- 02 Sep, 2016 3 commits
-
-
Vitaly Kuznetsov authored
With wrap around mappings for ring buffers we can always use a single memcpy() to do the job. Signed-off-by:
Vitaly Kuznetsov <vkuznets@redhat.com> Signed-off-by:
K. Y. Srinivasan <kys@microsoft.com> Tested-by:
Dexuan Cui <decui@microsoft.com> Signed-off-by:
Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-
Vitaly Kuznetsov authored
Make it possible to always use a single memcpy() or to provide a direct link to a packet on the ring buffer by creating virtual mapping for two copies of the ring buffer with vmap(). Utilize currently empty hv_ringbuffer_cleanup() to do the unmap. While on it, replace sizeof(struct hv_ring_buffer) check in hv_ringbuffer_init() with BUILD_BUG_ON() as it is a compile time check. Signed-off-by:
-
Vitaly Kuznetsov authored
In preparation for doing wrap around mappings for ring buffers cleanup vmbus_open() function: - check that ring sizes are PAGE_SIZE aligned (they are for all in-kernel drivers now); - kfree(open_info) on error only after we kzalloc() it (not an issue as it is valid to call kfree(NULL); - rename poorly named labels; - use alloc_pages() instead of __get_free_pages() as we need struct page pointer for future. Signed-off-by:
-
- 31 Aug, 2016 37 commits
-
-
Zubair Lutfullah Kakakhel authored
The MIPS based Boston platform provides a 25MHz clock to the UART. Enable the driver for MIPS and add support in the driver to read the frequency from device tree. Signed-off-by:
Zubair Lutfullah Kakakhel <Zubair.Kakakhel@imgtec.com> Signed-off-by:
-
Zubair Lutfullah Kakakhel authored
The EG20T has 4 UART blocks. The clock source for the UART block is configured to receive a clock from an external pin by default. An internal 25MHz clock in the EG20T can also be used as a clock source for the clock. The MIPS based Boston platform ties the external clock pin down and relies on the internal clock source for the UART to function. Boston is based on device tree. Add a quirk to allow Boston to be detected via device tree and set the correct clock source for UART. Signed-off-by:
-
Zubair Lutfullah Kakakhel authored
The default prefetch value for the eg20t device is hard coded to 0x000affaa. Add support for an alternative to be read from DT if available Signed-off-by:
-
Baoyou Xie authored
We get 2 warnings when biuld kernel with W=1: drivers/memory/of_memory.c:30:30: warning: no previous prototype for 'of_get_min_tck' [-Wmissing-prototypes] drivers/memory/of_memory.c:106:30: warning: no previous prototype for 'of_get_ddr_timings' [-Wmissing-prototypes] In fact, these functions are declared in drivers/memory/of_memory.h so this patch add missing header dependencies. Signed-off-by:
Baoyou Xie <baoyou.xie@linaro.org> Signed-off-by:
-
Robin Murphy authored
Arriving at read_kmem() with an offset representing a bogus kernel address (e.g. 0 from a simple "cat /dev/kmem") leads to copy_to_user faulting on the kernel-side read. x86_64 happens to get away with this since the optimised implementation uses "rep movs*", thus the user write (which is allowed to fault) and the kernel read are the same instruction, the kernel-side fault falls into the user-side fixup handler and the chain of events which transpires ends up returning an error as one might expect, even if it's an inappropriate -EFAULT. On other architectures, though, the read is not covered by the fixup entry for the write, and we get a big scary "Unable to hande kernel paging request..." dump. The more typical use-case of mmap_kmem() has always (within living memory at least) returned -EIO for addresses which don't satisfy pfn_valid(), so let's make that consistent across {read,write}_kem() too. Reported-by:Kefeng Wang <wangkefeng.wang@huawei.com> Signed-off-by:
Robin Murphy <robin.murphy@arm.com> Signed-off-by:
-
Eli Billauer authored
This patch fixes two minor issues: (1) An inaccurate comment (2) A spelling mistake in dev_err message ("upgarde" -> "upgrade") Reported-by:Joe Perches <joe@perches.com> Reported-by:
Colin Ian King <colin.king@canonical.com> Signed-off-by:
Eli Billauer <eli.billauer@gmail.com> Signed-off-by:
-
Zhouyi Zhou authored
return value of class_create should be considered in module init function. Signed-off-by:
Zhouyi Zhou <zhouzhouyi@gmail.com> Signed-off-by:
-
Arnd Bergmann authored
The mwave driver has its own macros for the BOOLEAN type and the TRUE/FALSE values. This is redundant because the kernel already has bool/true/false, and it clashes with the ACPI headers that also define these types. The linux/acpi.h header is now included implicitly from mwave through the mc146818rtc.h header, as reported by Stephen Rothwell: In file included from drivers/char/mwave/smapi.c:51:0: drivers/char/mwave/smapi.h:52:0: warning: "TRUE" redefined #define TRUE 1 ^ In file included from include/acpi/acpi.h:58:0, from include/linux/acpi.h:33, from include/linux/mc146818rtc.h:21, from drivers/char/mwave/smapi.c:50: include/acpi/actypes.h:438:0: note: this is the location of the previous definition #define TRUE (1 == 1) ^ This removes the private types from mwave and uses the standard types instead. Signed-off-by:Arnd Bergmann <arnd@arndb.de> Reviewed-by:
Alexandre Belloni <alexandre.belloni@free-electrons.com> Fixes: fd09cc80165c ("rtc: cmos: move mc146818rtc code out of asm-generic/rtc.h") Signed-off-by:
-
Sudip Mukherjee authored
Modify ppdev driver to use the new parallel port device model. Initially submitted and committed as: e7223f18 ("ppdev: use new parport device model") But due to some regression it was reverted by: 1701f680 ("Revert "ppdev: use new parport device model"") Now that the original source of regression is fixed by: bbca503b ("parport: use subsys_initcall") we can again modify ppdev to use device model. Signed-off-by:
Sudip Mukherjee <sudip.mukherjee@codethink.co.uk> Signed-off-by:
-
Frank Haverkamp authored
Since it should always be ok for normal users to operate the accelerator, it makes sense to change it in our driver, rather than adding udev rules for all Linux distributions. Signed-off-by:
Frank Haverkamp <haver@linux.vnet.ibm.com> Reviewed-by:
Gabriel Krisman Bertazi <krisman@linux.vnet.ibm.com> Signed-off-by:
-
PrasannaKumar Muralidharan authored
This patch removes module_init()/module_exit() from driver code by using module_misc_device() macro. All modules in this patch has a print statement which is removed when module_misc_device() macro is used. If undesirable this patch can be dropped entirely, this is the only purpose of making this as a separate patch. Signed-off-by:
PrasannaKumar Muralidharan <prasannatsmkumar@gmail.com> Signed-off-by:
-
PrasannaKumar Muralidharan authored
Many modules call misc_register and misc_deregister in its module init and exit methods without any additional code. This ends up being boilerplate. This patch adds helper macro module_misc_device(), that replaces module_init()/ module_exit() with template functions. This patch also converts drivers to use new macro. Change since v1: Add device.h include in miscdevice.h as module_driver macro was not available from other include files in some architectures. Signed-off-by:
-
Linus Walleij authored
Patches merged to the IIO BMP085 driver makes it fully compliant with all features found in this old misc driver. Retire this old driver in favor of the new one in the proper subsystem. Cc: Jonathan Cameron <jic23@cam.ac.uk> Cc: Marek Belisko <marek@goldelico.com> Acked-by:
H. Nikolaus Schaller <hns@goldelico.com> Signed-off-by:
Linus Walleij <linus.walleij@linaro.org> Acked-by:
-
Alexander Kapshuk authored
ver_linux.awk renamed to ver_linux. Signed-off-by:
Alexander Kapshuk <alexander.kapshuk@gmail.com> Signed-off-by:
-
Alexander Kapshuk authored
The shell implementation removed. To be replaced with an all-awk implementation via consecutive patch. Signed-off-by:
-
Alexander Kapshuk authored
The algorithm that extracts the version number of the utility being queried, and prints the name of the utility and its version number is currently implemented in awk. The code is used throughout the script, making its use repetative. The proposed implementation confines the algorithm in question to a function, which makes the script easier to read overall, as well as considerably reduces the number of lines of code. Every attempt has been made to retain the look and the format generated by the current implementation. Signed-off-by:
-
Wei Yongjun authored
Fix 'timeout_us' parameter description. Signed-off-by:
Wei Yongjun <weiyj.lk@gmail.com> Signed-off-by:
-
Ben Werbowyj authored
Correct pointer notations to include whitespace between variable type and "*" character. Inserted blank line after variable declatations at two locations. Rearranged comparison within an if statment to have the constant on the right-hand side. Signed-off-by:
Ben Werbowyj <ben.werbowyj@gmail.com> Acked-by:
Evgeniy Polyakov <zbr@ioremap.net> Signed-off-by:
-
Ben Werbowyj authored
Assignment of variable count removed from within an if statment. This was done at two locations in the file. Signed-off-by:
-
Ben Werbowyj authored
Inserted whitespace between command and open parenthesis at two locations. Removed new line between open brace and command/declaration at two locations. Signed-off-by:
-
Benedikt Spranger authored
We had to say goodbye when Hans passed away recently. Hans was a free-software enthusiast and an active contributor. He was the main author and maintainer of the UIO subsystem and contributed in various ways to the Linux kernel as a professional and hobbyist. He is greatly missed. Signed-off-by:
Benedikt Spranger <b.spranger@linutronix.de> Signed-off-by:
-
Martyn Welch authored
This patch introduces a fake VME bridge driver. This driver currently emulates a subset of the VME bridge functionality. This allows some VME subsystem development and even some VME device driver development to be carried out in the absence of a proper VME bus. Signed-off-by:
Martyn Welch <martyn@welchs.me.uk> Signed-off-by:
-
Paul Gortmaker authored
The Kconfig currently controlling compilation of this code is: drivers/vme/Kconfig:menuconfig VME_BUS drivers/vme/Kconfig: bool "VME bridge support" ...meaning that it currently is not being built as a module by anyone. Lets remove the modular code that is essentially orphaned, so that when reading the driver there is no doubt it is builtin-only. We replace module.h and moduleparam.h (unused) with init.h and also export.h ; the latter since this file does export some syms. Since this is a struct bus_type and not a platform_driver, we don't have any ".suppress_bind_attrs" to be concerned about when we drop the ".remove" code from this file. Since module_init was not in use by this code, the init ordering remains unchanged with this commit. Cc: Manohar Vanga <manohar.vanga@gmail.com> Signed-off-by:
Paul Gortmaker <paul.gortmaker@windriver.com> Acked-by:
-
Alessio Igor Bogani authored
These drivers have a PCI device ID table but the PCI module alias information is not created so module autoloading won't work. Signed-off-by:
Alessio Igor Bogani <alessio.bogani@elettra.eu> Acked-by:
-
Martyn Welch authored
The vme_register_driver() api changed in commit 5d6abf37 ("staging: vme: make match() driver specific to improve non-VME64x support") but the documentation wasn't updated. Update the documentation to match the API. Signed-off-by:
-
Aaron Sierra authored
Make the location monitor callback function prototype more useful by changing the argument from an integer to a void pointer. All VME bridge drivers were simply passing the location monitor index (e.g. 0-3) as the argument to these callbacks. It is much more useful to pass back a pointer to data that the callback-registering driver cares about. There appear to be no in-kernel callers of vme_lm_attach (or vme_lme_request for that matter), so this change only affects the VME subsystem and bridge drivers. This has been tested with Tsi148 hardware, but the CA91Cx42 changes have only been compiled. Signed-off-by:
Aaron Sierra <asierra@xes-inc.com> Acked-by:
-
Muhammad Falak R Wani authored
Use memdup_user to duplicate a memory region from user-space to kernel-space, instead of open coding using kmalloc & copy_from_user. Signed-off-by:
Muhammad Falak R Wani <falakreyaz@gmail.com> Signed-off-by:
-
Johannes Thumshirn authored
The MEN Chameleon specification states that a chameleon FPGA can include a bridge descriptor, which then opens up a new bus behind this bridge. MCB included subdevice handling code in the core, but no support for bus descriptors in the parser, due to a lack of hardware access. As this is technically dead code, but it gets executed on a device add, I've decided to remove it. Signed-off-by:
Johannes Thumshirn <jthumshirn@suse.de> Signed-off-by:
-
Johannes Thumshirn authored
The to_mcb_{bus,device,driver}() macros lacked type safety, so convert them to inline functions to enforce compile time type checking. Signed-off-by: -
Andreas Werner authored
Added support for the bar descriptor. This type is used for FPGAs connect to the LPC or to a non PCI bus. The Bar descriptor could have a maximum of 6 BARs. Each of the devices within the FPGA could be mapped to a different BAR. The BAR descriptor is comparable to the PCI header. Signed-off-by:
Andreas Werner <andreas.werner@men.de> [ free bar descriptor in the non-error case ] Signed-off-by:
-
Andreas Werner authored
Add support for MCB bases FPGAs connected to the LPC or non PCI Bus. This driver currently supports the SC24 board. The FPGA is connected to the LPC bus and is identified using the BIOS DMI string. Signed-off-by:
-
Jan Viktorin authored
The variable i contains a total number of resources (including IORESOURCE_IRQ). However, we want the dmem_region_start to point after the last resource of type IORESOURCE_MEM. The original behaviour leads (very likely) to skipping several UIO mapping regions and makes them useless. Fix this by computing dmem_region_start from the uiomem which points to the last used UIO mapping. Fixes: 0a0c3b5a ("Add new uio device for dynamic memory allocation") Signed-off-by:
Jan Viktorin <viktorin@rehivetech.com> Signed-off-by:
-
Mathieu Poirier authored
With this patch we add start/stop filtering as specified on the perf cmd line. When the IP matches the start address trace generation gets triggered. The stop condition is achieved when the IP matches the stop address. Signed-off-by:
Mathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by:
-
Mathieu Poirier authored
This patch adds the capability to specify address ranges from the perf cmd line using the --filter option. If the IP falls within the range(s) program flow traces are generated. Signed-off-by:
-
Mathieu Poirier authored
The include/exclude function of a tracer is applicable to address range and start/stop filters. To avoid duplication and reuse code moving the include/exclude configuration to a function of its own. Signed-off-by:
-
Mathieu Poirier authored
Introducing a new function to do address range configuration generic enough to work for any address range and any comparator. Signed-off-by:
-
Mathieu Poirier authored
The default filter configuration was hard to read and included some redundancy. This patch attempts to stream line configuration and improve readability. No change of functionality is included. Signed-off-by:
-
