linux-stable/sound
Takashi Sakamoto e4f34cf6d5 Revert "ALSA: firewire-lib: change structure member with proper type"
This reverts commit 6b7e95d133. This commit
is based on a concern about value of the given parameter. It's expected
to be ORed value with some enumeration-constants, thus often it can not be
one of the enumeration-constants. I understood that this is out of
specification and causes implementation-dependent issues.

In C language specification, enumerated type can be interpreted as an
integer type, in which all of enumeration-constants in corresponding
enumerator-list can be stored. Implementations can select one of char,
signed int and unsigned int as its type, and this selection is
implementation-dependent.

In GCC, a signed integer is selected when at least one of
enumeration-constants has negative value, else an unsigned integer is
selected. This behaviour can be switched by -fshort-enums to short type.
Anyway, the type can be decided after scanning all of
enumeration-constants.

Totally, there's no rules to constrain the value of enumerated type to
be one of enumeration-constants. In short, in enumerated type, decision
of actual type for the type is the most important and
enumeration-constants are just used for the decision, thus it's permitted
to have an integer value in a range of enumeration-constants. In our case,
actual type for the type is currently deterministic to be either char or
unsigned int. Under GCC, it's unsigned int.

Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2017-01-05 08:39:47 +01:00
..
aoa powerpc updates for 4.9 2016-10-07 20:19:31 -07:00
arm ALSA: arm: Fix empty menuconfig SND_ARM 2016-08-01 16:07:53 +02:00
atmel
core ktime: Get rid of the union 2016-12-25 17:21:22 +01:00
drivers ktime: Cleanup ktime_set() usage 2016-12-25 17:21:22 +01:00
firewire Revert "ALSA: firewire-lib: change structure member with proper type" 2017-01-05 08:39:47 +01:00
hda clocksource: Use a plain u64 instead of cycle_t 2016-12-25 11:04:12 +01:00
i2c ALSA: ak4114: remove redundant check on err being < 0 2016-07-12 12:28:04 +02:00
isa ALSA: adlib: Utilize the module_isa_driver macro 2016-06-01 07:35:52 +02:00
mips
oss Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
parisc
pci ALSA: hda - Apply asus-mode8 fixup to ASUS X71SL 2017-01-04 21:38:16 +01:00
pcmcia
ppc powerpc updates for 4.9 2016-10-07 20:19:31 -07:00
sh ktime: Cleanup ktime_set() usage 2016-12-25 17:21:22 +01:00
soc sound updates for 4.10-rc1 2016-12-14 11:14:28 -08:00
sparc dbri: move dereference after check for NULL 2016-12-06 12:18:22 -05:00
spi
synth
usb ALSA: usb-audio: test EP_FLAG_RUNNING at urb completion 2017-01-05 07:35:17 +01:00
ac97_bus.c
Kconfig
last.c
Makefile sound: oss: Use kernel_read_file_from_path() for mod_firmware_load() 2016-07-26 10:38:03 +02:00
sound_core.c