Commit Graph

53 Commits

Author SHA1 Message Date
Zhang Qilong
aa57e77b3d HSI: Fix PM usage counter unbalance in ssi_hw_init
pm_runtime_get_sync will increment pm usage counter
even it failed. Forgetting to putting operation will
result in reference leak here. We fix it by replacing
it with pm_runtime_resume_and_get to keep usage counter
balanced.

Fixes: b209e047bc ("HSI: Introduce OMAP SSI driver")
Signed-off-by: Zhang Qilong <zhangqilong3@huawei.com>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
2020-12-29 23:57:06 +01:00
Jing Xiangfeng
41fff6e19b HSI: omap_ssi: Don't jump to free ID in ssi_add_controller()
In current code, it jumps to ida_simple_remove() when ida_simple_get()
failes to allocate an ID. Just return to fix it.

Fixes: 0fae198988 ("HSI: omap_ssi: built omap_ssi and omap_ssi_port into one module")
Signed-off-by: Jing Xiangfeng <jingxiangfeng@huawei.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
2020-11-29 00:39:29 +01:00
Gustavo A. R. Silva
df561f6688 treewide: Use fallthrough pseudo-keyword
Replace the existing /* fall through */ comments and its variants with
the new pseudo-keyword macro fallthrough[1]. Also, remove unnecessary
fall-through markings when it is the case.

[1] https://www.kernel.org/doc/html/v5.7/process/deprecated.html?highlight=fallthrough#implicit-switch-case-fall-through

Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
2020-08-23 17:36:59 -05:00
Masahiro Yamada
a7f7f6248d treewide: replace '---help---' in Kconfig files with 'help'
Since commit 84af7a6194 ("checkpatch: kconfig: prefer 'help' over
'---help---'"), the number of '---help---' has been gradually
decreasing, but there are still more than 2400 instances.

This commit finishes the conversion. While I touched the lines,
I also fixed the indentation.

There are a variety of indentation styles found.

  a) 4 spaces + '---help---'
  b) 7 spaces + '---help---'
  c) 8 spaces + '---help---'
  d) 1 space + 1 tab + '---help---'
  e) 1 tab + '---help---'    (correct indentation)
  f) 1 tab + 1 space + '---help---'
  g) 1 tab + 2 spaces + '---help---'

In order to convert all of them to 1 tab + 'help', I ran the
following commend:

  $ find . -name 'Kconfig*' | xargs sed -i 's/^[[:space:]]*---help---/\thelp/'

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2020-06-14 01:57:21 +09:00
Stephen Boyd
c1030cd456 HSI: Remove dev_err() usage after platform_get_irq()
We don't need dev_err() messages when platform_get_irq() fails now that
platform_get_irq() prints an error message itself when something goes
wrong. Let's remove these prints with a simple semantic patch.

// <smpl>
@@
expression ret;
struct platform_device *E;
@@

ret =
(
platform_get_irq(E, ...)
|
platform_get_irq_byname(E, ...)
);

if ( \( ret < 0 \| ret <= 0 \) )
{
(
-if (ret != -EPROBE_DEFER)
-{ ...
-dev_err(...);
-... }
|
...
-dev_err(...);
)
...
}
// </smpl>

While we're here, remove braces on if statements that only have one
statement (manually).

Cc: Sebastian Reichel <sre@kernel.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Stephen Boyd <swboyd@chromium.org>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
2019-07-30 22:40:03 +02:00
Thomas Gleixner
2b27bdcc20 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 336
Based on 1 normalized pattern(s):

  this program is free software you can redistribute it and or modify
  it under the terms of the gnu general public license version 2 as
  published by the free software foundation this program is
  distributed in the hope that it will be useful but without any
  warranty without even the implied warranty of merchantability or
  fitness for a particular purpose see the gnu general public license
  for more details you should have received a copy of the gnu general
  public license along with this program if not write to the free
  software foundation inc 51 franklin st fifth floor boston ma 02110
  1301 usa

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-only

has been chosen to replace the boilerplate/reference in 246 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Alexios Zavras <alexios.zavras@intel.com>
Reviewed-by: Allison Randal <allison@lohutok.net>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190530000436.674189849@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-06-05 17:37:07 +02:00
Thomas Gleixner
ec8f24b7fa treewide: Add SPDX license identifier - Makefile/Kconfig
Add SPDX license identifiers to all Make/Kconfig files which:

 - Have no license information of any form

These files fall under the project license, GPL v2 only. The resulting SPDX
license identifier is:

  GPL-2.0-only

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-21 10:50:46 +02:00
YueHaibing
1ff85bfa16 HSI: omap_ssi_port: fix debugfs_simple_attr.cocci warnings
Use DEFINE_DEBUGFS_ATTRIBUTE rather than DEFINE_SIMPLE_ATTRIBUTE
for debugfs files.

Semantic patch information:
Rationale: DEFINE_SIMPLE_ATTRIBUTE + debugfs_create_file()
imposes some significant overhead as compared to
DEFINE_DEBUGFS_ATTRIBUTE + debugfs_create_file_unsafe().

Generated by: scripts/coccinelle/api/debugfs/debugfs_simple_attr.cocci

Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
2019-02-14 12:36:21 +01:00
Yangtao Li
3a658e09a2 HSI: omap_ssi: Change to use DEFINE_SHOW_ATTRIBUTE macro
Use DEFINE_SHOW_ATTRIBUTE macro to simplify the code.

Signed-off-by: Yangtao Li <tiny.windzz@gmail.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
2018-12-05 00:16:59 +01:00
Randy Dunlap
ac3167257b headers: separate linux/mod_devicetable.h from linux/platform_device.h
At over 4000 #includes, <linux/platform_device.h> is the 9th most
#included header file in the Linux kernel.  It does not need
<linux/mod_devicetable.h>, so drop that header and explicitly add
<linux/mod_devicetable.h> to source files that need it.

   4146 #include <linux/platform_device.h>

After this patch, there are 225 files that use <linux/mod_devicetable.h>,
for a reduction of around 3900 times that <linux/mod_devicetable.h>
does not have to be read & parsed.

    225 #include <linux/mod_devicetable.h>

This patch was build-tested on 20 different arch-es.

It also makes these drivers SubmitChecklist#1 compliant.

Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Reported-by: kbuild test robot <lkp@intel.com> # drivers/media/platform/vimc/
Reported-by: kbuild test robot <lkp@intel.com> # drivers/pinctrl/pinctrl-u300.c
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-07-07 17:52:26 +02:00
Pavel Machek
3210b4fca6 HSI: omap_ssi_core: fix kilo to be "k" not "K"
Kilo should be "k" not "K", fix it it comments and messages.

Signed-off-by: Pavel Machek <pavel@ucw.cz>

index 88e48b3..41a09f5 100644

Signed-off-by: Sebastian Reichel <sre@kernel.org>
2017-10-01 17:19:50 +02:00
Markus Elfring
0fbad7c8e2 HSI: omap_ssi: Delete an error message for a failed memory allocation in ssi_add_controller()
The script "checkpatch.pl" pointed information out like the following.

WARNING: Possible unnecessary 'out of memory' message

Thus remove such a statement here.

Link: http://events.linuxfoundation.org/sites/events/files/slides/LCJ16-Refactor_Strings-WSang_0.pdf
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
2017-06-08 13:21:43 +02:00
Markus Elfring
8621e620c1 HSI: omap_ssi: Fix a typo in a comment line
Add a missing character in this description for a function call.

Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
2017-06-08 13:21:43 +02:00
Markus Elfring
4a8557de7f HSI: omap_ssi: Use devm_kcalloc() in ssi_add_controller()
* A multiplication for the size determination of a memory allocation
  indicated that an array data structure should be processed.
  Thus use the corresponding function "devm_kcalloc".

  This issue was detected by using the Coccinelle software.

* Replace the specification of a data type by a pointer dereference
  to make the corresponding size determination a bit safer according to
  the Linux coding style convention.

Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
2017-06-08 13:21:43 +02:00
Sebastian Reichel
9c99e5e519 HSI: omap_ssi: drop pm_runtime_irq_safe
pm_runtime_irq_safe increases the parents runtime usage
counter effectively keeping the OMAP SoC from idling.

Signed-off-by: Sebastian Reichel <sre@kernel.org>
Acked-by: Tony Lindgren <tony@atomide.com>
Tested-by: Pavel Machek <pavel@ucw.cz>
2016-06-28 00:40:08 +02:00
Sebastian Reichel
ad60db2f9f HSI: omap_ssi_port: use rpm autosuspend API
Instead of immediately sending the SSI module to
sleep, wait some time in case of new incoming or
outgoing traffic.

Signed-off-by: Sebastian Reichel <sre@kernel.org>
Tested-by: Pavel Machek <pavel@ucw.cz>
2016-06-28 00:40:03 +02:00
Sebastian Reichel
4e552310cd HSI: omap_ssi: call msg->complete() from process context
msg->complete() should always be called from process context once
irq_safe runtime pm flag is no longer set for omap-ssi.

Signed-off-by: Sebastian Reichel <sre@kernel.org>
Tested-by: Pavel Machek <pavel@ucw.cz>
2016-06-28 00:40:00 +02:00
Sebastian Reichel
604fdfa458 HSI: omap_ssi_port: ensure clocks are kept enabled during transfer
ensure, that clocks remain enabled, when a transfer is started.

Signed-off-by: Sebastian Reichel <sre@kernel.org>
Tested-by: Pavel Machek <pavel@ucw.cz>
2016-06-28 00:39:56 +02:00
Sebastian Reichel
d2b8d695c6 HSI: omap_ssi_port: replace pm_runtime_put_sync with non-sync variant
There is no need to wait for hardware to really reach idle states,
so just release runtime PM asynchronously.

Signed-off-by: Sebastian Reichel <sre@kernel.org>
Tested-by: Pavel Machek <pavel@ucw.cz>
2016-06-28 00:39:43 +02:00
Sebastian Reichel
fa1572d956 HSI: omap_ssi_port: avoid calling runtime_pm_*_sync inside spinlock
runtime_pm_*_sync can block when irq_safe flag is removed
from omap-ssi driver, so it may not be called while a
spinlock is held.

Signed-off-by: Sebastian Reichel <sre@kernel.org>
Tested-by: Pavel Machek <pavel@ucw.cz>
2016-06-28 00:39:39 +02:00
Sebastian Reichel
62aa292b3e HSI: omap_ssi_port: avoid pm_runtime_get_sync in ssi_start_dma and ssi_start_pio
These functions may be called from atomic context,
so avoid synchronous runtime pm calls.

Signed-off-by: Sebastian Reichel <sre@kernel.org>
Tested-by: Pavel Machek <pavel@ucw.cz>
2016-06-28 00:39:36 +02:00
Sebastian Reichel
c4a6257315 HSI: omap_ssi_port: switch to threaded pio irq
Move pio interrupt handler from tasklet into thread to
allow runtime_pm_get_sync calls without irq_safe being
set.

Signed-off-by: Sebastian Reichel <sre@kernel.org>
Tested-by: Pavel Machek <pavel@ucw.cz>
2016-06-28 00:39:32 +02:00
Sebastian Reichel
927d3f8f73 HSI: omap_ssi_core: remove pm_runtime_get_sync call from tasklet
We may not call pm_runtime_get_sync() from tasklet, since
it can block once pm_runtime_irq_safe is removed for omap-ssi.

Since irq can should only be created for a running device,
we assume, that the device is already running and use non-
synchronous API instead.

Signed-off-by: Sebastian Reichel <sre@kernel.org>
Tested-by: Pavel Machek <pavel@ucw.cz>
2016-06-28 00:39:26 +02:00
Sebastian Reichel
ea88f717cd HSI: omap_ssi_core: use pm_runtime_put instead of pm_runtime_put_sync
There is no need to disable the device synchronously, so
don't do it.

Signed-off-by: Sebastian Reichel <sre@kernel.org>
Tested-by: Pavel Machek <pavel@ucw.cz>
2016-06-28 00:39:21 +02:00
Sebastian Reichel
7c5d81620e HSI: omap_ssi_port: prepare start_tx/stop_tx for blocking pm_runtime calls
ssi_start_tx and ssi_stop_tx may be called from atomic context. Once
pm_runtime_irq_safe() is removed for omap-ssi, this will fail, due
to blocking pm_runtime_*_sync() calls.

This fixes ssi_stop_tx by using non-sync API and ssi_start_tx by
using a worker thread.

Signed-off-by: Sebastian Reichel <sre@kernel.org>
Tested-by: Pavel Machek <pavel@ucw.cz>
2016-06-28 00:39:15 +02:00
Sebastian Reichel
2083057aac HSI: omap_ssi_port: replace wkin_cken with atomic bitmap operations
This simplifies the code and avoids holding a spin_lock when
runtime pm calls are made. Once the irq_safe flag is removed
for omap_ssi's runtime pm, pm_runtime_get/put_sync can sleep,
which is a no-go while holding a spin_lock.

Signed-off-by: Sebastian Reichel <sre@kernel.org>
Tested-by: Pavel Machek <pavel@ucw.cz>
2016-06-28 00:38:47 +02:00
Sebastian Reichel
cb70e4c1bc HSI: omap_ssi: convert cawake irq handler to thread
Convert cawake interrupt handler from tasklet to
threaded interrupt handler in preparation of
blocking runtime_pm calls.

Signed-off-by: Sebastian Reichel <sre@kernel.org>
Tested-by: Pavel Machek <pavel@ucw.cz>
2016-06-28 00:38:43 +02:00
Sebastian Reichel
b6616be324 HSI: omap_ssi: do not reset module
module reset and power management rule setup
is already done by hwmod. Remove this cruft,
which predates hwmod.

Signed-off-by: Sebastian Reichel <sre@kernel.org>
Acked-by: Tony Lindgren <tony@atomide.com>
Tested-by: Pavel Machek <pavel@ucw.cz>
2016-06-28 00:37:43 +02:00
Sebastian Reichel
8c009f1f5d HSI: omap_ssi_port: remove useless newline
Signed-off-by: Sebastian Reichel <sre@kernel.org>
Tested-by: Pavel Machek <pavel@ucw.cz>
2016-06-28 00:37:20 +02:00
Arnd Bergmann
c2f90a465d HSI: omap-ssi: move omap_ssi_port_update_fclk
After the clk change support, the ssi omap ssi core driver
now calls into the port driver to change fclk. This function
was previously inside of an #ifdef, because it was only used
when CONFIG_PM is enabled. Now it also gets used without
power management support:

drivers/hsi/built-in.o: In function `ssi_clk_event':
omap_ssi_port.c:(.text+0x1bf8): undefined reference to `omap_ssi_port_update_fclk'

This moves the function outside of the CONFIG_PM guard.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Fixes: 4bcf741452 ("HSI: omap-ssi: add clk change support")
Signed-off-by: Sebastian Reichel <sre@kernel.org>
2016-05-09 22:45:18 +02:00
Arnd Bergmann
ac8e3ff3a0 HSI: omap-ssi: include pinctrl header files
The driver now uses some pinctrl functions, but fails
to build if PINCTRL is disabled because the respective
header files are only included indirectly:

drivers/hsi/controllers/omap_ssi_core.c: In function 'ssi_clk_event':
drivers/hsi/controllers/omap_ssi_core.c:317:4: error: implicit declaration of function 'pinctrl_pm_select_idle_state' [-Werror=implicit-function-declaration]
drivers/hsi/controllers/omap_ssi_core.c:339:4: error: implicit declaration of function 'pinctrl_pm_select_default_state' [-Werror=implicit-function-declaration]
drivers/hsi/controllers/omap_ssi_port.c: In function 'ssi_flush':
drivers/hsi/controllers/omap_ssi_port.c:520:2: error: implicit declaration of function 'pinctrl_pm_select_idle_state' [-Werror=implicit-function-declaration]

This includes the headers from the files that call the functions,
which works even if pinctrl is turned off.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Fixes: 4bcf741452 ("HSI: omap-ssi: add clk change support")
Signed-off-by: Sebastian Reichel <sre@kernel.org>
2016-05-09 22:45:18 +02:00
Arnd Bergmann
53c703501e HSI: omap-ssi: add COMMON_CLK dependency
Enabling the omap ssi driver without COMMON_CLK results in a build failure:

drivers/hsi/controllers/omap_ssi_core.c: In function 'ssi_clk_event':
drivers/hsi/controllers/omap_ssi_core.c:304:7: error: 'PRE_RATE_CHANGE' undeclared (first use in this function)

This adds a Kconfig dependency to avoid the invalid configuration.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Fixes: 4bcf741452 ("HSI: omap-ssi: add clk change support")
Signed-off-by: Sebastian Reichel <sre@kernel.org>
2016-05-09 22:45:18 +02:00
Sebastian Reichel
4bcf741452 HSI: omap-ssi: add clk change support
This adds support for frequency changes of the SSI
functional clock, which may occur due to DVFS.

Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-By: Sebastian Reichel <sre@kernel.org>
2016-05-02 21:56:25 +02:00
Sebastian Reichel
0fae198988 HSI: omap_ssi: built omap_ssi and omap_ssi_port into one module
Merge omap_ssi and omap_ssi_port into one module. This
fixes problems with module cycle dependencies introduced
by future patches.

Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
2016-05-02 21:56:21 +02:00
Sebastian Reichel
2a57aba850 HSI: omap_ssi: fix removal of port platform device
This avoids removal of the HSI port device when
only the platform port device should be removed
and clears the POPULATED bit in the DT node, so
that a new platform device is created when the
driver is probed again.

Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
2016-05-02 21:56:17 +02:00
Sebastian Reichel
0845e1f20a HSI: omap_ssi: make sure probe stays available
device can be unbind/rebind, so probe should
stay available.

Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
2016-05-02 21:56:12 +02:00
Sebastian Reichel
f704e1103e HSI: omap_ssi: fix module unloading
Removal of ssi controller debugfs directory must
happen after the clients have been removed from
it.

Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
2016-05-02 21:56:01 +02:00
Sebastian Reichel
73e6ce09c0 HSI: omap_ssi_port: switch to gpiod API
Simplify driver by switching to new gpio descriptor based API.

Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
2016-05-02 21:55:20 +02:00
Andrzej Hajda
525e1abc6b HSI: omap_ssi_port: fix handling of_get_named_gpio result
The function can return negative value.

The problem has been detected using proposed semantic patch
scripts/coccinelle/tests/unsigned_lesser_than_zero.cocci [1].

[1]: http://permalink.gmane.org/gmane.linux.kernel/2038576

Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
2016-01-07 16:07:54 +01:00
Andrzej Hajda
6bf6ded300 HSI: omap_ssi: fix handling ida_simple_get result
The function can return negative value.

The problem has been detected using proposed semantic patch
scripts/coccinelle/tests/unsigned_lesser_than_zero.cocci [1].

[1]: http://permalink.gmane.org/gmane.linux.kernel/2038576

Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
2016-01-07 16:06:22 +01:00
Sanjeev Sharma
16bd5865cd hsi: controllers:remove redundant code
Use devm_ioremap_resource() in order to make the code simpler,
and remove redundant return value check of platform_get_resource()
because this value is alreadytaken care by devm_ioremap_resource()

Signed-off-by: Sanjeev Sharma <sanjeev_sharma@mentor.com>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
2015-10-30 16:10:40 +01:00
Roger Quadros
e74eba0493 hsi: omap_ssi_port: Prevent warning if cawake_gpio is not defined.
The error handling path is broken as cawake_gpio was defined as
unsigned integer causing the following warnings on boards that don't
use SSI port and so don't have cawake_gpio defined. e.g. beagleboard C4.

[   30.094635] WARNING: CPU: 0 PID: 322 at drivers/gpio/gpiolib.c:86 gpio_to_desc+0xa4/0xb8()
[   30.103363] invalid GPIO -2
[   30.106292] Modules linked in: omap_ssi_port(+) cpufreq_dt cfbfillrect cfbimgblt leds_gpio cfbcopyarea thermal_sys led_class hwmon gpio_keys encoder_tfp410 connector_analog_tv connector_dvi omap_hdq snd phy_i
[   30.145477] CPU: 0 PID: 322 Comm: modprobe Not tainted 4.3.0-rc4-00030-gca978c0-dirty #335
[   30.154174] Hardware name: Generic OMAP3-GP (Flattened Device Tree)
[   30.160827] [<c0016ef4>] (unwind_backtrace) from [<c00131f4>] (show_stack+0x10/0x14)
[   30.168975] [<c00131f4>] (show_stack) from [<c033cf08>] (dump_stack+0x80/0x9c)
[   30.176635] [<c033cf08>] (dump_stack) from [<c003e920>] (warn_slowpath_common+0x7c/0xb8)
[   30.185180] [<c003e920>] (warn_slowpath_common) from [<c003e9f0>] (warn_slowpath_fmt+0x30/0x40)
[   30.194366] [<c003e9f0>] (warn_slowpath_fmt) from [<c0376314>] (gpio_to_desc+0xa4/0xb8)
[   30.202819] [<c0376314>] (gpio_to_desc) from [<c0376ac8>] (gpio_request_one+0x14/0x11c)
[   30.211273] [<c0376ac8>] (gpio_request_one) from [<c037370c>] (devm_gpio_request_one+0x3c/0x78)
[   30.220458] [<c037370c>] (devm_gpio_request_one) from [<bf184210>] (ssi_port_probe+0x118/0x504 [omap_ssi_port])
[   30.231170] [<bf184210>] (ssi_port_probe [omap_ssi_port]) from [<c03d4cfc>] (platform_drv_probe+0x48/0xa4)
[   30.241424] [<c03d4cfc>] (platform_drv_probe) from [<c03d3678>] (driver_probe_device+0x1dc/0x2a0)
[   30.250793] [<c03d3678>] (driver_probe_device) from [<c03d37d0>] (__driver_attach+0x94/0x98)
[   30.259643] [<c03d37d0>] (__driver_attach) from [<c03d1d60>] (bus_for_each_dev+0x54/0x88)
[   30.268249] [<c03d1d60>] (bus_for_each_dev) from [<c03d2d50>] (bus_add_driver+0xe8/0x1f8)
[   30.276916] [<c03d2d50>] (bus_add_driver) from [<c03d4118>] (driver_register+0x78/0xf4)
[   30.285369] [<c03d4118>] (driver_register) from [<c03d5380>] (__platform_driver_probe+0x34/0xd8)
[   30.294647] [<c03d5380>] (__platform_driver_probe) from [<c00097e4>] (do_one_initcall+0x80/0x1d8)
[   30.303985] [<c00097e4>] (do_one_initcall) from [<c011617c>] (do_init_module+0x5c/0x1cc)
[   30.312561] [<c011617c>] (do_init_module) from [<c00c7a68>] (load_module+0x18c8/0x1f0c)
[   30.320983] [<c00c7a68>] (load_module) from [<c00c8188>] (SyS_init_module+0xdc/0x150)
[   30.329223] [<c00c8188>] (SyS_init_module) from [<c000f7e0>] (ret_fast_syscall+0x0/0x1c)

Fixes: b209e047bc ("HSI: Introduce OMAP SSI driver")
Signed-off-by: Roger Quadros <rogerq@ti.com>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
2015-10-14 13:24:44 +02:00
Paul Gortmaker
a1a0bec593 drivers/hsi: include <module.h> for modular omap_ssi code
These files are built off of a tristate Kconfig option and also contain
modular function calls so they should explicitly include module.h to
avoid compile breakage during header shuffles done in the future.

We change the one header file wich gives us coverage on both files:
   drivers/hsi/controllers/omap_ssi.c
   drivers/hsi/controllers/omap_ssi_port.c

Cc: Sebastian Reichel <sre@kernel.org>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
2015-06-16 14:12:25 -04:00
Linus Torvalds
d3255ec483 * misc. fixes in omap-ssi and nokia-modem drivers
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Merge tag 'hsi-for-3.19' of git://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-hsi

Pull HSI update from Sebastian Reichel:
 "Misc fixes in omap-ssi and nokia-modem drivers"

* tag 'hsi-for-3.19' of git://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-hsi:
  HSI: nokia-modem: fix error handling of irq_of_parse_and_map
  HSI: nokia-modem: setup default value for pm parameter
  HSI: omap_ssi_port: Don't print uninitialized err
  HSI: remove deprecated IRQF_DISABLED
2014-12-15 17:33:47 -08:00
Linus Torvalds
e6b5be2be4 Driver core patches for 3.19-rc1
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.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'driver-core-3.19-rc1' of 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
  ...
2014-12-14 16:10:09 -08:00
Rafael J. Wysocki
96a1c18a7b hsi / OMAP / PM: Replace CONFIG_PM_RUNTIME with CONFIG_PM
After commit b2b49ccbdd (PM: Kconfig: Set PM_RUNTIME if PM_SLEEP is
selected) PM_RUNTIME is always set if PM is set, so #ifdef blocks
depending on CONFIG_PM_RUNTIME may now be changed to depend on
CONFIG_PM.

Do that for the omap_ssi driver.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Acked-By: Sebastian Reichel <sre@kernel.org>
2014-12-04 01:07:01 +01:00
Wolfram Sang
53b72c1787 hsi: controllers: drop owner assignment from platform_drivers
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>
2014-10-20 16:20:35 +02:00
Sebastian Reichel
068afbbebe HSI: omap_ssi_port: Don't print uninitialized err
Do not print err variable, that has nothing to do with the error.
This fixes a warning, that is printed at build time:

drivers/hsi/controllers/omap_ssi_port.c: In function ‘ssi_port_probe’:
drivers/hsi/controllers/omap_ssi_port.c:1121:10: warning: ‘err’ may be used uninitialized in this function [-Wuninitialized]

Signed-off-by: Sebastian Reichel <sre@kernel.org>
2014-10-20 00:11:59 +02:00
Wei Yongjun
3fd276e9c0 HSI: omap_ssi: Fix return value check in ssi_debug_add_ctrl()
In case of error, the function debugfs_create_*() returns NULL
pointer not ERR_PTR() if debugfs is enabled. The IS_ERR() test
in the return value check should be replaced with NULL test.

Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
2014-07-31 00:20:33 +02:00
Wei Yongjun
c2acb7c4d5 HSI: omap_ssi_port: Fix return value check in ssi_debug_add_port()
In case of error, the function debugfs_create_*() returns NULL
pointer not ERR_PTR() if debugfs is enabled. The IS_ERR() test
in the return value check should be replaced with NULL test.

Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
2014-07-31 00:20:21 +02:00