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71546300c8
linux/drivers
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Lars-Peter Clausen 71546300c8 i2c: Make return type of i2c_del_adapter() void 
i2c_del_adapter() is usually called from a drivers remove callback. The Linux
device driver model does not allow the remove callback to fail and all resources
allocated in the probe callback need to be freed, as well as all resources which
have been provided to the rest of the kernel(for example a I2C adapter) need to
be revoked. So any function revoking such resources isn't allowed to fail
either. i2c_del_adapter() adheres to this requirement and will never fail. But
i2c_del_adapter()'s return type is int, which may cause driver authors to think
that it can fail. This led to code constructs like:

	ret = i2c_del_adapter(...);
	BUG_ON(ret);

Since i2c_del_adapter() always returns 0 the BUG_ON is never hit and essentially
becomes dead code, which means it can be removed. Making the return type of
i2c_del_adapter() void makes it explicit that the function will never fail and
should prevent constructs like the above from re-appearing in the kernel code.

All callers of i2c_del_adapter() have already been updated in a previous patch
to ignore the return value, so the conversion of the return type from int to
void can be done without causing any build failures.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Reviewed-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2013-04-02 07:06:17 +02:00
..
accessibility
acpi Fixes: 2013-03-12 20:25:53 -07:00
amba ARM: 7675/1: amba: tegra-ahb: Fix build error w/ PM_SLEEP w/o PM_RUNTIME 2013-03-15 17:20:02 +00:00
ata Simple stuff. See one-line summaries. 2013-03-23 12:33:36 -07:00
atm hlist: drop the node parameter from iterators 2013-02-27 19:10:24 -08:00
auxdisplay
base ACPI and power management fixes for 3.9-rc2 2013-03-07 14:54:28 -08:00
bcma Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless into for-davem 2013-03-01 13:52:03 -05:00
block Merge git://git.infradead.org/users/willy/linux-nvme 2013-03-22 16:43:53 -07:00
bluetooth Merge branch 'for-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth 2013-03-13 13:29:56 -04:00
bus
cdrom
char Simple virtio-rng fix. 2013-03-12 20:28:45 -07:00
clk clk: vt8500: Fix "fix device clock divisor calculations" 2013-03-14 22:34:26 +01:00
clocksource ImgTec Meta architecture changes for v3.9-rc1 2013-03-03 12:06:09 -08:00
connector proc connector: reject unprivileged listener bumps 2013-02-27 13:08:35 -05:00
cpufreq cpufreq / intel_pstate: Do not load on VM that does not report max P state. 2013-03-06 23:40:11 +01:00
cpuidle arm-soc: soc-specific updates 2013-02-21 15:27:22 -08:00
crypto Merge git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 2013-02-25 15:56:15 -08:00
dca dca: convert to idr_alloc() 2013-02-27 19:10:15 -08:00
devfreq
dio
dma Merge branch 'next' of git://git.infradead.org/users/vkoul/slave-dma 2013-03-03 10:20:22 -08:00
edac EDAC: Merge mci.mem_is_per_rank with mci.csbased 2013-03-16 06:32:30 +01:00
eisa
extcon Char/Misc driver patches for 3.9-rc1 2013-02-21 13:57:13 -08:00
firewire firewire: convert to idr_alloc() 2013-02-27 19:10:15 -08:00
firmware Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace 2013-03-09 16:51:13 -08:00
gpio Two patches for Device Tree on at91sam9x5/NAND. 2013-03-14 23:55:59 +01:00
gpu i2c: Ignore return value of i2c_del_adapter() 2013-04-02 07:06:03 +02:00
hid Merge branch 'for-3.9/upstream-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid 2013-03-08 14:42:52 -08:00
hsi hsi: fix kernel-doc warnings 2013-03-01 13:39:00 -08:00
hv Drivers: hv: vmbus: Use the new infrastructure for delivering VMBUS interrupts 2013-02-27 10:15:53 -08:00
hwmon hwmon: (lm75.h) Update header inclusion 2013-03-18 21:19:49 +01:00
hwspinlock
i2c i2c: Make return type of i2c_del_adapter() void 2013-04-02 07:06:17 +02:00
ide Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2013-02-26 20:16:07 -08:00
idle Merge branch 'core-locking-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2013-02-22 19:25:09 -08:00
iio First round of iio fixes post the 3.9 merge window. 2013-03-06 05:48:24 +08:00
infiniband Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2013-03-19 13:20:51 -07:00
input arm-soc: bug fixes for 3.9-rc3 2013-03-18 08:17:14 -07:00
iommu iommu, x86: Add DMA remap fault reason 2013-03-06 09:41:51 +01:00
ipack Char/Misc driver patches for 3.9-rc1 2013-02-21 13:57:13 -08:00
irqchip irqchip: fix typo when moving gic_raise_softirq() 2013-03-04 17:15:33 -08:00
isdn isdn: hisax: netjet requires VIRT_TO_BUS 2013-03-17 12:01:10 -04:00
leds Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/cooloney/linux-leds 2013-02-26 09:29:02 -08:00
lguest All trivial, thanks to the stuff which didn't quite make it time. 2013-02-26 14:49:12 -08:00
macintosh Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc 2013-02-23 17:09:55 -08:00
mailbox mailbox, pl320-ipc: remove __init from probe function 2013-03-04 14:23:11 +01:00
md A few bugfixes for md 2013-03-23 15:49:49 -07:00
media i2c: Ignore return value of i2c_del_adapter() 2013-04-02 07:06:03 +02:00
memory
memstick memstick: move the dereference below the NULL test 2013-02-27 19:10:23 -08:00
message
mfd mfd: twl4030-madc: Remove __exit_p annotation 2013-03-15 07:42:22 +01:00
misc fs: Limit sys_mount to only request filesystem modules. 2013-03-03 19:36:31 -08:00
mmc Merge branches 'devel-stable', 'fixes' and 'mmci' into for-linus 2013-03-03 00:32:50 +00:00
mtd MTD fixes for 3.9 2013-03-18 08:27:41 -07:00
net i2c: Ignore return value of i2c_del_adapter() 2013-04-02 07:06:03 +02:00
nfc
ntb
nubus
of Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2013-02-21 17:40:58 -08:00
oprofile fs: Limit sys_mount to only request filesystem modules. 2013-03-03 19:36:31 -08:00
parisc Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2013-02-26 20:16:07 -08:00
parport Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux 2013-02-21 17:54:03 -08:00
pci PCI: Use ROM images from firmware only if no other ROM source available 2013-03-19 14:51:14 -07:00
pcmcia Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2013-02-21 17:40:58 -08:00
pinctrl ARM: at91: add gpio suspend/resume support when using pinctrl 2013-03-14 09:37:42 +01:00
platform Platform: x86: chromeos_laptop : Add basic platform data for atmel devices 2013-03-08 16:03:29 -08:00
pnp ACPI / glue: Add .match() callback to struct acpi_bus_type 2013-03-04 14:23:40 +01:00
power power: convert to idr_alloc() 2013-02-27 19:10:18 -08:00
pps drivers/pps/clients/pps-gpio.c: use devm_kzalloc 2013-02-27 19:10:23 -08:00
ps3
ptp
pwm pwm: Changes for v3.9-rc1 2013-02-26 09:34:29 -08:00
rapidio
regulator Merge remote-tracking branch 'regulator/fix/twl' into tmp 2013-03-05 10:12:43 +08:00
remoteproc remoteproc: convert to idr_alloc() 2013-02-27 19:10:18 -08:00
rpmsg rpmsg: convert to idr_alloc() 2013-02-27 19:10:18 -08:00
rtc drivers/rtc/rtc-at91rm9200.c: use a variable for storing IMR 2013-03-22 16:41:20 -07:00
s390 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2013-03-19 13:20:51 -07:00
sbus Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2013-02-26 20:16:07 -08:00
scsi ACPI / glue: Add .match() callback to struct acpi_bus_type 2013-03-04 14:23:40 +01:00
sfi
sh
sn
spi arm-soc: soc-specific updates 2013-02-21 15:27:22 -08:00
ssb Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux into mips-for-linux-next 2013-02-22 10:07:30 +01:00
staging i2c: Ignore return value of i2c_del_adapter() 2013-04-02 07:06:03 +02:00
target target/pscsi: Reject cross page boundary case in pscsi_map_sg 2013-03-19 17:31:14 -07:00
tc
thermal thermal: exynos_thermal: return a proper error code while thermal_zone_device_register fail. 2013-03-11 23:09:29 +08:00
tty Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc 2013-03-19 14:47:11 -07:00
uio uio: convert to idr_alloc() 2013-02-27 19:10:19 -08:00
usb USB: ti_usb_3410_5052: fix use-after-free in TIOCMIWAIT 2013-03-21 15:59:05 -07:00
uwb
vfio vfio: include <linux/slab.h> for kmalloc 2013-03-15 12:58:20 -06:00
vhost Merge git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending 2013-03-23 16:51:55 -07:00
video drivers/video/ep93xx-fb.c: include <linux/io.h> for devm_ioremap() 2013-03-22 16:41:20 -07:00
virt
virtio All trivial, thanks to the stuff which didn't quite make it time. 2013-02-26 14:49:12 -08:00
vlynq
vme
w1 w1: fix oops when w1_search is called from netlink connector 2013-03-12 16:20:46 -07:00
watchdog watchdog: sp5100_tco: Set the AcpiMmioSel bitmask value to 1 instead of 2 2013-03-22 23:21:55 +01:00
xen Fixes: 2013-03-12 20:25:53 -07:00
zorro new helper: file_inode(file) 2013-02-22 23:31:31 -05:00
Kconfig Char/Misc driver patches for 3.9-rc1 2013-02-21 13:57:13 -08:00
Makefile Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc 2013-02-23 17:09:55 -08:00