linux-toradex.git/drivers/bcma, branch v4.17

bcma: fix buffer size caused crash in bcma_core_mips_print_irq()

2018-05-12T08:36:59+00:00

Used buffer wasn't big enough to hold whole strings. Example output of
this function is:
[    0.180892] bcma: bus0: core 0x0800, irq: 2(S)* 3  4  5  6  D  I
[    0.180948] bcma: bus0: core 0x0812, irq: 2(S)  3* 4  5  6  D  I
[    0.180998] bcma: bus0: core 0x082d, irq: 2(S)  3  4* 5  6  D  I
[    0.181046] bcma: bus0: core 0x082c, irq: 2(S)  3  4  5  6  D  I*
which means we need to store up to 24 chars.

Fixes: 758f7e06063a8 ("bcma: Use bcma_debug and not pr_cont in MIPS driver")
Signed-off-by: Rafał Miłecki 
Cc: stable@vger.kernel.org # v4.15+
Signed-off-by: Kalle Valo

bcma: Prevent build of PCI host features in module

2018-03-13T16:47:47+00:00

Attempting to build bcma.ko with BCMA_DRIVER_PCI_HOSTMODE=y results in
a build error due to use of symbols not exported from vmlinux:

ERROR: "pcibios_enable_device" [drivers/bcma/bcma.ko] undefined!
ERROR: "register_pci_controller" [drivers/bcma/bcma.ko] undefined!
make[1]: *** [scripts/Makefile.modpost:92: __modpost] Error 1

To prevent this, don't allow the host mode feature to be built if
CONFIG_BCMA=m

Signed-off-by: Matt Redfearn 
Signed-off-by: Kalle Valo

bcma: add HP Stream Notebook

2018-02-28T14:37:22+00:00

In this laptop we have the following PCI device:
02:00.0 Network controller [0280]: Broadcom Limited BCM43142 802.11b/g/n [14e4:4365] (rev 01)
	Subsystem: Hewlett-Packard Company BCM43142 802.11b/g/n [103c:804a]
	[...]
	Region 0: Memory at 91000000 (64-bit, non-prefetchable) [size=32K]
	[...]

With this patch, we can now see its WiFi chip:
  bcma: bus0: Found chip with id 43142, rev 0x01 and package 0x08
  bcma: bus0: Core 0 found: ChipCommon (manuf 0x4BF, id 0x800, rev 0x28, class 0x0)
  bcma: bus0: Core 1 found: IEEE 802.11 (manuf 0x4BF, id 0x812, rev 0x21, class 0x0)
  bcma: bus0: Core 2 found: PCIe (manuf 0x4BF, id 0x820, rev 0x16, class 0x0)
  bcma: bus0: Core 3 found: UNKNOWN (manuf 0x43B, id 0x368, rev 0x00, class 0x0)
  bcma: bus0: Found rev 15 PMU (capabilities 0x518C5E0F)
  bcma: bus0: SPROM offset 0x840
  bcma: bus0: Found SPROM revision 10
  bcma: bus0: Workarounds unknown or not needed for device 0xA886
  bcma: bus0: Bus registered

But it not yet supported by brcmsmac so it won't work for now:
  brcmsmac bcma0:1: brcms_b_attach wl0: vendor 0x14e4 device 0x4365
  brcmsmac: unknown device id 4365

Signed-off-by: Denis 'GNUtoo' Carikli 
Signed-off-by: Kalle Valo

bcma: Replace mdelay with usleep_range in bcma_pmu_resources_init

2018-02-27T13:52:13+00:00

After checking all possible call chains to bcma_pmu_resources_init() here,
my tool finds that this function is never called in atomic context,
namely never in an interrupt handler or holding a spinlock.
Thus mdelay can be replaced with usleep_range to avoid busy wait.

This is found by a static analysis tool named DCNS written by myself.

Signed-off-by: Jia-Ju Bai 
Acked-by: Larry Finger 
Signed-off-by: Kalle Valo

Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net

2018-01-20T03:59:33+00:00

The BPF verifier conflict was some minor contextual issue.

The TUN conflict was less trivial.  Cong Wang fixed a memory leak of
tfile->tx_array in 'net'.  This is an skb_array.  But meanwhile in
net-next tun changed tfile->tx_arry into tfile->tx_ring which is a
ptr_ring.

Signed-off-by: David S. Miller

bcma: Fix 'allmodconfig' and BCMA builds on MIPS targets

2018-01-16T19:13:55+00:00

Mips builds with BCMA host mode enabled fail in mainline and -next
with:

In file included from include/linux/bcma/bcma.h:10:0,
                 from drivers/bcma/bcma_private.h:9,
		 from drivers/bcma/main.c:8:
include/linux/bcma/bcma_driver_pci.h:218:24: error:
	field 'pci_controller' has incomplete type

Bisect points to commit d41e6858ba58c ("MIPS: Kconfig: Set default MIPS
system type as generic") as the culprit. Analysis shows that the commmit
changes PCI configuration and enables PCI_DRIVERS_GENERIC. This in turn
disables PCI_DRIVERS_LEGACY. 'struct pci_controller' is, however, only
defined if PCI_DRIVERS_LEGACY is enabled.

Ultimately that means that BCMA_DRIVER_PCI_HOSTMODE depends on
PCI_DRIVERS_LEGACY. Add the missing dependency.

Fixes: d41e6858ba58c ("MIPS: Kconfig: Set default MIPS system type as ...")
Cc: Matt Redfearn 
Cc: James Hogan 
Signed-off-by: Guenter Roeck 
Reviewed-by: James Hogan 
Signed-off-by: Kalle Valo

bcma: Adjust block comment

2017-12-07T13:33:02+00:00

use * for block comments in multiple lines according to kernel coding
style

Reported by: checkpatch.pl

Signed-off-by: Ashish Kalra 
Reviewed-by: Himanshu Jha 
Signed-off-by: Kalle Valo

Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next

2017-11-15T19:56:19+00:00

Pull networking updates from David Miller:
 "Highlights:

   1) Maintain the TCP retransmit queue using an rbtree, with 1GB
      windows at 100Gb this really has become necessary. From Eric
      Dumazet.

   2) Multi-program support for cgroup+bpf, from Alexei Starovoitov.

   3) Perform broadcast flooding in hardware in mv88e6xxx, from Andrew
      Lunn.

   4) Add meter action support to openvswitch, from Andy Zhou.

   5) Add a data meta pointer for BPF accessible packets, from Daniel
      Borkmann.

   6) Namespace-ify almost all TCP sysctl knobs, from Eric Dumazet.

   7) Turn on Broadcom Tags in b53 driver, from Florian Fainelli.

   8) More work to move the RTNL mutex down, from Florian Westphal.

   9) Add 'bpftool' utility, to help with bpf program introspection.
      From Jakub Kicinski.

  10) Add new 'cpumap' type for XDP_REDIRECT action, from Jesper
      Dangaard Brouer.

  11) Support 'blocks' of transformations in the packet scheduler which
      can span multiple network devices, from Jiri Pirko.

  12) TC flower offload support in cxgb4, from Kumar Sanghvi.

  13) Priority based stream scheduler for SCTP, from Marcelo Ricardo
      Leitner.

  14) Thunderbolt networking driver, from Amir Levy and Mika Westerberg.

  15) Add RED qdisc offloadability, and use it in mlxsw driver. From
      Nogah Frankel.

  16) eBPF based device controller for cgroup v2, from Roman Gushchin.

  17) Add some fundamental tracepoints for TCP, from Song Liu.

  18) Remove garbage collection from ipv6 route layer, this is a
      significant accomplishment. From Wei Wang.

  19) Add multicast route offload support to mlxsw, from Yotam Gigi"

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (2177 commits)
  tcp: highest_sack fix
  geneve: fix fill_info when link down
  bpf: fix lockdep splat
  net: cdc_ncm: GetNtbFormat endian fix
  openvswitch: meter: fix NULL pointer dereference in ovs_meter_cmd_reply_start
  netem: remove unnecessary 64 bit modulus
  netem: use 64 bit divide by rate
  tcp: Namespace-ify sysctl_tcp_default_congestion_control
  net: Protect iterations over net::fib_notifier_ops in fib_seq_sum()
  ipv6: set all.accept_dad to 0 by default
  uapi: fix linux/tls.h userspace compilation error
  usbnet: ipheth: prevent TX queue timeouts when device not ready
  vhost_net: conditionally enable tx polling
  uapi: fix linux/rxrpc.h userspace compilation errors
  net: stmmac: fix LPI transitioning for dwmac4
  atm: horizon: Fix irq release error
  net-sysfs: trigger netlink notification on ifalias change via sysfs
  openvswitch: Using kfree_rcu() to simplify the code
  openvswitch: Make local function ovs_nsh_key_attr_size() static
  openvswitch: Fix return value check in ovs_meter_cmd_features()
  ...

Merge tag 'gpio-v4.15-1' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio

2017-11-15T01:23:44+00:00

Pull GPIO updates from Linus Walleij:
 "This is the bulk of GPIO changes for the v4.15 kernel cycle:

  Core:

   - Fix the semantics of raw GPIO to actually be raw. No inversion
     semantics as before, but also no open draining, and allow the raw
     operations to affect lines used for interrupts as the caller
     supposedly knows what they are doing if they are getting the big
     hammer.

   - Rewrote the __inner_function() notation calls to names that make
     more sense. I just find this kind of code disturbing.

   - Drop the .irq_base() field from the gpiochip since now all IRQs are
     mapped dynamically. This is nice.

   - Support for .get_multiple() in the core driver API. This allows us
     to read several GPIO lines with a single register read. This has
     high value for some usecases: it can be used to create
     oscilloscopes and signal analyzers and other things that rely on
     reading several lines at exactly the same instant. Also a generally
     nice optimization. This uses the new assign_bit() macro from the
     bitops lib that was ACKed by Andrew Morton and is implemented for
     two drivers, one of them being the generic MMIO driver so everyone
     using that will be able to benefit from this.

   - Do not allow requests of Open Drain and Open Source setting of a
     GPIO line simultaneously. If the hardware actually supports
     enabling both at the same time the electrical result would be
     disastrous.

   - A new interrupt chip core helper. This will be helpful to deal with
     "banked" GPIOs, which means GPIO controllers with several logical
     blocks of GPIO inside them. This is several gpiochips per device in
     the device model, in contrast to the case when there is a 1-to-1
     relationship between a device and a gpiochip.

  New drivers:

   - Maxim MAX3191x industrial serializer, a very interesting piece of
     professional I/O hardware.

   - Uniphier GPIO driver. This is the GPIO block from the recent
     Socionext (ex Fujitsu and Panasonic) platform.

   - Tegra 186 driver. This is based on the new banked GPIO
     infrastructure.

  Other improvements:

   - Some documentation improvements.

   - Wakeup support for the DesignWare DWAPB GPIO controller.

   - Reset line support on the DesignWare DWAPB GPIO controller.

   - Several non-critical bug fixes and improvements for the Broadcom
     BRCMSTB driver.

   - Misc non-critical bug fixes like exotic errorpaths, removal of dead
     code etc.

   - Explicit comments on fall-through switch() statements"

* tag 'gpio-v4.15-1' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio: (65 commits)
  gpio: tegra186: Remove tegra186_gpio_lock_class
  gpio: rcar: Add r8a77995 (R-Car D3) support
  pinctrl: bcm2835: Fix some merge fallout
  gpio: Fix undefined lock_dep_class
  gpio: Automatically add lockdep keys
  gpio: Introduce struct gpio_irq_chip.first
  gpio: Disambiguate struct gpio_irq_chip.nested
  gpio: Add Tegra186 support
  gpio: Export gpiochip_irq_{map,unmap}()
  gpio: Implement tighter IRQ chip integration
  gpio: Move lock_key into struct gpio_irq_chip
  gpio: Move irq_valid_mask into struct gpio_irq_chip
  gpio: Move irq_nested into struct gpio_irq_chip
  gpio: Move irq_chained_parent to struct gpio_irq_chip
  gpio: Move irq_default_type to struct gpio_irq_chip
  gpio: Move irq_handler to struct gpio_irq_chip
  gpio: Move irqdomain into struct gpio_irq_chip
  gpio: Move irqchip into struct gpio_irq_chip
  gpio: Introduce struct gpio_irq_chip
  pinctrl: armada-37xx: remove unused variable
  ...

gpio: Move irqdomain into struct gpio_irq_chip

2017-11-08T13:06:21+00:00

In order to consolidate the multiple ways to associate an IRQ chip with
a GPIO chip, move more fields into the new struct gpio_irq_chip.

Signed-off-by: Thierry Reding 
Acked-by: Grygorii Strashko 
Signed-off-by: Linus Walleij