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2017-05-10Merge tag 'hwparam-20170420' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs Pull hw lockdown support from David Howells: "Annotation of module parameters that configure hardware resources including ioports, iomem addresses, irq lines and dma channels. This allows a future patch to prohibit the use of such module parameters to prevent that hardware from being abused to gain access to the running kernel image as part of locking the kernel down under UEFI secure boot conditions. Annotations are made by changing: module_param(n, t, p) module_param_named(n, v, t, p) module_param_array(n, t, m, p) to: module_param_hw(n, t, hwtype, p) module_param_hw_named(n, v, t, hwtype, p) module_param_hw_array(n, t, hwtype, m, p) where the module parameter refers to a hardware setting hwtype specifies the type of the resource being configured. This can be one of: ioport Module parameter configures an I/O port iomem Module parameter configures an I/O mem address ioport_or_iomem Module parameter could be either (runtime set) irq Module parameter configures an I/O port dma Module parameter configures a DMA channel dma_addr Module parameter configures a DMA buffer address other Module parameter configures some other value Note that the hwtype is compile checked, but not currently stored (the lockdown code probably won't require it). It is, however, there for future use. A bonus is that the hwtype can also be used for grepping. The intention is for the kernel to ignore or reject attempts to set annotated module parameters if lockdown is enabled. This applies to options passed on the boot command line, passed to insmod/modprobe or direct twiddling in /sys/module/ parameter files. The module initialisation then needs to handle the parameter not being set, by (1) giving an error, (2) probing for a value or (3) using a reasonable default. What I can't do is just reject a module out of hand because it may take a hardware setting in the module parameters. Some important modules, some ipmi stuff for instance, both probe for hardware and allow hardware to be manually specified; if the driver is aborts with any error, you don't get any ipmi hardware. Further, trying to do this entirely in the module initialisation code doesn't protect against sysfs twiddling. [!] Note that in and of itself, this series of patches should have no effect on the the size of the kernel or code execution - that is left to a patch in the next series to effect. It does mark annotated kernel parameters with a KERNEL_PARAM_FL_HWPARAM flag in an already existing field" * tag 'hwparam-20170420' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs: (38 commits) Annotate hardware config module parameters in sound/pci/ Annotate hardware config module parameters in sound/oss/ Annotate hardware config module parameters in sound/isa/ Annotate hardware config module parameters in sound/drivers/ Annotate hardware config module parameters in fs/pstore/ Annotate hardware config module parameters in drivers/watchdog/ Annotate hardware config module parameters in drivers/video/ Annotate hardware config module parameters in drivers/tty/ Annotate hardware config module parameters in drivers/staging/vme/ Annotate hardware config module parameters in drivers/staging/speakup/ Annotate hardware config module parameters in drivers/staging/media/ Annotate hardware config module parameters in drivers/scsi/ Annotate hardware config module parameters in drivers/pcmcia/ Annotate hardware config module parameters in drivers/pci/hotplug/ Annotate hardware config module parameters in drivers/parport/ Annotate hardware config module parameters in drivers/net/wireless/ Annotate hardware config module parameters in drivers/net/wan/ Annotate hardware config module parameters in drivers/net/irda/ Annotate hardware config module parameters in drivers/net/hamradio/ Annotate hardware config module parameters in drivers/net/ethernet/ ...
2017-04-20Annotate hardware config module parameters in sound/isa/David Howells
When the kernel is running in secure boot mode, we lock down the kernel to prevent userspace from modifying the running kernel image. Whilst this includes prohibiting access to things like /dev/mem, it must also prevent access by means of configuring driver modules in such a way as to cause a device to access or modify the kernel image. To this end, annotate module_param* statements that refer to hardware configuration and indicate for future reference what type of parameter they specify. The parameter parser in the core sees this information and can skip such parameters with an error message if the kernel is locked down. The module initialisation then runs as normal, but just sees whatever the default values for those parameters is. Note that we do still need to do the module initialisation because some drivers have viable defaults set in case parameters aren't specified and some drivers support automatic configuration (e.g. PNP or PCI) in addition to manually coded parameters. This patch annotates drivers in sound/isa/. Suggested-by: Alan Cox <gnomes@lxorguk.ukuu.org.uk> Signed-off-by: David Howells <dhowells@redhat.com> cc: Jaroslav Kysela <perex@perex.cz> cc: Takashi Iwai <tiwai@suse.com> cc: alsa-devel@alsa-project.org
2017-03-20ALSA: es1688: Use strcpy() instead of sprintf()Nicolas Iooss
There is no point in using sprintf() without a format string when strcpy() can perform the same operation. Signed-off-by: Nicolas Iooss <nicolas.iooss_linux@m4x.org> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2017-03-02sched/headers: Prepare to move signal wakeup & sigpending methods from ↵Ingo Molnar
<linux/sched.h> into <linux/sched/signal.h> Fix up affected files that include this signal functionality via sched.h. Acked-by: Linus Torvalds <torvalds@linux-foundation.org> Cc: Mike Galbraith <efault@gmx.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linux-kernel@vger.kernel.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
2017-01-12ALSA: isa: Constify snd_rawmidi_opsTakashi Iwai
Now snd_rawmidi_ops is maintained as a const pointer in snd_rawmidi, we can constify the definitions. Reviewed-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2016-06-01ALSA: adlib: Utilize the module_isa_driver macroWilliam Breathitt Gray
This driver does not do anything special in module init/exit. This patch eliminates the module init/exit boilerplate code by utilizing the module_isa_driver macro. Signed-off-by: William Breathitt Gray <vilhelm.gray@gmail.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2016-06-01ALSA: galaxy: Utilize the module_isa_driver macroWilliam Breathitt Gray
This driver does not do anything special in module init/exit. This patch eliminates the module init/exit boilerplate code by utilizing the module_isa_driver macro. Signed-off-by: William Breathitt Gray <vilhelm.gray@gmail.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2016-06-01ALSA: sc6000: Utilize the module_isa_driver macroWilliam Breathitt Gray
This driver does not do anything special in module init/exit. This patch eliminates the module init/exit boilerplate code by utilizing the module_isa_driver macro. Signed-off-by: William Breathitt Gray <vilhelm.gray@gmail.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2016-06-01ALSA: gusclassic: Utilize the module_isa_driver macroWilliam Breathitt Gray
This driver does not do anything special in module init/exit. This patch eliminates the module init/exit boilerplate code by utilizing the module_isa_driver macro. Signed-off-by: William Breathitt Gray <vilhelm.gray@gmail.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2016-06-01ALSA: gusextreme: Utilize the module_isa_driver macroWilliam Breathitt Gray
This driver does not do anything special in module init/exit. This patch eliminates the module init/exit boilerplate code by utilizing the module_isa_driver macro. Signed-off-by: William Breathitt Gray <vilhelm.gray@gmail.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2016-06-01ALSA: gusmax: Utilize the module_isa_driver macroWilliam Breathitt Gray
This driver does not do anything special in module init/exit. This patch eliminates the module init/exit boilerplate code by utilizing the module_isa_driver macro. Signed-off-by: William Breathitt Gray <vilhelm.gray@gmail.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2016-06-01ALSA: cs4231: Utilize the module_isa_driver macroWilliam Breathitt Gray
This driver does not do anything special in module init/exit. This patch eliminates the module init/exit boilerplate code by utilizing the module_isa_driver macro. Signed-off-by: William Breathitt Gray <vilhelm.gray@gmail.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2016-06-01ALSA: cmi8328: Utilize the module_isa_driver macroWilliam Breathitt Gray
This driver does not do anything special in module init/exit. This patch eliminates the module init/exit boilerplate code by utilizing the module_isa_driver macro. Signed-off-by: William Breathitt Gray <vilhelm.gray@gmail.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2016-06-01ALSA: ad1848: Utilize the module_isa_driver macroWilliam Breathitt Gray
This driver does not do anything special in module init/exit. This patch eliminates the module init/exit boilerplate code by utilizing the module_isa_driver macro. Signed-off-by: William Breathitt Gray <vilhelm.gray@gmail.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2016-06-01ALSA: jazz16: Utilize the module_isa_driver macroWilliam Breathitt Gray
This driver does not do anything special in module init/exit. This patch eliminates the module init/exit boilerplate code by utilizing the module_isa_driver macro. Signed-off-by: William Breathitt Gray <vilhelm.gray@gmail.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2016-06-01ALSA: sb8: Utilize the module_isa_driver macroWilliam Breathitt Gray
This driver does not do anything special in module init/exit. This patch eliminates the module init/exit boilerplate code by utilizing the module_isa_driver macro. Signed-off-by: William Breathitt Gray <vilhelm.gray@gmail.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2016-05-08ALSA: isa/wavefront: prevent some out of bound writesDan Carpenter
"header->number" can be up to USHRT_MAX and it comes from the ioctl so it needs to be capped. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2016-04-11ALSA: sscape: Use correct format identifier for size_tWilliam Breathitt Gray
The 'size' member of a struct firmware is passed to snd_printk with a respective format string using the %d identifier. The 'size' member is of type size_t, but format identifier %d indicates a signed int data type. This patch replaces the %d format identifier with the correct %zu format identifier for size_t data types. Signed-off-by: William Breathitt Gray <vilhelm.gray@gmail.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2016-01-27ALSA: Add missing dependency on CONFIG_SND_TIMERTakashi Iwai
Since the build of PCM timer may be disabled via Kconfig now, each driver that provides a timer interface needs to set CONFIG_SND_TIMER explicitly. Otherwise it may get a build error due to missing symbol. Fixes: 90bbaf66ee7b ('ALSA: timer: add config item to export PCM timer disabling for expert') Reported-by: kbuild test robot <fengguang.wu@intel.com> Cc: <stable@vger.kernel.org> # v4.4+ Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-06-12ALSA: gus: use swap() in snd_ics_put_double()Fabian Frederick
Use kernel.h macro definition. Thanks to Julia Lawall for Coccinelle scripting support. Signed-off-by: Fabian Frederick <fabf@skynet.be> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-03-24sound: Deparenthesize negative error returnsJoe Perches
Make the returns a bit more kernel standard style. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-03-09Merge branch 'for-linus' into for-nextTakashi Iwai
Merging the HD-audio fixes back to base devel branch for further working on it.
2015-03-05ALSA: msnd: add some missing curly bracesDan Carpenter
There were some curly braces intended here. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-02-12ALSA: seq: Define driver object in each driverTakashi Iwai
This patch moves the driver object initialization and allocation to each driver's module init/exit code like other normal drivers. The snd_seq_driver struct is now published in seq_device.h, and each driver is responsible to define it with proper driver attributes (name, probe and remove) with snd_seq_driver specific attributes as id and argsize fields. The helper functions snd_seq_driver_register(), snd_seq_driver_unregister() and module_snd_seq_driver() are used for simplifying codes. Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-01-28ALSA: Include linux/uaccess.h and linux/bitopts.h instead of asm/*Takashi Iwai
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-01-28ALSA: Include linux/io.h instead of asm/io.hTakashi Iwai
Nowadays it's recommended. Replace all in a shot. Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-01-28ALSA: sscape: add missing include of linux/io.hArnd Bergmann
The soundscape driver uses the ISA inb/outb functions declared in linux/io.h, so it needs to include this header to avoid a build error: sscape.c: In function 'sscape_write_unsafe': sscape.c:203:2: error: implicit declaration of function 'outb' [-Werror=implicit-function-declaration] Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-01-19ALSA: wavefront: Use setup_timer() and mod_timer()Takashi Iwai
No functional change, refactoring with the standard helpers. Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-01-19ALSA: sb: Use setup_timer() and mod_timer()Takashi Iwai
No functional change, refactoring with the standard helpers. Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-01-12ALSA: log emu8000 DRAM size at level INFODavid Flater
Detected sound font memory goes unreported unless the kernel was built with ALSA debugging enabled. Elevate that to a pr_info. Signed-off-by: David Flater <dave@flaterco.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-01-12ALSA: fix emu8000 DRAM sizing for AWE64 ValueDavid Flater
Applicable to any kernel since 2013: The special case added in commit 1338fc97d07a did not handle the possibility that the address space on an AWE64 Value would wrap around at 512 KiB. That is what it does, so the memory is still not detected on those cards. Fix that with a logic clean-up that eliminates the need for a special case. Signed-off-by: David Flater <dave@flaterco.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-01-04ALSA: Deletion of checks before the function call "iounmap"Markus Elfring
The iounmap() function performs also input parameter validation. Thus the test around the call is not needed. This issue was detected by using the Coccinelle software. Signed-off-by: Markus Elfring <elfring@users.sourceforge.net> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-01-04ALSA: sb: Delete an unnecessary check before the function call "snd_emux_free"Markus Elfring
The snd_emux_free() function tests whether its argument is NULL and then returns immediately. Thus the test around the call is not needed. This issue was detected by using the Coccinelle software. Signed-off-by: Markus Elfring <elfring@users.sourceforge.net> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-01-02ALSA: wss: Remove (almost) always NULL parametersLars-Peter Clausen
Most callers of snd_wss_pcm(), snd_wss_timer() and snd_cs4236_pcm() pass NULL as the last parameter, some callers pass a pointer but never use it after the function has been called and only a few callers pass a pointer and actually use it. The later is only the case for snd_wss_pcm() for snd_cs4236_pcm() and it is possible to get the same PCM object by accessing the pcm field of the snd_wss struct that was passed as the first parameter. This function removes the last parameters from the functions mentioned above and updates the callers which used it to use chip->pcm instead. This allows us to slightly simplify the functions since they don't have to check and set the last parameter anymore which makes the code slightly shorter and cleaner. Signed-off-by: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-01-02ASoC: sb16: Simplify snd_sb16dsp_pcm()Lars-Peter Clausen
All callers of snd_sb16dsp_pcm() always pass the pcm field of the first parameter as the last parameter. Simplify the function by moving this inside the function itself. This makes the code a bit shorter and cleaner. Signed-off-by: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-01-02ALSA: sb8: Remove always NULL parametersLars-Peter Clausen
snd_sb8dsp_pcm() and snd_sb8dsp_midi() take a pointer to a pointer of a PCM/MIDI where if this parameter is provided the newly allocated object is stored. All callers pass NULL though, so remove the parameter. This makes the code a bit cleaner and shorter. Signed-off-by: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-01-02ALSA: msnd: Remove always NULL parameterLars-Peter Clausen
snd_msnd_pcm() takes a pointer to a pointer of a PCM where if this parameter is provided the newly allocated PCM is stored. All callers pass NULL though, so remove the parameter. This makes the code a bit cleaner and shorter. Signed-off-by: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-01-02ALSA: gus: Remove always NULL parametersLars-Peter Clausen
snd_gf1_pcm_new() and snd_gf1_rawmidi_new() take a pointer to a pointer of a PCM/MIDI where if this parameter is provided the newly allocated object is stored. All callers pass NULL though, so remove the parameter. This makes the code a bit cleaner and shorter. Signed-off-by: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-01-02ALSA: es18xx: Remove always NULL parameterLars-Peter Clausen
snd_es18xx_pcm() takes a pointer to a pointer of a PCM where if this parameter is provided the newly allocated PCM is stored. All callers pass NULL though, so remove the parameter. This makes the code a bit cleaner and shorter. Signed-off-by: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-01-02ALSA: es1688: Remove almost always NULL parameterLars-Peter Clausen
snd_es1688_pcm() takes a pointer to a pointer of a PCM where if this parameter is provided the newly allocated PCM is stored. This PCM is also available from the pcm field of the snd_es1688 struct that got passed to the same function. This patch updates all callers which passed a pointer to use that field instead and then removes the parameter from the function. This makes the code a bit shorter and cleaner. Signed-off-by: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-01-02ALSA: ad1816a: Remove always NULL parametersLars-Peter Clausen
snd_ad1816a_pcm() and snd_ad1816a_timer() take a pointer to a pointer of a PCM/timer where if this parameter is provided the newly allocated object is stored. All callers pass NULL though, so remove the parameter. This makes the code a bit cleaner and shorter. Signed-off-by: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2014-12-26ALSA: gus: Remove unused gus_instr.cTakashi Iwai
The instrument layer codes have been dropped years ago, but this file was left intentionally with a slight hope for the new implementations. But, looking at the reality, the probability we'll have a new code for ISA GUS board is very low, and I won't bet it. So, rather clean this legacy stuff up. Developers can still refer to the old code via git history. Reported-by: Rickard Strandqvist <rickard_strandqvist@spectrumdigital.se> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2014-11-21ALSA: sb: Deletion of unnecessary checks before two function callsMarkus Elfring
The functions release_and_free_resource() and snd_util_memhdr_free() test whether their argument is NULL and then return immediately. Thus the test around the call is not needed. This issue was detected by using the Coccinelle software. Signed-off-by: Markus Elfring <elfring@users.sourceforge.net> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2014-11-21ALSA: es1688_lib: Deletion of an unnecessary check before the function call ↵Markus Elfring
"release_and_free_resource" The release_and_free_resource() function tests whether its argument is NULL and then returns immediately. Thus the test around the call is not needed. This issue was detected by using the Coccinelle software. Signed-off-by: Markus Elfring <elfring@users.sourceforge.net> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2014-11-04ALSA: es18xx: Add GPO controlsOndrej Zary
Add GPO0 and GPO1 (General Purpose Outputs) controls to mixer. These can be used on some cards to control amplifier mute (seen in ES1868 datasheet) or additional onboard chips such as QX2130 QXpander processor. These GPOs are present on ES1868, ES1869, ES1887 and ES1888 chips. Tested on ES1868 with QX2130. Signed-off-by: Ondrej Zary <linux@rainbow-software.org> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2014-10-21ALSA: wss: Use snd_ctl_enum_info()Takashi Iwai
... and reduce the open codes. Also add missing const to text arrays. Signed-off-by: Takashi Iwai <tiwai@suse.de>
2014-10-21ALSA: sb16: Use snd_ctl_enum_info()Takashi Iwai
... and reduce the open codes. Also add missing const to text arrays. Signed-off-by: Takashi Iwai <tiwai@suse.de>
2014-10-21ALSA: msnd: Use snd_ctl_enum_info()Takashi Iwai
... and reduce the open codes. Also add missing const to the text array. Signed-off-by: Takashi Iwai <tiwai@suse.de>
2014-10-21ALSA: es18xx: Use snd_ctl_enum_info()Takashi Iwai
... and reduce the open codes. Also add missing const to text arrays. Signed-off-by: Takashi Iwai <tiwai@suse.de>
2014-10-21ALSA: es1688: Use snd_ctl_enum_info()Takashi Iwai
... and reduce the open codes. Also correct the array size and add missing const. Signed-off-by: Takashi Iwai <tiwai@suse.de>