Commit Graph

66 Commits

Author SHA1 Message Date
Max Filippov fd5924d8b3 xtensa: ISS: don't hang if stdin EOF is reached
commit 362014c8d9d51d504c167c44ac280169457732be upstream.

Simulator stdin may be connected to a file, when its end is reached
kernel hangs in infinite loop inside rs_poll, because simc_poll always
signals that descriptor 0 is readable and simc_read always returns 0.
Check simc_read return value and exit loop if it's not positive. Also
don't rewind polling timer if it's zero.

Cc: stable@vger.kernel.org
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Willy Tarreau <w@1wt.eu>
2016-06-07 10:42:46 +02:00
Max Filippov e86de8b5ea xtensa: xtfpga: fix hardware lockup caused by LCD driver
commit 4949009eb8d40a441dcddcd96e101e77d31cf1b2 upstream.

LCD driver is always built for the XTFPGA platform, but its base address
is not configurable, and is wrong for ML605/KC705. Its initialization
locks up KC705 board hardware.

Make the whole driver optional, and its base address and bus width
configurable. Implement 4-bit bus access method.

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-05-06 21:56:26 +02:00
Max Filippov ba68845589 xtensa: xtfpga: fix definitions of platform devices
commit a558d99263936b8a67d4eff8918745a77bfd8c31 upstream.

Remove __initdata attribute, as the devices may be used after init
sections are freed.

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-02-13 13:48:01 -08:00
Linus Torvalds c61c48dfe0 Xtensa patchset for v3.10-rc1
-----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1.4.11 (GNU/Linux)
 
 iQIcBAABAgAGBQJRi1p8AAoJEI9vqH3mFV2scb0QAJbq32y6YFWz2VGfxf5RQIWC
 QueuQ4vyDKzuGbQQQ1EvJ6WckLnp9Yu4rlVXBiYMFymWvLEM+8BPLK5ywbsMLaLm
 lDpWs2cUi6hRuEa2dYwsp260mlwAz+DvvUi+TnFN4PIarIAI+CaFevhlWtbayvg/
 TZh9vthBA2qdK8N97WbKgE4eBJgAOLdMybQPtibd9yNiYAD8r2xRqNRoy4dklliV
 Grm1G3BkDFRl+espfbNBAWd+dpxTe8Sw0N9uRf2I1G6pgx0u9i5oOEo78Ur078nc
 E6yauJlQJiogHrsEKCfX5WLWlLEgvsZx4Az4If2i///PSai4/wEDqTUZ2L390/r/
 0ui6YKr1JSVlZLYs4X893Mu+tJYJd8+fiCWXBJY5GqWg9FHzE6RHUBifkHD2DoUm
 UWjGCWtsMrcAy25rPqrVrIOlRdONVuxzp3xW7T9PkZ87r8v/RRJa4VWyWKerNPif
 Qbi/sUXD76mAOY4BisHWeOLpa9us2SOiJLqkDNB22/sH5Qdfh/pso9/BAQom+ESD
 Rfl4rgw99rzVoKiGSf3HbhRPJzghxkCwytpoh2GwvzNp+vZWqWw7AAo5uVbQP0zb
 Fg0ZtHSotCz76dp4vZn042yflPevvPc3N3O2ayC529ZB4eh+3kWfCpzHYWaEmD8e
 HV2+rc0QcUAuidJeLP7P
 =tGki
 -----END PGP SIGNATURE-----

Merge tag 'xtensa-next-20130508' of git://github.com/czankel/xtensa-linux

Pull xtensa updates from Chris Zankel:
 "Support for the latest MMU architecture that allows for a larger
  accessible memory region, and various bug-fixes"

* tag 'xtensa-next-20130508' of git://github.com/czankel/xtensa-linux:
  xtensa: Switch to asm-generic/linkage.h
  xtensa: fix redboot load address
  xtensa: ISS: fix timer_lock usage in rs_open
  xtensa: disable IRQs while IRQ handler is running
  xtensa: enable lockdep support
  xtensa: fix arch_irqs_disabled_flags implementation
  xtensa: add irq flags trace support
  xtensa: provide custom CALLER_ADDR* implementations
  xtensa: add stacktrace support
  xtensa: clean up stpill_registers
  xtensa: don't use a7 in simcalls
  xtensa: don't attempt to use unconfigured timers
  xtensa: provide default platform_pcibios_init implementation
  xtensa: remove KCORE_ELF again
  xtensa: document MMUv3 setup sequence
  xtensa: add MMU v3 support
  xtensa: fix ibreakenable register update
  xtensa: fix oprofile building as module
2013-05-09 14:38:16 -07:00
Geert Uytterhoeven 0757f6159f xtensa simdisk: Fix proc_create_data() conversion fallout
arch/xtensa/platforms/iss/simdisk.c: In function 'proc_read_simdisk':
arch/xtensa/platforms/iss/simdisk.c:220:12: warning: initialization discards 'const' qualifier from pointer target type [enabled by default]
arch/xtensa/platforms/iss/simdisk.c: In function 'proc_write_simdisk':
arch/xtensa/platforms/iss/simdisk.c:241:38: error: 'buffer' undeclared (first use in this function)
arch/xtensa/platforms/iss/simdisk.c:241:38: note: each undeclared identifier is reported only once for each function it appears in

Introduced by commit a69755b187 ("xtensa
simdisk: switch to proc_create_data()")

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-05-09 13:20:20 -04:00
Max Filippov efefbcc500 xtensa: ISS: fix timer_lock usage in rs_open
This fixes the following lockdep splat:

[   66.460000] =================================
[   66.460000] [ INFO: inconsistent lock state ]
[   66.460000] 3.9.0-rc5-00161-ga48dd49 #4 Not tainted
[   66.460000] ---------------------------------
[   66.460000] inconsistent {SOFTIRQ-ON-W} -> {IN-SOFTIRQ-W} usage.
[   66.460000] swapper/1 [HC0[0]:SC1[1]:HE1:SE0] takes:
[   66.460000]  (timer_lock){+.?...}, at: [<d0006cde>] rs_poll+0x12/0xdc
[   66.460000] {SOFTIRQ-ON-W} state was registered at:
[   66.460000]   [<d00421f0>] lock_acquire+0xec/0x13c
[   66.460000]   [<d01ea036>] _raw_spin_lock+0x3a/0x84
[   66.460000]   [<d0006c8c>] rs_open+0x18/0x58
[   66.460000]   [<d0139ea2>] tty_open+0x262/0x3cc
[   66.460000]   [<d00942e0>] chrdev_open+0x8c/0xe0
[   66.460000]   [<d00907b2>] do_dentry_open$isra$16+0x10e/0x190
[   66.460000]   [<d0091141>] finish_open+0x39/0x48
[   66.460000]   [<d009a0b4>] do_last$isra$34+0x6c4/0x824
[   66.460000]   [<d009a27a>] path_openat+0x66/0x310
[   66.460000]   [<d009a53a>] do_filp_open+0x16/0x44
[   66.460000]   [<d0091445>] do_sys_open+0xd5/0x13c
[   66.460000]   [<d00914be>] sys_open+0x12/0x18
[   66.460000]   [<d0413ffc>] kernel_init_freeable+0xe4/0x12c
[   66.460000]   [<d01e2a9c>] kernel_init+0xc/0x9c
[   66.460000]   [<d00044fc>] ret_from_kernel_thread+0x8/0xc
[   66.460000] irq event stamp: 132542
[   66.460000] hardirqs last  enabled at (132542): [<d01ea2ec>] _raw_spin_unlock_irq+0x30/0x44
[   66.460000] hardirqs last disabled at (132541): [<d01ea11e>] _raw_spin_lock_irq+0xe/0x8c
[   66.460000] softirqs last  enabled at (132234): [<d0017d32>] __do_softirq+0x216/0x2a4
[   66.460000] softirqs last disabled at (132539): [<d0018024>] irq_exit+0x38/0x40
[   66.460000]
[   66.460000] other info that might help us debug this:
[   66.460000]  Possible unsafe locking scenario:
[   66.460000]
[   66.460000]        CPU0
[   66.460000]        ----
[   66.460000]   lock(timer_lock);
[   66.460000]   <Interrupt>
[   66.460000]     lock(timer_lock);
[   66.460000]
[   66.460000]  *** DEADLOCK ***
[   66.460000]
[   66.460000] 1 lock held by swapper/1:
[   66.460000]  #0:  (((&serial_timer))){+.-...}, at: [<d001c65c>] call_timer_fn+0x0/0x1f0
[   66.460000]
Stack: d7c2fac0 00000018 00000004 00000001 d7c2faa0 00000004 00000006 d7c2fa90
       9003e87c d7c2fae0 d7c30000 d025a87c 00000001 0000000f 00000000 d7c2fac0
       9004005d d7c2fb10 d7c30000 d7c30338 00000001 00000001 00000000 d7c30338
[   66.460000] Call Trace:
[   66.460000]  [<d01e4f93>] print_usage_bug$part$26+0x1c3/0x1c8
[   66.460000]  [<d003e87c>] mark_lock+0x2b4/0x440
[   66.460000]  [<d004005d>] __lock_acquire+0x54d/0x16c4
[   66.460000]  [<d00421f0>] lock_acquire+0xec/0x13c
[   66.460000]  [<d01ea036>] _raw_spin_lock+0x3a/0x84
[   66.460000]  [<d0006cde>] rs_poll+0x12/0xdc
[   66.460000]  [<d001c71a>] call_timer_fn+0xbe/0x1f0
[   66.460000]  [<d001cd90>] run_timer_softirq+0x198/0x1f4
[   66.460000]  [<d0017c30>] __do_softirq+0x114/0x2a4
[   66.460000]  [<d0018024>] irq_exit+0x38/0x40
[   66.460000]  [<d00046c0>] do_IRQ+0x44/0x48
[   66.460000]  [<d0005c58>] do_interrupt+0x4c/0x54
[   66.460000]  [<d0003c80>] common_exception_return+0x0/0x5c
[   66.460000]  [<d006682c>] free_pcppages_bulk+0x254/0x308
[   66.460000]

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Chris Zankel <chris@zankel.net>
2013-05-09 01:07:11 -07:00
Max Filippov f4b93ba931 xtensa: don't use a7 in simcalls
To support FRAME_POINTER avoid using a7 in __simc (none of the existing
simcalls needs it). Replace calls to __simc with more specific
simc_read, simc_write and simc_lseek calls.

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Chris Zankel <chris@zankel.net>
2013-05-09 01:07:10 -07:00
Max Filippov b06c14e5c1 xtensa: provide default platform_pcibios_init implementation
This fixes the following build error:

  arch/xtensa/kernel/built-in.o:(.init.literal+0xe8): undefined reference
	to `platform_pcibios_init'
  arch/xtensa/kernel/built-in.o: In function `setup_arch':
  (.init.text+0x20e): undefined reference to `platform_pcibios_init'

and allows platform to omit definition of platform_pcibios_init if it's
empty.

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Chris Zankel <chris@zankel.net>
2013-05-09 01:07:09 -07:00
Max Filippov d83ff0bb82 xtensa: fix ibreakenable register update
Only set the register when there is at least one ibreak register,
otherwise the build fails:
	arch/xtensa/kernel/head.S:105: Error: invalid register 'ibreakenable'
	for 'wsr' instruction
	arch/xtensa/platforms/iss/setup.c:67: Error: invalid register
	'ibreakenable' for 'wsr' instruction

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Chris Zankel <chris@zankel.net>
2013-05-09 01:07:09 -07:00
Al Viro db2a144bed block_device_operations->release() should return void
The value passed is 0 in all but "it can never happen" cases (and those
only in a couple of drivers) *and* it would've been lost on the way
out anyway, even if something tried to pass something meaningful.
Just don't bother.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-05-07 02:16:21 -04:00
Al Viro 4fe56e8082 xtensa simdisk: fix braino in "xtensa simdisk: switch to proc_create_data()"
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-05-04 16:02:42 -04:00
Al Viro d9dda78bad procfs: new helper - PDE_DATA(inode)
The only part of proc_dir_entry the code outside of fs/proc
really cares about is PDE(inode)->data.  Provide a helper
for that; static inline for now, eventually will be moved
to fs/proc, along with the knowledge of struct proc_dir_entry
layout.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-04-09 14:13:32 -04:00
Al Viro a69755b187 xtensa simdisk: switch to proc_create_data()
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-04-09 14:13:31 -04:00
Linus Torvalds 9626357371 Changes for arch/xtensa for the 3.9 merge window.
Added features:
 - add support for thread local storage (TLS)
 - add accept4 and finit_module syscalls
 - support medium-priority interrupts
 - add support for dc232c processor variant
 - support file-base simulated disk for ISS simulator
 
 Bug fixes:
 - fix return values returned by the  str[n]cmp functions
 - avoid mmap cache aliasing
 - fix handling of 'windowed registers' in ptrace
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1.4.11 (GNU/Linux)
 
 iQIcBAABAgAGBQJRLSzaAAoJEI9vqH3mFV2s+1AQAIgjO8Q5EcoI6jAvSuTiAbOn
 GQOfSH7hIFkdIuTXZ76JxGfsUHQgsWF7pZMtK6B29P/qS/xIJJsHRA7kwNIiBT/T
 PRYQLrqbZwdRFr1FRgUlU/kBwFALYuEt/wC5z9A33Bv/kBDYNKsQUBiKH7L2qvC9
 6XC7xZ0cG6+8WPgqFt3+lPGyv3z9gD96rlZr2/heuvM68SrNjcchB/19thzLL8uR
 xxgNlapvih+PK6ZivT+5c2cxOK55FkyaLk0jhsCOakpx4aCrxTlQ0Mm/Do+bIn24
 n41X18xnVhsXypcYZ6/ywLeuAeLUH8A8hClb0Ksu6uUSD+umWQJ89mpuQANG28JP
 9e/5d7C6FeHtz+h1ooIveqtI/mFYfspi34En03ByfQurq6q3Z/GOw+6gWA3TRML3
 uwEk92P5zCtjL2kk+vWHJKHf602HaNx8KKvT210sc5sYyjCCPBSxmfeFQ6eDsQ6g
 sdHoxGpbLrYyh7kVIMAdHQe01o6CcUvWBe7+awsDKF0ebqGx6nTVhy8ipphgBm8Q
 m0TUKawD+UCYBfcbYN86sBh0+RNQoHlJsNLpAcDF0xDUPlq0ejmQ6dZj0Z5xA9Qn
 KWOp2rO1KkNDPFvAszkgdsXZqjWhQbsVZw0IF8Ma3YBRAtwl63WRM4SCFCpY5O8U
 jErzdORgjupGt/A7C9Rk
 =ohgg
 -----END PGP SIGNATURE-----

Merge tag 'xtensa-next-20130225' of git://github.com/czankel/xtensa-linux

Pull xtensa update from Chris Zankel:
 "Added features:
   - add support for thread local storage (TLS)

   - add accept4 and finit_module syscalls

   - support medium-priority interrupts

   - add support for dc232c processor variant

   - support file-base simulated disk for ISS simulator

  Bug fixes:

   - fix return values returned by the str[n]cmp functions

   - avoid mmap cache aliasing

   - fix handling of 'windowed registers' in ptrace"

* tag 'xtensa-next-20130225' of git://github.com/czankel/xtensa-linux:
  xtensa: add accept4 syscall
  xtensa: add support for TLS
  xtensa: add missing include asm/uaccess.h to checksum.h
  xtensa: do not enable GENERIC_GPIO by default
  xtensa: complete ptrace handling of register windows
  xtensa: add support for oprofile
  xtensa: move spill_registers to traps.h
  xtensa: ISS: add host file-based simulated disk
  xtensa: fix str[n]cmp return value
  xtensa: avoid mmap cache aliasing
  xtensa: add finit_module syscall
  xtensa: pull signal definitions from signal-defs.h
  xtensa: fix ipc_parse_version selection
  xtensa: dispatch medium-priority interrupts
  xtensa: Add config files for Diamond 233L - Rev C processor variant
  xtensa: use new common dtc rule
  xtensa: rename prom_update_property to of_update_property
2013-02-26 19:53:12 -08:00
Victor Prupis b6c7e873da xtensa: ISS: add host file-based simulated disk
Simdisk is a block device that maps to a file in the host file system.
It is usable for testing in the simulated environment, like xt-sim or
QEMU. Device binding to host file may be changed at runtime via proc
interface provided the device is not in use. Number of block devices
and initial binding to host files is controlled via kernel/module
parameters, with defaults specified in the kernel configuration.

Signed-off-by: Victor Prupis <vnp@tensilica.com>
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Chris Zankel <chris@zankel.net>
2013-02-23 19:22:41 -08:00
Max Filippov 127bc79e30 xtensa: rename prom_update_property to of_update_property
This rename happened in 79d1c71 powerpc+of: Rename the drivers/of prom_*
functions to of_*.

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Chris Zankel <chris@zankel.net>
2013-02-23 19:12:51 -08:00
Jiri Slaby 2e124b4a39 TTY: switch tty_flip_buffer_push
Now, we start converting tty buffer functions to actually use
tty_port. This will allow us to get rid of the need of tty in many
call sites. Only tty_port will needed and hence no more
tty_port_tty_get in those paths.

Now, the one where most of tty_port_tty_get gets removed:
tty_flip_buffer_push.

IOW we also closed all the races in drivers not using tty_port_tty_get
at all yet.

Also we move tty_flip_buffer_push declaration from include/linux/tty.h
to include/linux/tty_flip.h to all others while we are changing it
anyway.

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-01-15 22:30:15 -08:00
Jiri Slaby 92a19f9cec TTY: switch tty_insert_flip_char
Now, we start converting tty buffer functions to actually use
tty_port. This will allow us to get rid of the need of tty in many
call sites. Only tty_port will needed and hence no more
tty_port_tty_get in those paths.

tty_insert_flip_char is the next one to proceed. This one is used all
over the code, so the patch is huge.

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-01-15 22:21:36 -08:00
Chris Zankel 33c760fbb7 xtensa: set the correct ethernet address for xtfpga
The last byte of the mac address is determined by a DIP switch, so
update the OF property with that address.

Signed-off-by: Chris Zankel <chris@zankel.net>
2012-12-18 21:10:26 -08:00
Wei Yongjun 90e3bc798b Use for_each_compatible_node() macro.
Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Acked-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Chris Zankel <chris@zankel.net>
2012-12-18 21:10:25 -08:00
Max Filippov 0d456bad36 xtensa: add support for the XTFPGA boards
The Avnet LX60/LX110/LX200 board is an FPGA board that can be configured with
an Xtensa processor and an OpenCores Ethernet device.

Signed-off-by: Chris Zankel <chris@zankel.net>
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Chris Zankel <chris@zankel.net>
2012-12-18 21:10:24 -08:00
Max Filippov 288dc2b68c xtensa: properly fix missing compiler barrier in simcall
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Chris Zankel <chris@zankel.net>
2012-12-18 21:10:21 -08:00
Max Filippov 94d6c61b97 xtensa: ISS: add BASE_BAUD definition to serial.h
This fixes the following build error in allyesconfig:

drivers/tty/serial/8250/8250_early.c: In function 'parse_options':
drivers/tty/serial/8250/8250_early.c:160:18: error: 'BASE_BAUD' undeclared (first use in this function)

Reported-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Chris Zankel <chris@zankel.net>
2012-12-18 21:10:21 -08:00
Jiri Slaby 191c5f1027 TTY: call tty_port_destroy in the rest of drivers
After commit "TTY: move tty buffers to tty_port", the tty buffers are
not freed in some drivers. This is because tty_port_destructor is not
called whenever a tty_port is freed. This was an assumption I counted
with but was unfortunately untrue. So fix the drivers to fulfil this
assumption.

To be sure, the TTY buffers (and later some stuff) are gone along with
the tty_port, we have to call tty_port_destroy at tear-down places.
This is mostly where the structure containing a tty_port is freed.
This patch does exactly that -- put tty_port_destroy at those places.

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-11-15 17:20:58 -08:00
Max Filippov bc5378fcba xtensa: reorganize SR referencing
- reference SRs by names where possible, not by numbers;
- get rid of __stringify around SR names where possible;
- remove unneeded SR names from asm/regs.h;
- add SREG_ prefix to remaining SR names;

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Chris Zankel <chris@zankel.net>
2012-10-15 21:48:08 -07:00
Max Filippov c88d8df0cc xtensa: ISS: fix rs_put_char
ISS serial console prints garbage instead of symbols printed via
rs_put_char. gcc optimizes away putting prined symbol into memory buffer
because there's no evidence that the buffer is used afterwards.

Make rs_put_char and rs_write use simc_write that has explicit wmb.

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Chris Zankel <chris@zankel.net>
2012-10-15 21:39:20 -07:00
Max Filippov 50c08f8e9f xtensa: ISS: fix specific simcalls
Simcalls that take memory buffer definitely need wmb or rmb to make sure
gcc doesn't optimize away code that fills the buffer.

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Chris Zankel <chris@zankel.net>
2012-10-15 21:39:05 -07:00
Linus Torvalds 1ea4f4f840 Xtensa patchset for 3.7
-----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1.4.11 (GNU/Linux)
 
 iQIcBAABAgAGBQJQc6WkAAoJEI9vqH3mFV2s+S8P/0cQ2xBgjNQBNsdSMuUAnlla
 km54KLyzcT/FEDgLN7LGJqnCHhDEem6swQjsOnUlvnF+4jr/LTCvjY/SbLYiD+8E
 ahOo+YYhLuY9Vyv+V1TO7y1VcQw11+xZOunm10f89myaodXY9jO/pt16N/TTYg+O
 a24viZDrDR+Q+BR4bIQe4ySKNuT2mmFmO3jP6F1iL/Cin8nXl+4UwY3fqyNRfnhH
 p0UngGxQvzgWDyYqBus2DJbRAjudEpoKVBE+8y2ABFanFTQ3pYoFxeROPA9Uup/S
 o/kv8bIKJSQMlEcoviE3oNyK56QyeJe+H0VsZi5gLvOAauAsAeneY6MD/5MsNIej
 9phJa1LDjobZ3AqaQFcHUZDzMHMVdp0DR7zCOjdVxan0+kC/JK4tAdBD8mwkYWco
 Nt0w986k16hSa3u43q5ArdDxnePOkgN63hc+GhCgvsYWcqV3xEBGbMlUls46zwjR
 4ouPCJ+c92NzLHAnylx3Zti5hHbmeNgKrC8kCm1PXZ9XG8OP3Emw97TFQkf+JVYG
 Xsj6RhK8ZLg8atI+nNkpnVByo5ecJaFkIPJnUS3DqEk4AoQiYP1CRDTPy0eF6wIR
 qvyRyudhkdO6FSUBw4aBnEEhlhsgYdwcfI+obk2to9vtLCFKsfPtlVD7G7UDpCmT
 pQO7yVhEMsKuq29+FOLS
 =14Zt
 -----END PGP SIGNATURE-----

Merge tag 'xtensa-next-20121008' of git://github.com/czankel/xtensa-linux

Pull Xtensa patchset from Chris Zankel:
 "The Xtensa tree has been broken for some time now, and this patchset
  brings it back to life.  It has been part of the linux-next tree for
  some time.

  Most changes are inside the xtensa subdirectory; the other changes
  mostly add another rule to already existing #ifdefs to exclude Xtensa,
  where required.  The only 'common' change is to add two more sections
  ('.xt.prop' and '.xt.lit') to the white list in modpost."

* tag 'xtensa-next-20121008' of git://github.com/czankel/xtensa-linux: (27 commits)
  xtensa: Setup CROSS_COMPILE at the top
  xtensa: drop CONFIG_EMBEDDED_RAMDISK
  xtensa: fix TIOCGSERIAL and TIOCSSERIAL definitions
  xtensa: provide dummy gcc intrinsics
  xtensa: add missing symbol exports
  parport: disable for xtensa arch
  xtensa: rename MISC SR definition to avoid name clashes
  hisax: disable build for big-endian xtensa
  xtensa: fix CODA build
  xtensa: fix parallel make
  xtensa: ISS: drop unused io.c
  xtensa: ISS: exit simulator in case of halt or poweroff
  xtensa: ISS: change keyboard polling rate
  xtensa: ISS: add platform_pcibios_init
  xtensa: ISS: add dummy serial.h for ISS platform
  xtensa: change default platform clock frequency to 10MHz
  xtensa: add ARCH_WANT_OPTIONAL_GPIOLIB to xtensa config
  xtensa: set NO_IOPORT to 'n' by default
  xtensa: adopt generic io routines
  xtensa: fix ioremap
  ...
2012-10-09 16:11:46 +09:00
Max Filippov d0fccc0446 xtensa: ISS: drop unused io.c
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Chris Zankel <chris@zankel.net>
2012-10-03 15:12:23 -07:00
Max Filippov 237531714f xtensa: ISS: exit simulator in case of halt or poweroff
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Chris Zankel <chris@zankel.net>
2012-10-03 15:12:19 -07:00
Max Filippov 8bac83289a xtensa: ISS: change keyboard polling rate
Polling rate of once per 20 seconds seems to be too low. Increase it to
10 times per second.

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Chris Zankel <chris@zankel.net>
2012-10-03 15:12:14 -07:00
Max Filippov 5295325fbf xtensa: ISS: add platform_pcibios_init
Provide pcibios initialization function in case PCI is enabled in the
kernel config. This allows building kernel in allmodconfig
configuration.

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Chris Zankel <chris@zankel.net>
2012-10-03 15:12:08 -07:00
Max Filippov 695c617cee xtensa: ISS: add dummy serial.h for ISS platform
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Chris Zankel <chris@zankel.net>
2012-10-03 15:12:03 -07:00
Max Filippov 717460ee3e xtensa: ISS: fix __simc implementation
Do not rely on compiler implicitly placing function arguments into
specifc registers, place them explicitly.

Move __simc and related helpers to platform/simcall.h

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Chris Zankel <chris@zankel.net>
2012-10-03 15:11:25 -07:00
Max Filippov 6aebb64ad4 xtensa: ISS: only build networking if configured
This allows building kernel in allnoconfig configuration.

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Chris Zankel <chris@zankel.net>
2012-10-03 15:11:08 -07:00
Jiri Slaby b19e2ca77e TTY: use tty_port_link_device
So now for those drivers that can use neither tty_port_install nor
tty_port_register_driver but still have tty_port available before
tty_register_driver we use newly added tty_port_link_device.

The rest of the drivers that still do not provide tty_struct <->
tty_port link will have to be converted to implement
tty->ops->install.

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Acked-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-08-13 16:50:19 -07:00
Jiri Slaby 11ba8899f9 TTY: remove serialP.h inclusion from some files
All of them do not use the ugly interface defined in that header.

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-03-08 11:47:02 -08:00
Jiri Slaby 885f8b0f8a TTY: iss/console, use tty_port
Even though the port is not used for anything real there yet, this
will change as tty buffers will be in tty_port in the near future. So
the port will be needed in all drivers.

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Cc: Chris Zankel <chris@zankel.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-03-08 11:47:01 -08:00
Jiri Slaby c9ddb1d6e2 XTENSA: iss/console, fix potential deadlock
If the timer ticks while we are holding the spinlock, the system
deadlocks. It is due to synchronous del_timer.

So to fix that, use spinlocks that properly disable bottom halves.

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Cc: Chris Zankel <chris@zankel.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-03-08 11:47:01 -08:00
Jiri Slaby 86e7e87463 XTENSA: iss/console, use setup_timer
Use setup_timer instead of explicit assignments.

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Cc: Chris Zankel <chris@zankel.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-03-08 11:47:01 -08:00
Jiri Slaby 410235fd4d TTY: remove unneeded tty->index checks
Checking if tty->index is in bounds is not needed. The tty has the
index set in the initial open. This is done in get_tty_driver. And it
can be only in interval <0,driver->num).

So remove the tests which check exactly this interval. Some are
left untouched as they check against the current backing device count.
(Leaving apart that the check is racy in most of the cases.)

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-03-08 11:42:21 -08:00
Jiri Slaby 2f16669d32 TTY: remove re-assignments to tty_driver members
All num, magic and owner are set by alloc_tty_driver. No need to
re-set them on each allocation site.

pti driver sets something different to what it passes to
alloc_tty_driver. It is not a bug, since we don't use the lines
parameter in any way. Anyway this is fixed, and now we do the right
thing.

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Acked-by: Tilman Schmidt <tilman@imap.cc>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-03-08 11:37:58 -08:00
Jiri Pirko afc4b13df1 net: remove use of ndo_set_multicast_list in drivers
replace it by ndo_set_rx_mode

Signed-off-by: Jiri Pirko <jpirko@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-08-17 20:22:03 -07:00
Thomas Gleixner 610e1756ea xtensa: Convert genirq namespace
Scripted with coccinelle.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2011-03-24 20:35:58 +01:00
Chris Zankel 0a972468ec xtensa: Fix the network driver for the simulator target
Network methods have moved to the net_device_ops structure.

Signed-off-by: Chris Zankel <chris@zankel.net>
2010-05-02 08:37:20 -07:00
Tejun Heo 5a0e3ad6af include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
percpu.h is included by sched.h and module.h and thus ends up being
included when building most .c files.  percpu.h includes slab.h which
in turn includes gfp.h making everything defined by the two files
universally available and complicating inclusion dependencies.

percpu.h -> slab.h dependency is about to be removed.  Prepare for
this change by updating users of gfp and slab facilities include those
headers directly instead of assuming availability.  As this conversion
needs to touch large number of source files, the following script is
used as the basis of conversion.

  http://userweb.kernel.org/~tj/misc/slabh-sweep.py

The script does the followings.

* Scan files for gfp and slab usages and update includes such that
  only the necessary includes are there.  ie. if only gfp is used,
  gfp.h, if slab is used, slab.h.

* When the script inserts a new include, it looks at the include
  blocks and try to put the new include such that its order conforms
  to its surrounding.  It's put in the include block which contains
  core kernel includes, in the same order that the rest are ordered -
  alphabetical, Christmas tree, rev-Xmas-tree or at the end if there
  doesn't seem to be any matching order.

* If the script can't find a place to put a new include (mostly
  because the file doesn't have fitting include block), it prints out
  an error message indicating which .h file needs to be added to the
  file.

The conversion was done in the following steps.

1. The initial automatic conversion of all .c files updated slightly
   over 4000 files, deleting around 700 includes and adding ~480 gfp.h
   and ~3000 slab.h inclusions.  The script emitted errors for ~400
   files.

2. Each error was manually checked.  Some didn't need the inclusion,
   some needed manual addition while adding it to implementation .h or
   embedding .c file was more appropriate for others.  This step added
   inclusions to around 150 files.

3. The script was run again and the output was compared to the edits
   from #2 to make sure no file was left behind.

4. Several build tests were done and a couple of problems were fixed.
   e.g. lib/decompress_*.c used malloc/free() wrappers around slab
   APIs requiring slab.h to be added manually.

5. The script was run on all .h files but without automatically
   editing them as sprinkling gfp.h and slab.h inclusions around .h
   files could easily lead to inclusion dependency hell.  Most gfp.h
   inclusion directives were ignored as stuff from gfp.h was usually
   wildly available and often used in preprocessor macros.  Each
   slab.h inclusion directive was examined and added manually as
   necessary.

6. percpu.h was updated not to include slab.h.

7. Build test were done on the following configurations and failures
   were fixed.  CONFIG_GCOV_KERNEL was turned off for all tests (as my
   distributed build env didn't work with gcov compiles) and a few
   more options had to be turned off depending on archs to make things
   build (like ipr on powerpc/64 which failed due to missing writeq).

   * x86 and x86_64 UP and SMP allmodconfig and a custom test config.
   * powerpc and powerpc64 SMP allmodconfig
   * sparc and sparc64 SMP allmodconfig
   * ia64 SMP allmodconfig
   * s390 SMP allmodconfig
   * alpha SMP allmodconfig
   * um on x86_64 SMP allmodconfig

8. percpu.h modifications were reverted so that it could be applied as
   a separate patch and serve as bisection point.

Given the fact that I had only a couple of failures from tests on step
6, I'm fairly confident about the coverage of this conversion patch.
If there is a breakage, it's likely to be something in one of the arch
headers which should be easily discoverable easily on most builds of
the specific arch.

Signed-off-by: Tejun Heo <tj@kernel.org>
Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
2010-03-30 22:02:32 +09:00
Jiri Pirko 4cd24eaf0c net: use netdev_mc_count and netdev_mc_empty when appropriate
This patch replaces dev->mc_count in all drivers (hopefully I didn't miss
anything). Used spatch and did small tweaks and conding style changes when
it was suitable.

Jirka

Signed-off-by: Jiri Pirko <jpirko@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-12 11:38:58 -08:00
Alexey Dobriyan 1cceefd3a2 tty: const: constify remaining tty_operations
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-12-11 15:18:03 -08:00
Patrick McHardy ec634fe328 net: convert remaining non-symbolic return values in ndo_start_xmit() functions
This patch converts the remaining occurences of raw return values to their
symbolic counterparts in ndo_start_xmit() functions that were missed by the
previous automatic conversion.

Additionally code that assumed the symbolic value of NETDEV_TX_OK to be zero
is changed to explicitly use NETDEV_TX_OK.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-07-05 19:23:38 -07:00
Daniel Glockner 759c67e87b xtensa: add m41t62 rtc to s6105 platform
Signed-off-by: Daniel Glockner <dg@emlix.com>
Cc: David Brownell <david-b@pacbell.net>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2009-06-22 02:38:06 -07:00