04 Sep, 2013
1 commit
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Pull driver core patches from Greg KH:
"Here's the big driver core pull request for 3.12-rc1.Lots of tiny changes here fixing up the way sysfs attributes are
created, to try to make drivers simpler, and fix a whole class race
conditions with creations of device attributes after the device was
announced to userspace.All the various pieces are acked by the different subsystem
maintainers"* tag 'driver-core-3.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (119 commits)
firmware loader: fix pending_fw_head list corruption
drivers/base/memory.c: introduce help macro to_memory_block
dynamic debug: line queries failing due to uninitialized local variable
sysfs: sysfs_create_groups returns a value.
debugfs: provide debugfs_create_x64() when disabled
rbd: convert bus code to use bus_groups
firmware: dcdbas: use binary attribute groups
sysfs: add sysfs_create/remove_groups for when SYSFS is not enabled
driver core: add #include to core files.
HID: convert bus code to use dev_groups
Input: serio: convert bus code to use drv_groups
Input: gameport: convert bus code to use drv_groups
driver core: firmware: use __ATTR_RW()
driver core: core: use DEVICE_ATTR_RO
driver core: bus: use DRIVER_ATTR_WO()
driver core: create write-only attribute macros for devices and drivers
sysfs: create __ATTR_WO()
driver-core: platform: convert bus code to use dev_groups
workqueue: convert bus code to use dev_groups
MEI: convert bus code to use dev_groups
...
31 Aug, 2013
5 commits
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The User space I/O drivers are useful, only when user space meaningful
(MMU must be enabled).So need let it depend on MMU, or can not pass compiling, the related
error (allmodconfig for H8300):CC [M] drivers/uio/uio.o
drivers/uio/uio.c: In function 'uio_mmap_physical':
drivers/uio/uio.c:650:2: error: implicit declaration of function 'pgprot_noncached' [-Werror=implicit-function-declaration]
drivers/uio/uio.c:650:20: error: incompatible types when assigning to type 'pgprot_t' from type 'int'Signed-off-by: Chen Gang
Signed-off-by: Greg Kroah-Hartman -
Signed-off-by: Rostislav Lisovy
Signed-off-by: Greg Kroah-Hartman -
Use the wrapper function for retrieving the platform data instead of
accessing dev->platform_data directly. This is a cosmetic change
to make the code simpler and enhance the readability.Signed-off-by: Jingoo Han
Signed-off-by: Greg Kroah-Hartman -
Use the wrapper function for retrieving the platform data instead of
accessing dev->platform_data directly. This is a cosmetic change
to make the code simpler and enhance the readability.Signed-off-by: Jingoo Han
Signed-off-by: Greg Kroah-Hartman -
Use the wrapper function for retrieving the platform data instead of
accessing dev->platform_data directly. This is a cosmetic change
to make the code simpler and enhance the readability.Signed-off-by: Jingoo Han
Signed-off-by: Greg Kroah-Hartman
28 Aug, 2013
1 commit
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The driver core clears the driver data to NULL after device_release
or on probe failure. Thus, it is not needed to manually clear the
device driver data to NULL.Signed-off-by: Jingoo Han
Signed-off-by: Greg Kroah-Hartman
13 Aug, 2013
2 commits
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vma_count is used write-only and so fails to be useful. So remove it.
Signed-off-by: Uwe Kleine-König
Signed-off-by: Greg Kroah-Hartman -
This makes it possible to let gdb access mappings of the process that is
being debugged.uio_mmap_logical was moved and uio_vm_ops renamed to group related code
and differentiate to new stuff.Signed-off-by: Uwe Kleine-König
Signed-off-by: Greg Kroah-Hartman
27 Jul, 2013
1 commit
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The patch "UIO: fix uio_pdrv_genirq with device tree but no interrupt"
(sha1: e3a3c3a205554e564751cd9c0276b2af813d7a92)
add support to use this driver with no interrupts.
uio_pdrv_genirq also supports device-tree binding
which is not available in uio_pdrv.That's why this uio_pdrv driver can be just removed.
Signed-off-by: Michal Simek
Reviewed-by: Vitalii Demianets
Reviewed-by: Pavel Machek
Signed-off-by: Greg Kroah-Hartman
25 Jul, 2013
1 commit
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The dev_attrs field of struct class is going away soon, dev_groups
should be used instead. This converts the uio class code to use the
correct field.Cc: Hans J. Koch
Signed-off-by: Greg Kroah-Hartman
04 Jul, 2013
1 commit
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(*->vm_end - *->vm_start) >> PAGE_SHIFT operation is implemented
as a inline funcion vma_pages() in linux/mm.h, so using it.Signed-off-by: Libin
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
26 Jun, 2013
1 commit
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This eliminates having an #ifdef returning NULL for the case
when OF is disabled.Signed-off-by: Sachin Kamat
Signed-off-by: Greg Kroah-Hartman
25 Jun, 2013
2 commits
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In a SMP case there was a race condition issue between
uio_pdrv_genirq_irqcontrol() running on one CPU and irq handler on
another CPU. Fix it by spin_locking shared resources access inside irq
handler. Also:
- Change disable_irq to disable_irq_nosync to avoid deadlock, because
disable_irq waits for the completion of the irq handler;
- Change atomic bit-manipulation routines to their non-atomic
counterparts as we already are guarding the code by spinlock.Signed-off-by: Vitalii Demianets
Reviewed-by: Pavel Machek
Signed-off-by: Greg Kroah-Hartman -
This eliminates having an #ifdef returning NULL for the case
when OF is disabled.Signed-off-by: Sachin Kamat
Acked-by: Damian Hobson-Garcia
Signed-off-by: Greg Kroah-Hartman
19 Jun, 2013
2 commits
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If device is initialized from device tree, but has no interrupt
assigned, uio will still try to request and interrupt old way,
fails, and fails registration.This is wrong; don't try initializing irq using platform data if
device tree is available.Simplified code based on suggestion by Grant Likely.
Fixed memory leak in "irq can not be registered" error path.
Signed-off-by: Pavel Machek
Reported-by: Detlev Zundel
Signed-off-by: Greg Kroah-Hartman -
This adds ability to bind uio driver to given open firmware device
using command line option. Thus, userspace driver can be developed and
used without modifying the kernel.Signed-off-by: Pavel Machek
Tested-by: Detlev Zundel
Signed-off-by: Greg Kroah-Hartman
07 Jun, 2013
1 commit
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In function pruss_probe we free gdev and try to use
it on the next line. I have moved the dereference to
above the kfree of gdev.Signed-off-by: Emil Goode
Signed-off-by: Greg Kroah-Hartman
27 May, 2013
1 commit
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We want the changes in here.
Signed-off-by: Greg Kroah-Hartman
22 May, 2013
6 commits
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Removing some boilerplate by using module_pci_driver instead of calling
register and unregister in the otherwise empty init/exit functions.It removes a pr_info showing some details about the driver, but
these infos can also be retrieved by using modinfo.The name of the pci_driver struct had to be changed in order to prevent a
build failure.Signed-off-by: Peter Huewe
Signed-off-by: Greg Kroah-Hartman -
If NO_DMA=y:
drivers/built-in.o: In function `uio_dmem_genirq_release':
drivers/uio/uio_dmem_genirq.c:95: undefined reference to `dma_free_coherent'
drivers/built-in.o: In function `uio_dmem_genirq_open':
drivers/uio/uio_dmem_genirq.c:61: undefined reference to `dma_alloc_coherent'Signed-off-by: Geert Uytterhoeven
Cc: Hans J. Koch
Cc: Greg Kroah-Hartman
Signed-off-by: Greg Kroah-Hartman -
Removing some boilerplate by using module_pci_driver instead of calling
register and unregister in the otherwise empty init/exit functions.Signed-off-by: Peter Huewe
Signed-off-by: Greg Kroah-Hartman -
Removing some boilerplate by using module_pci_driver instead of calling
register and unregister in the otherwise empty init/exit functions.Signed-off-by: Peter Huewe
Signed-off-by: Greg Kroah-Hartman -
Removing some boilerplate by using module_pci_driver instead of calling
register and unregister in the otherwise empty init/exit functions.Signed-off-by: Peter Huewe
Signed-off-by: Greg Kroah-Hartman -
Removing some boilerplate by using module_pci_driver instead of calling
register and unregister in the otherwise empty init/exit functions.Signed-off-by: Peter Huewe
Signed-off-by: Greg Kroah-Hartman
30 Mar, 2013
1 commit
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Until recently uio_get_minor() returned 0 for success and
a negative value on failure. This became non-negative for suceess and
negative for failure. Restore the original return value spec so that we can
successfully initialize UIO devices with a non-zero minor device
number.Cc: "Hans J. Koch"
Signed-off-by: Damian Hobson-Garcia
Signed-off-by: Greg Kroah-Hartman
28 Feb, 2013
1 commit
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Convert to the much saner new idr interface.
Signed-off-by: Tejun Heo
Acked-by: Greg Kroah-Hartman
Cc: "Hans J. Koch"
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
14 Feb, 2013
1 commit
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Signed-off-by: Heiko Carstens
Signed-off-by: Martin Schwidefsky
13 Dec, 2012
1 commit
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Pull ARM SoC updates from Olof Johansson:
"This contains the bulk of new SoC development for this merge window.Two new platforms have been added, the sunxi platforms (Allwinner A1x
SoCs) by Maxime Ripard, and a generic Broadcom platform for a new
series of ARMv7 platforms from them, where the hope is that we can
keep the platform code generic enough to have them all share one mach
directory. The new Broadcom platform is contributed by Christian
Daudt.Highbank has grown support for Calxeda's next generation of hardware,
ECX-2000.clps711x has seen a lot of cleanup from Alexander Shiyan, and he's
also taken on maintainership of the platform.Beyond this there has been a bunch of work from a number of people on
converting more platforms to IRQ domains, pinctrl conversion, cleanup
and general feature enablement across most of the active platforms."Fix up trivial conflicts as per Olof.
* tag 'soc' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (174 commits)
mfd: vexpress-sysreg: Remove LEDs code
irqchip: irq-sunxi: Add terminating entry for sunxi_irq_dt_ids
clocksource: sunxi_timer: Add terminating entry for sunxi_timer_dt_ids
irq: versatile: delete dangling variable
ARM: sunxi: add missing include for mdelay()
ARM: EXYNOS: Avoid early use of of_machine_is_compatible()
ARM: dts: add node for PL330 MDMA1 controller for exynos4
ARM: EXYNOS: Add support for secondary CPU bring-up on Exynos4412
ARM: EXYNOS: add UART3 to DEBUG_LL ports
ARM: S3C24XX: Add clkdev entry for camif-upll clock
ARM: SAMSUNG: Add s3c24xx/s3c64xx CAMIF GPIO setup helpers
ARM: sunxi: Add missing sun4i.dtsi file
pinctrl: samsung: Do not initialise statics to 0
ARM i.MX6: remove gate_mask from pllv3
ARM i.MX6: Fix ethernet PLL clocks
ARM i.MX6: rename PLLs according to datasheet
ARM i.MX6: Add pwm support
ARM i.MX51: Add pwm support
ARM i.MX53: Add pwm support
ARM: mx5: Replace clk_register_clkdev with clock DT lookup
...
22 Nov, 2012
8 commits
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The same condition should be used both when allocating and freeing the
driver private data. When dev.of_node is non NULL, allocate a new
private data structure, otherwise use the values from the platform data.Reported-by: Fengguang Wu
Signed-off-by: Damian Hobson-Garcia
Cc: "Hans J. Koch"
Signed-off-by: Greg Kroah-Hartman -
The uio device should not fail on open just because one memory allocation
fails. The device might export several regions, the failure of some of
which may or may not be a problem for the user space driver. Failing
regions will remain unmapped, and successful regions will be mapped and
exported to user space. Also deals with the case where failing to map
a region after successfully allocating others would not unmap the
successfully allocated regions before dying.Signed-off-by: Damian Hobson-Garcia
Cc: "Hans J. Koch"
Signed-off-by: Greg Kroah-Hartman -
DMA_ERROR_CODE is not defined on all architectures and is architecture
specific. Instead, use the constant, ~0 to indicate unmapped regions.Reported-by: Fengguang Wu
Reported-by: Geert Uytterhoeven
Signed-off-by: Damian Hobson-Garcia
Cc: "Hans J. Koch"
Signed-off-by: Greg Kroah-Hartman -
Assigning the virtual address returned from dma_alloc_coherent to the the
internal_addr element of uioinfo produces the following sparse errors since
internal_addr is a void __iomem * and dma_alloc_coherent returns void *.+ drivers/uio/uio_dmem_genirq.c:65:39: sparse: incorrect type in assignment (different address spaces)
drivers/uio/uio_dmem_genirq.c:65:39: expected void [noderef] *internal_addr
drivers/uio/uio_dmem_genirq.c:65:39: got void *[assigned] addr
+ drivers/uio/uio_dmem_genirq.c:93:17: sparse: incorrect type in argument 3 (different address spaces)
drivers/uio/uio_dmem_genirq.c:93:17: expected void *vaddr
drivers/uio/uio_dmem_genirq.c:93:17: got void [noderef] *internal_addrStore the void * in the driver's private data instead.
Reported-by: Fengguang Wu
Signed-off-by: Damian Hobson-Garcia
Cc: "Hans J. Koch"
Signed-off-by: Greg Kroah-Hartman -
CONFIG_HOTPLUG is going away as an option so __devexit is no
longer needed.Signed-off-by: Bill Pemberton
Cc: "Hans J. Koch"
Signed-off-by: Greg Kroah-Hartman -
CONFIG_HOTPLUG is going away as an option so __devinitdata is no
longer needed.Signed-off-by: Bill Pemberton
Cc: "Hans J. Koch"
Signed-off-by: Greg Kroah-Hartman -
CONFIG_HOTPLUG is going away as an option so __devinit is no longer
needed.Signed-off-by: Bill Pemberton
Cc: "Hans J. Koch"
Signed-off-by: Greg Kroah-Hartman -
CONFIG_HOTPLUG is going away as an option so __devexit_p is no longer
needed.Signed-off-by: Bill Pemberton
Cc: "Hans J. Koch"
Signed-off-by: Greg Kroah-Hartman
16 Nov, 2012
1 commit
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If uio_pdrv[_genirq] is used, the uio maps have currently no name set.
This patch sets the uio_mem name to the name of the memory resource.Signed-off-by: Manuel Traut
Reported-by: Stefan Staedtler
Tested-by: Stefan Staedtler
Signed-off-by: "Hans J. Koch"
Signed-off-by: Greg Kroah-Hartman
27 Oct, 2012
1 commit
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Remove the use of the private DaVinci SRAM API in favor
of genalloc. The pool to be used is provided by platform
data.Signed-off-by: Matt Porter
Signed-off-by: "Hans J. Koch"
Signed-off-by: Sekhar Nori
25 Oct, 2012
1 commit
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This device extends the uio_pdrv_genirq driver to provide limited
dynamic memory allocation for UIO devices. This allows UIO devices
to use CMA and IOMMU allocated memory regions. This driver is based
on the uio_pdrv_genirq driver and provides the same generic interrupt
handling capabilities. Like uio_prdv_genirq,
a fixed number of memory regions, defined in the platform device's
.resources field are exported to userpace. This driver adds the ability
to export additional regions whose number and size are known at boot time,
but whose memory is not allocated until the uio device file is opened for
the first time. When the device file is closed, the allocated memory block
is freed. Physical (DMA) addresses for the dynamic regions are provided to
the userspace via /sys/class/uio/uioX/maps/mapY/addr in the same way as
static addresses are when the uio device file is open, when no processes
are holding the device file open, the address returned to userspace is
DMA_ERROR_CODE.Signed-off-by: Damian Hobson-Garcia
Signed-off-by: "Hans J. Koch"
Signed-off-by: Greg Kroah-Hartman