The kernel.h macro DIV_ROUND_UP performs the computation (((n) + (d) - 1) /
(d)) but is perhaps more readable.
An extract of the semantic patch that makes this change is as follows:
(http://www.emn.fr/x-info/coccinelle/)
// <smpl>
@haskernel@
@@
#include <linux/kernel.h>
@depends on haskernel@
expression n,d;
@@
(
- (n + d - 1) / d
+ DIV_ROUND_UP(n,d)
|
- (n + (d - 1)) / d
+ DIV_ROUND_UP(n,d)
)
@depends on haskernel@
expression n,d;
@@
- DIV_ROUND_UP((n),d)
+ DIV_ROUND_UP(n,d)
@depends on haskernel@
expression n,d;
@@
- DIV_ROUND_UP(n,(d))
+ DIV_ROUND_UP(n,d)
// </smpl>
Signed-off-by: Julia Lawall <julia@diku.dk>
Cc: "Antonino A. Daplas" <adaplas@pol.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Currently, if a perfect match in terms of resolution is not found,
fb_find_mode() only looks for a best-fit mode among modes with a higher
resolution than the one requested. Thus, if the user requests a resolution
higher than the largest supported one, they are dropped to the default mode
(usually a low resolution one).
Change this behaviour so that all valid video modes are considered when
looking for a best-fit mode, while still preferring modes with a higher
resolution.
Signed-off-by: Michal Januszewski <spock@gentoo.org>
Cc: Krzysztof Helt <krzysztof.h1@poczta.fm>
Cc: "Antonino A. Daplas" <adaplas@pol.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Add a new function gpiochip_reserve() to reserve ranges of gpios that platform
code has pre-allocated. That is, this marks gpio numbers which will be
claimed by drivers that haven't yet been loaded, and thus are not available
for dynamic gpio number allocation.
[akpm@linux-foundation.org: remove unneeded __must_check]
[david-b@pacbell.net: don't export gpiochip_reserve (section fix)]
Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
If gpio_chip->base is negative during registration, gpiolib performs dynamic
base allocation. This is useful for devices that aren't always present, such
as GPIOs on hotplugged devices rather than mainboards. (This behavior was
previously specified but not implemented.)
To avoid using any numbers that may have been explicitly assigned but not yet
registered, this dynamic allocation assigns GPIO numbers from the biggest
number on down, instead of from the smallest on up.
Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
As long as one or more GPIOs on a gpio chip are used its driver should not be
unloaded. The existing mechanism (gpiochip_remove failure) doesn't address
that, since rmmod can no longer be made to fail by having the cleanup code
report errors. Module usecounts are the solution.
Assuming standard "initialize struct to zero" policies, this change won't
affect SOC platform drivers. However, drivers for external chips (on I2C and
SPI busses) should be updated if they can be built as modules.
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@pengutronix.de>
[ gpio_ensure_requested() needs to update module usecounts too ]
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
drivers/isdn/hardware/eicon/message.c:745:47: warning: Using plain integer as NULL pointer
drivers/isdn/hardware/eicon/message.c:761:45: warning: Using plain integer as NULL pointer
drivers/isdn/hardware/eicon/message.c:9122:16: warning: Using plain integer as NULL pointer
drivers/isdn/hardware/eicon/message.c:9147:16: warning: Using plain integer as NULL pointer
drivers/isdn/hardware/eicon/message.c:9173:14: warning: Using plain integer as NULL pointer
drivers/isdn/hardware/eicon/divasmain.c:396:23: warning: Using plain integer as NULL pointer
Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Cc: Karsten Keil <kkeil@suse.de>
Cc: Jeff Garzik <jeff@garzik.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
drivers/isdn/hardware/avm/b1isa.c:206:37: warning: Using plain integer as NULL pointer
drivers/isdn/hardware/avm/b1isa.c:208:33: warning: Using plain integer as NULL pointer
drivers/isdn/hardware/avm/b1.c:664:42: warning: Using plain integer as NULL pointer
drivers/isdn/hardware/avm/b1.c:666:44: warning: Using plain integer as NULL pointer
drivers/isdn/hardware/avm/b1.c:668:42: warning: Using plain integer as NULL pointer
drivers/isdn/hardware/avm/b1.c:791:37: warning: Using plain integer as NULL pointer
drivers/isdn/hardware/avm/b1.c:793:33: warning: Using plain integer as NULL pointer
drivers/isdn/hardware/avm/b1pci.c:385:37: warning: Using plain integer as NULL pointer
drivers/isdn/hardware/avm/b1pci.c:387:33: warning: Using plain integer as NULL pointer
drivers/isdn/hardware/avm/b1dma.c:886:42: warning: Using plain integer as NULL pointer
drivers/isdn/hardware/avm/b1dma.c:888:44: warning: Using plain integer as NULL pointer
drivers/isdn/hardware/avm/b1dma.c:890:42: warning: Using plain integer as NULL pointer
drivers/isdn/hardware/avm/b1dma.c:973:37: warning: Using plain integer as NULL pointer
drivers/isdn/hardware/avm/b1dma.c:975:33: warning: Using plain integer as NULL pointer
drivers/isdn/hardware/avm/b1pcmcia.c:204:37: warning: Using plain integer as NULL pointer
drivers/isdn/hardware/avm/b1pcmcia.c:206:33: warning: Using plain integer as NULL pointer
drivers/isdn/hardware/avm/t1isa.c:554:37: warning: Using plain integer as NULL pointer
drivers/isdn/hardware/avm/t1isa.c:556:33: warning: Using plain integer as NULL pointer
drivers/isdn/hardware/avm/t1pci.c:236:37: warning: Using plain integer as NULL pointer
drivers/isdn/hardware/avm/t1pci.c:238:33: warning: Using plain integer as NULL pointer
drivers/isdn/hardware/avm/c4.c:1091:42: warning: Using plain integer as NULL pointer
drivers/isdn/hardware/avm/c4.c:1093:44: warning: Using plain integer as NULL pointer
drivers/isdn/hardware/avm/c4.c:1095:42: warning: Using plain integer as NULL pointer
drivers/isdn/hardware/avm/c4.c:1170:21: warning: Using plain integer as NULL pointer
drivers/isdn/hardware/avm/c4.c:1294:37: warning: Using plain integer as NULL pointer
drivers/isdn/hardware/avm/c4.c:1296:33: warning: Using plain integer as NULL pointer
Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Cc: Karsten Keil <kkeil@suse.de>
Cc: Jeff Garzik <jeff@garzik.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
drivers/isdn/capi/kcapi.c:829:30: warning: Using plain integer as NULL pointer
drivers/isdn/capi/kcapi.c:838:27: warning: Using plain integer as NULL pointer
drivers/isdn/capi/kcapi.c:954:17: warning: Using plain integer as NULL pointer
drivers/isdn/capi/kcapi.c:1007:37: warning: Using plain integer as NULL pointer
drivers/isdn/capi/kcapi.c:1009:33: warning: Using plain integer as NULL pointer
drivers/isdn/capi/capiutil.c:453:24: warning: Using plain integer as NULL pointer
drivers/isdn/capi/capilib.c:47:30: warning: Using plain integer as NULL pointer
drivers/isdn/capi/capi.c:353:29: warning: Using plain integer as NULL pointer
drivers/isdn/capi/capi.c:369:15: warning: Using plain integer as NULL pointer
drivers/isdn/capi/capi.c:486:48: warning: Using plain integer as NULL pointer
drivers/isdn/capi/capi.c:515:46: warning: Using plain integer as NULL pointer
drivers/isdn/capi/capi.c:541:47: warning: Using plain integer as NULL pointer
drivers/isdn/capi/capi.c:692:47: warning: Using plain integer as NULL pointer
drivers/isdn/capi/capi.c:699:49: warning: Using plain integer as NULL pointer
drivers/isdn/capi/capi.c:704:14: warning: Using plain integer as NULL pointer
drivers/isdn/capi/capi.c:943:53: warning: Using plain integer as NULL pointer
drivers/isdn/capi/capi.c:948:32: warning: Using plain integer as NULL pointer
drivers/isdn/capi/capi.c:969:42: warning: Using plain integer as NULL pointer
drivers/isdn/capi/capi.c:989:48: warning: Using plain integer as NULL pointer
drivers/isdn/capi/capi.c:1026:69: warning: Using plain integer as NULL pointer
drivers/isdn/capi/capi.c:1028:19: warning: Using plain integer as NULL pointer
drivers/isdn/capi/capi.c:1061:20: warning: Using plain integer as NULL pointer
drivers/isdn/capi/capi.c:1529:37: warning: Using plain integer as NULL pointer
drivers/isdn/capi/capi.c:1531:33: warning: Using plain integer as NULL pointer
drivers/isdn/capi/capidrv.c:338:15: warning: Using plain integer as NULL pointer
drivers/isdn/capi/capidrv.c:758:32: warning: Using plain integer as NULL pointer
drivers/isdn/capi/capidrv.c:880:40: warning: Using plain integer as NULL pointer
drivers/isdn/capi/capidrv.c:407:15: warning: Using plain integer as NULL pointer
drivers/isdn/capi/capidrv.c:429:49: warning: Using plain integer as NULL pointer
drivers/isdn/capi/capidrv.c:407:15: warning: Using plain integer as NULL pointer
drivers/isdn/capi/capidrv.c:444:49: warning: Using plain integer as NULL pointer
drivers/isdn/capi/capidrv.c:429:49: warning: Using plain integer as NULL pointer
drivers/isdn/capi/capidrv.c:429:49: warning: Using plain integer as NULL pointer
drivers/isdn/capi/capidrv.c:429:49: warning: Using plain integer as NULL pointer
drivers/isdn/capi/capidrv.c:429:49: warning: Using plain integer as NULL pointer
drivers/isdn/capi/capidrv.c:429:49: warning: Using plain integer as NULL pointer
drivers/isdn/capi/capidrv.c:1664:61: warning: Using plain integer as NULL pointer
drivers/isdn/capi/capidrv.c:1969:37: warning: Using plain integer as NULL pointer
drivers/isdn/capi/capidrv.c:2294:37: warning: Using plain integer as NULL pointer
drivers/isdn/capi/capidrv.c:2297:33: warning: Using plain integer as NULL pointer
drivers/isdn/capi/capidrv.c:2338:37: warning: Using plain integer as NULL pointer
drivers/isdn/capi/capidrv.c:2341:33: warning: Using plain integer as NULL pointer
drivers/isdn/capi/capifs.c:192:37: warning: Using plain integer as NULL pointer
drivers/isdn/capi/capifs.c:194:33: warning: Using plain integer as NULL pointer
Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Cc: Karsten Keil <kkeil@suse.de>
Cc: Jeff Garzik <jeff@garzik.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Fixes things like this:
fs/super.c: In function `deactivate_super':
fs/super.c:182: warning: statement with no effect
fs/super.c: In function `do_remount_sb':
fs/super.c:644: warning: statement with no effect
Cc: Jan Kara <jack@ucw.cz>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Update ext4 to handle quotaon on remount RW.
[akpm@linux-foundation.org: coding-style fixes]
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Currently, we just turn quotas off on remount of filesystem to read-only
state. The patch below adds necessary framework so that we can turn quotas
off on remount RO but we are able to automatically reenable them again when
filesystem is remounted to RW state. All we need to do is to keep references
to inodes of quota files when remounting RO and using these references to
reenable quotas when remounting RW.
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Cleanups in quota code:
Change __inline__ to inline.
Change some macros to inline functions.
Remove vfs_quota_off_mount() macro.
DQUOT_OFF() should be (0) is CONFIG_QUOTA is disabled.
Move declaration of mark_dquot_dirty and dirty_dquot from quota.h to dquot.c
[akpm@linux-foundation.org: coding-style fixes]
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
