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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core
Pull driver core update from Greg KH:
"Here's the set of driver core patches for 3.19-rc1.
They are dominated by the removal of the .owner field in platform
drivers. They touch a lot of files, but they are "simple" changes,
just removing a line in a structure.
Other than that, a few minor driver core and debugfs changes. There
are some ath9k patches coming in through this tree that have been
acked by the wireless maintainers as they relied on the debugfs
changes.
Everything has been in linux-next for a while"
* tag 'driver-core-3.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (324 commits)
Revert "ath: ath9k: use debugfs_create_devm_seqfile() helper for seq_file entries"
fs: debugfs: add forward declaration for struct device type
firmware class: Deletion of an unnecessary check before the function call "vunmap"
firmware loader: fix hung task warning dump
devcoredump: provide a one-way disable function
device: Add dev_<level>_once variants
ath: ath9k: use debugfs_create_devm_seqfile() helper for seq_file entries
ath: use seq_file api for ath9k debugfs files
debugfs: add helper function to create device related seq_file
drivers/base: cacheinfo: remove noisy error boot message
Revert "core: platform: add warning if driver has no owner"
drivers: base: support cpu cache information interface to userspace via sysfs
drivers: base: add cpu_device_create to support per-cpu devices
topology: replace custom attribute macros with standard DEVICE_ATTR*
cpumask: factor out show_cpumap into separate helper function
driver core: Fix unbalanced device reference in drivers_probe
driver core: fix race with userland in device_add()
sysfs/kernfs: make read requests on pre-alloc files use the buffer.
sysfs/kernfs: allow attributes to request write buffer be pre-allocated.
fs: sysfs: return EGBIG on write if offset is larger than file size
...
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Caller (generic PCI code) already do proper locking so no need to add
another one here.
Signed-off-by: Sergey Ryazanov <ryazanov.s.a@gmail.com>
Cc: Linux MIPS <linux-mips@linux-mips.org>
Cc: Gabor Juhos <juhosg@openwrt.org>
Patchwork: https://patchwork.linux-mips.org/patch/7602/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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A platform_driver does not need to set an owner, it will be populated by the
driver core.
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
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Remove unneeded error handling on the result of a call to
platform_get_resource_byname when the value is passed to devm_ioremap_resource.
A simplified version of the semantic patch that makes this change is as
follows: (http://coccinelle.lip6.fr/)
// <smpl>
@@
expression pdev,res,e,e1;
expression ret != 0;
identifier l;
@@
res = platform_get_resource_byname(...);
- if (res == NULL) { ... \(goto l;\|return ret;\) }
e = devm_ioremap_resource(e1, res);
// </smpl>
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Acked-by: Gabor Juhos <juhosg@openwrt.org>
Cc: kernel-janitors@vger.kernel.org
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/5725/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Convert all uses of devm_request_and_ioremap() to the newly introduced
devm_ioremap_resource() which provides more consistent error handling.
Signed-off-by: Silviu-Mihai Popescu <silviupopescu1990@gmail.com>
Patchwork: http://patchwork.linux-mips.org/patch/4986/
Acked-by: John Crispin <blogic@openwrt.org>
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The command register of the PCI controller is
not initialized correctly by the bootloader on
some boards and this leads to non working PCI
bus.
Add code to initialize the command register
from the Linux code to avoid this.
Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Patchwork: http://patchwork.linux-mips.org/patch/4916/
Signed-off-by: John Crispin <blogic@openwrt.org>
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Change to the code to use per-controller IRQ base.
This is needed for multiple PCI controller support.
Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Patchwork: http://patchwork.linux-mips.org/patch/4915/
Signed-off-by: John Crispin <blogic@openwrt.org>
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Static resources become impractical when multiple
PCI controllers are present. Move the resources
into the platform device registration code and
change the probe routine to get those from there
platform device's resources.
Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Patchwork: http://patchwork.linux-mips.org/patch/4914/
Signed-off-by: John Crispin <blogic@openwrt.org>
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The current code uses static variables to store the
PCI controller specific data. This works if the system
contains one PCI controller only, however it becomes
impractical when multiple PCI controllers are present.
Move the variables into a dynamically allocated controller
specific structure, and use that instead of the static
variables.
Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Patchwork: http://patchwork.linux-mips.org/patch/4912/
Signed-off-by: John Crispin <blogic@openwrt.org>
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The functions are unused now, so remove them.
Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Patchwork: http://patchwork.linux-mips.org/patch/4909/
Signed-off-by: John Crispin <blogic@openwrt.org>
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The constants will be used by a subsequent patch.
Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Patchwork: http://patchwork.linux-mips.org/patch/4907/
Signed-off-by: John Crispin <blogic@openwrt.org>
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The patch converts the pci-ar724x driver into a
platform driver. This makes it possible to register
the PCI controller as a plain platform device.
Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Patchwork: http://patchwork.linux-mips.org/patch/4905/
Signed-off-by: John Crispin <blogic@openwrt.org>
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The base address of the PCI memory is
0x10000000 and the base address of the
PCI configuration space is 0x14000000
on the AR724x SoCs.
The AR724X_PCI_MEM_SIZE is defined as
0x08000000 which is wrong because that
overlaps with the configuration space.
The patch fixes the value of the
AR724X_PCI_MEM_SIZE constant, in order
to avoid this resource conflicts.
Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Patchwork: http://patchwork.linux-mips.org/patch/4872/
Signed-off-by: John Crispin <blogic@openwrt.org>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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If the controller has no PCIe module attached, accessing of the device
configuration space causes a data bus error. Avoid this by checking the
status of the PCIe link in advance, and indicate an error if the link
is down.
Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Cc: stable@vger.kernel.org
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/4293/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Add copyright records according to the recent changes in
the PCI code. Also fix up the descriptions.
Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Signed-off-by: Imre Kaloz <kaloz@openwrt.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/3503/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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The PCI Host Controller of the AR724x SoC has a
built-in IRQ controller. The current code does
not supports that, so the IRQ lines wired to this
controller are not usable. This leads to failed
'request_irq' calls:
ath9k 0000:00:00.0: request_irq failed
ath9k: probe of 0000:00:00.0 failed with error -89
This patch adds support for the IRQ controller
in order to make PCI IRQs work.
Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/3496/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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The PCI controller of the AR724X SoCs has a hardware
bag. If the BAR0 register of the PCI device is set to
the proper base address, the memory address space of
the device is not accessible.
When the device driver tries to access the memory
address space of the PCI device, it leads to data
bus error, similiar to this:
Data bus error, epc == 801f69a0, ra == 801f698c
Oops[#1]:
Cpu 0
$ 0 : 00000000 00000061 deadbeef 000000ff
$ 4 : 00000000 000000ff 00000014 00000000
$ 8 : ff000000 fffffffc 00000000 00000000
$12 : 000001f5 00000006 00000000 6e637920
$16 : 81ca4000 81ca0260 81ca4000 804d70f0
$20 : fffffff4 0000002b 803ad4c4 00000000
$24 : 00000003 00000000
$28 : 81c20000 81c21c60 00000000 801f698c
Hi : 00000000
Lo : 00000000
epc : 801f69a0 ath9k_hw_init+0xd0/0xa70
Not tainted
ra : 801f698c ath9k_hw_init+0xbc/0xa70
Status: 1000c103 KERNEL EXL IE
Cause : 1080001c
PrId : 00019374 (MIPS 24Kc)
Modules linked in:
Process swapper (pid: 1, threadinfo=81c20000, task=81c18000, tls=00000000)
Stack : 00000000 00000000 00000000 00000000 81c21c78 81ca0260 00000000 804d70f0
81ca0260 81c21cc0 81ca0e80 81ca0260 81ca4000 804d70f0 fffffff4 0000002b
803ad4c4 00000000 00000000 801e3ae8 81c9d080 81ca0e80 b0000000 800b9b9c
00000008 81c9d000 8031aeb0 802d38a0 00000000 81c14c00 81c14c60 00000000
81ca0e80 81ca0260 b0000000 801f08a4 81c9c820 81c21d48 81c9c820 80144320
...
Call Trace:
[<801f69a0>] ath9k_hw_init+0xd0/0xa70
[<801e3ae8>] ath9k_init_device+0x174/0x680
[<801f08a4>] ath_pci_probe+0x27c/0x380
[<8019e490>] pci_device_probe+0x74/0x9c
[<801bfadc>] driver_probe_device+0x9c/0x1b4
[<801bfcb0>] __driver_attach+0xbc/0xc4
[<801bea0c>] bus_for_each_dev+0x5c/0x98
[<801bf394>] bus_add_driver+0x1d0/0x2a4
[<801c0364>] driver_register+0x8c/0x16c
[<8019e72c>] __pci_register_driver+0x4c/0xe4
[<803d3d40>] ath9k_init+0x3c/0x88
[<80060930>] do_one_initcall+0x3c/0x1cc
[<803c297c>] kernel_init+0xa4/0x138
[<80063c04>] kernel_thread_helper+0x10/0x18
Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/3494/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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The current ar724x_pci_{read,write} functions are
broken. Due to that, pci_read_config_byte returns
with bogus values, and pci_write_config_{byte,word}
unconditionally clears the accessed PCI configuration
registers instead of changing the value of them.
The patch fixes the broken functions, thus the PCI
configuration space can be accessed correctly.
Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/3493/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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The alignment of the 'where' parameters are checked
in the core PCI code already.
Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/3492/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Acked-by: René Bolldorf <xsecute@googlemail.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/3491/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Replace the 'ath724x' to 'ar724x' in function, variable and
structure names to reflect the name of the real SoC.
Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Acked-by: René Bolldorf <xsecute@googlemail.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/3490/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Acked-by: René Bolldorf <xsecute@googlemail.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/3489/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Linus Torvalds
Sergey Ryazanov
Wolfram Sang
Julia Lawall
Silviu-Mihai Popescu
Gabor Juhos
