e9 ("staging: qlge: cleanup
indent in qlge_main.c")
I also slipped in one new TODO item, naughty me!
Signed-off-by: Benjamin Poirier <benjamin.poirier@gmail.com>
Acked-by: Jakub Kicinski <kuba@kernel.org>
Link: https://lore.kernel.org/r/20231020124457.312449-2-benjamin.poirier@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This is quite a large set of changes but mostly due to API cleanups and
in driver specific ways rather than due to anything subsystem wide.
Highlights include:
- Standardisation of API prefixes on snd_soc_, removing asoc_.
- GPIO API usage improvements.
- Support for HDA patches.
- Lots of work on SOF, including crash dump support.
- Support for AMD platforms with es83xx, Awinc AT87390, many Intel
platforms, many Mediatek platforms, Qualcomm SM6115, Richtek RTQ9128
and Texas Instruments TAS575x.
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Merge tag 'asoc-v6.7' of https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-next
ASoC: Updates for v6.7
This is quite a large set of changes but mostly due to API cleanups and
in driver specific ways rather than due to anything subsystem wide.
Highlights include:
- Standardisation of API prefixes on snd_soc_, removing asoc_.
- GPIO API usage improvements.
- Support for HDA patches.
- Lots of work on SOF, including crash dump support.
- Support for AMD platforms with es83xx, Awinc AT87390, many Intel
platforms, many Mediatek platforms, Qualcomm SM6115, Richtek RTQ9128
and Texas Instruments TAS575x.
[ the merge conflicts around SOF Intel HD-audio and CS35L41 subcodec
drivers are resolved here -- tiwai ]
When a programming status desc is encountered on the rx_ring,
next_to_process is bumped along with cleaned_count but next_to_clean is
not. This causes I40E_DESC_UNUSED() macro to misbehave resulting in
overwriting whole ring with new buffers.
Update next_to_clean to point to next_to_process on seeing a programming
status desc if not in the middle of handling a multi-frag packet. Also,
bump cleaned_count only for such case as otherwise next_to_clean buffer
may be returned to hardware on reaching clean_threshold.
Fixes: e9031f2da1 ("i40e: introduce next_to_process to i40e_ring")
Suggested-by: Maciej Fijalkowski <maciej.fijalkowski@intel.com>
Reported-by: hq.dev+kernel@msdfc.xyz
Reported by: Solomon Peachy <pizza@shaftnet.org>
Closes: https://bugzilla.kernel.org/show_bug.cgi?id=217678
Tested-by: hq.dev+kernel@msdfc.xyz
Tested by: Indrek Järve <incx@dustbite.net>
Signed-off-by: Tirthendu Sarkar <tirthendu.sarkar@intel.com>
Tested-by: Arpana Arland <arpanax.arland@intel.com> (A Contingent worker at Intel)
Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Acked-by: Maciej Fijalkowski <maciej.fijalkowski@intel.com>
Link: https://lore.kernel.org/r/20231019203852.3663665-1-jacob.e.keller@intel.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
The 'ethtool_convert_link_mode_to_legacy_u32' method does not allow us to
advertise 2500M speed support and TP (twisted pair) properly. Convert to
'ethtool_link_ksettings_test_link_mode' to advertise supported speed and
eliminate ambiguity.
Fixes: 8c5ad0dae9 ("igc: Add ethtool support")
Suggested-by: Dima Ruinskiy <dima.ruinskiy@intel.com>
Suggested-by: Vitaly Lifshits <vitaly.lifshits@intel.com>
Signed-off-by: Sasha Neftin <sasha.neftin@intel.com>
Tested-by: Naama Meir <naamax.meir@linux.intel.com>
Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Link: https://lore.kernel.org/r/20231019203641.3661960-1-jacob.e.keller@intel.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
