Staging: rtl8192u: Replace printk() with pr_debug() and netdev_dbg().
For dynamic debugging pr_debug() or netdev_dbg (if there is a ponter
to a device net structure) is preferred over printk(), which is the
raw way to print something. Issue found by checkpatch.pl.
Files <asm/string.h> and <asm/errno.h> should not be included directly.
This patch fixes the following checkpatch.pl warnings:
Use #include <linux/errno.h> instead of <asm/errno.h>
Use #include <linux/string.h> instead of <asm/string.h>
Vaishali Thakkar [Fri, 20 Feb 2015 08:48:45 +0000 (14:18 +0530)]
Staging: rtl8723au: Use put_unaligned_le16
Using byte ordering functions and then memcpy() is risky and
prone to hide errors which are hard to track down. So, this
patch introduces the use of function put_unaligned_le16 which
makes the code clear. Here, use of variable tim_bitmap_le
and variable itself is removed. Also, to be compatible with the
changes header file is added too.
Coccinelle is used to do this change and semantic patch used for
this is as follows:
Vatika Harlalka [Thu, 26 Feb 2015 18:17:39 +0000 (23:47 +0530)]
Staging: rtl8188eu: Combine two loops to increase readability
The first loop assigns values to ofdm_index array and the
second checks for boundary conditions. They are combined and
a comment is added to increase clarity.
Vatika Harlalka [Mon, 23 Feb 2015 14:02:38 +0000 (19:32 +0530)]
Staging: rtl8188eu: Changed array and loop construct
This function only required the array from the 14th element
onwards. Therefore, the array size is reduced and the loop
counter is modified so as to start from 0.
Also, the assignment of variable place is redundant as it is
initialized again in the loop.
Vaishali Thakkar [Fri, 20 Feb 2015 08:48:37 +0000 (14:18 +0530)]
Staging: rtl8188eu: Use put_unaligned_le16
Using byte ordering functions and then memcpy() is risky and
prone to hide errors which are hard to track down. So, this
patch introduces the use of function put_unaligned_le16 which
makes the code clear. Here, use of variable tim_bitmap_le
and variable itself is removed. Also, to be compatible with the
changes header file is added too.
Coccinelle is used to do this change and semantic patch used for
this is as follows:
aybuke ozdemir [Wed, 25 Feb 2015 22:10:21 +0000 (00:10 +0200)]
Staging: i2o: Remove unnecessary braces
Brackets were removed from the expression that containing single
statement. Removed following checkpatch.pl warnings:
WARNING: braces {} are not necessary for single statement blocks
Vatika Harlalka [Wed, 18 Feb 2015 18:52:24 +0000 (00:22 +0530)]
Staging: i2o: Remove space after the * in a pointer type variable
This patch is to remove space after the * in pointer type function parameters
in function prototype and definition to follow kernel coding conventions.
According to ether_addr_copy() description and functionality,
all Ethernet addresses should align to the u16 datatype.
The changes were applied using the following coccinelle rule:
Katie Dunne [Thu, 19 Feb 2015 23:43:12 +0000 (15:43 -0800)]
Staging: vt6655: Replace C99 comments with C89
Addresses the checkpatch.pl error:
ERROR: Do not use C99 // comments
Remove an unneeded comment line
Replace C99 comments with C89
Reduce multiple line comments to one line
Shorten comments over 80 line by removing blank space
Melike Yurtoglu [Sun, 22 Feb 2015 10:18:04 +0000 (12:18 +0200)]
Staging: lustre: Deleted space prohibited between function name and open parenthesis
WARNING: space prohibited between function name and open parenthesis '('
Remove unnecessary space between function name and opening parenthesis.
That was found by running checkpatch
aybuke ozdemir [Sat, 21 Feb 2015 20:47:43 +0000 (22:47 +0200)]
Staging: lustre: use kstrtoul() instead of sscanf()
This patch makes checkpatch.pl by fixing the following warning:
WARNING: Prefer kstrto<type> to single variable sscanf.
I used to kstrtoul can convert unsigned long instead of sscanf
aybuke ozdemir [Fri, 20 Feb 2015 21:51:38 +0000 (23:51 +0200)]
Staging: lustre: Edit switch-case indent
This patch fixes indent as the codingStyle
of the kernel recommends in dir.c
Fix checkpatch.pl error:
ERROR: switch and case should be at the same indent.
Removed return keyword from void functions. Removed following checkpatch.pl warnings:
WARNING: void function return statements are not generally useful
Signed-off-by: Gulsah Kose <gulsah.1004@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Removed unnecessary spaces between function name and open parenthesis '('.
Removed following checkpatch.pl warnings:
WARNING: space prohibited between function name and open parenthesis '('
Signed-off-by: Gulsah Kose <gulsah.1004@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Melike Yurtoglu [Fri, 20 Feb 2015 13:23:18 +0000 (15:23 +0200)]
Staging: lustre: lnet: klnds: o2iblnd: Remove intialization of static to 0
ERROR: do not initialise statics to 0 or NULL
checkpatch.pl error in o2iblnd_modparams.c
initial value unassigned static variables are automatically set to zero.
so it is unnecessary to assign the initial value to zero
Tapasweni Pathak [Fri, 20 Feb 2015 13:13:53 +0000 (18:43 +0530)]
staging: emxx_udc: Replace GFP_KERNEL with GFP_ATOMIC
To avoid deadlock, do not call blocking functions with spinlocks held.
Replace GFP_KERNEL with GFP_ATOMIC, as the latter will fail if the pile
doesn't have enough free pages but will not sleep and hence deadlock can
be avoided.
Linus Torvalds [Mon, 23 Feb 2015 02:21:14 +0000 (18:21 -0800)]
Linux 4.0-rc1
.. after extensive statistical analysis of my G+ polling, I've come to
the inescapable conclusion that internet polls are bad.
Big surprise.
But "Hurr durr I'ma sheep" trounced "I like online polls" by a 62-to-38%
margin, in a poll that people weren't even supposed to participate in.
Who can argue with solid numbers like that? 5,796 votes from people who
can't even follow the most basic directions?
In contrast, "v4.0" beat out "v3.20" by a slimmer margin of 56-to-44%,
but with a total of 29,110 votes right now.
Now, arguably, that vote spread is only about 3,200 votes, which is less
than the almost six thousand votes that the "please ignore" poll got, so
it could be considered noise.
Linus Torvalds [Mon, 23 Feb 2015 02:05:13 +0000 (18:05 -0800)]
Merge tag 'ext4_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4
Pull ext4 fixes from Ted Ts'o:
"Ext4 bug fixes.
We also reserved code points for encryption and read-only images (for
which the implementation is mostly just the reserved code point for a
read-only feature :-)"
* tag 'ext4_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4:
ext4: fix indirect punch hole corruption
ext4: ignore journal checksum on remount; don't fail
ext4: remove duplicate remount check for JOURNAL_CHECKSUM change
ext4: fix mmap data corruption in nodelalloc mode when blocksize < pagesize
ext4: support read-only images
ext4: change to use setup_timer() instead of init_timer()
ext4: reserve codepoints used by the ext4 encryption feature
jbd2: complain about descriptor block checksum errors
Linus Torvalds [Mon, 23 Feb 2015 01:42:14 +0000 (17:42 -0800)]
Merge branch 'for-linus-2' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull more vfs updates from Al Viro:
"Assorted stuff from this cycle. The big ones here are multilayer
overlayfs from Miklos and beginning of sorting ->d_inode accesses out
from David"
* 'for-linus-2' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (51 commits)
autofs4 copy_dev_ioctl(): keep the value of ->size we'd used for allocation
procfs: fix race between symlink removals and traversals
debugfs: leave freeing a symlink body until inode eviction
Documentation/filesystems/Locking: ->get_sb() is long gone
trylock_super(): replacement for grab_super_passive()
fanotify: Fix up scripted S_ISDIR/S_ISREG/S_ISLNK conversions
Cachefiles: Fix up scripted S_ISDIR/S_ISREG/S_ISLNK conversions
VFS: (Scripted) Convert S_ISLNK/DIR/REG(dentry->d_inode) to d_is_*(dentry)
SELinux: Use d_is_positive() rather than testing dentry->d_inode
Smack: Use d_is_positive() rather than testing dentry->d_inode
TOMOYO: Use d_is_dir() rather than d_inode and S_ISDIR()
Apparmor: Use d_is_positive/negative() rather than testing dentry->d_inode
Apparmor: mediated_filesystem() should use dentry->d_sb not inode->i_sb
VFS: Split DCACHE_FILE_TYPE into regular and special types
VFS: Add a fallthrough flag for marking virtual dentries
VFS: Add a whiteout dentry type
VFS: Introduce inode-getting helpers for layered/unioned fs environments
Infiniband: Fix potential NULL d_inode dereference
posix_acl: fix reference leaks in posix_acl_create
autofs4: Wrong format for printing dentry
...
Linus Torvalds [Sun, 22 Feb 2015 17:57:16 +0000 (09:57 -0800)]
Merge branch 'fixes' of git://ftp.arm.linux.org.uk/~rmk/linux-arm
Pull ARM fix from Russell King:
"Just one fix this time around. __iommu_alloc_buffer() can cause a
BUG() if dma_alloc_coherent() is called with either __GFP_DMA32 or
__GFP_HIGHMEM set. The patch from Alexandre addresses this"
* 'fixes' of git://ftp.arm.linux.org.uk/~rmk/linux-arm:
ARM: 8305/1: DMA: Fix kzalloc flags in __iommu_alloc_buffer()
Al Viro [Sun, 22 Feb 2015 03:05:11 +0000 (22:05 -0500)]
debugfs: leave freeing a symlink body until inode eviction
As it is, we have debugfs_remove() racing with symlink traversals.
Supply ->evict_inode() and do freeing there - inode will remain
pinned until we are done with the symlink body.
And rip the idiocy with checking if dentry is positive right after
we'd verified debugfs_positive(), which is a stronger check...
Cc: stable@vger.kernel.org Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
trylock_super(): replacement for grab_super_passive()
I've noticed significant locking contention in memory reclaimer around
sb_lock inside grab_super_passive(). Grab_super_passive() is called from
two places: in icache/dcache shrinkers (function super_cache_scan) and
from writeback (function __writeback_inodes_wb). Both are required for
progress in memory allocator.
Grab_super_passive() acquires sb_lock to increment sb->s_count and check
sb->s_instances. It seems sb->s_umount locked for read is enough here:
super-block deactivation always runs under sb->s_umount locked for write.
Protecting super-block itself isn't a problem: in super_cache_scan() sb
is protected by shrinker_rwsem: it cannot be freed if its slab shrinkers
are still active. Inside writeback super-block comes from inode from bdi
writeback list under wb->list_lock.
This patch removes locking sb_lock and checks s_instances under s_umount:
generic_shutdown_super() unlinks it under sb->s_umount locked for write.
New variant is called trylock_super() and since it only locks semaphore,
callers must call up_read(&sb->s_umount) instead of drop_super(sb) when
they're done.
Signed-off-by: Konstantin Khlebnikov <khlebnikov@yandex-team.ru> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
David Howells [Thu, 29 Jan 2015 12:02:36 +0000 (12:02 +0000)]
fanotify: Fix up scripted S_ISDIR/S_ISREG/S_ISLNK conversions
Fanotify probably doesn't want to watch autodirs so make it use d_can_lookup()
rather than d_is_dir() when checking a dir watch and give an error on fake
directories.
Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
David Howells [Thu, 29 Jan 2015 12:02:35 +0000 (12:02 +0000)]
VFS: (Scripted) Convert S_ISLNK/DIR/REG(dentry->d_inode) to d_is_*(dentry)
Convert the following where appropriate:
(1) S_ISLNK(dentry->d_inode) to d_is_symlink(dentry).
(2) S_ISREG(dentry->d_inode) to d_is_reg(dentry).
(3) S_ISDIR(dentry->d_inode) to d_is_dir(dentry). This is actually more
complicated than it appears as some calls should be converted to
d_can_lookup() instead. The difference is whether the directory in
question is a real dir with a ->lookup op or whether it's a fake dir with
a ->d_automount op.
In some circumstances, we can subsume checks for dentry->d_inode not being
NULL into this, provided we the code isn't in a filesystem that expects
d_inode to be NULL if the dirent really *is* negative (ie. if we're going to
use d_inode() rather than d_backing_inode() to get the inode pointer).
Note that the dentry type field may be set to something other than
DCACHE_MISS_TYPE when d_inode is NULL in the case of unionmount, where the VFS
manages the fall-through from a negative dentry to a lower layer. In such a
case, the dentry type of the negative union dentry is set to the same as the
type of the lower dentry.
However, if you know d_inode is not NULL at the call site, then you can use
the d_is_xxx() functions even in a filesystem.
There is one further complication: a 0,0 chardev dentry may be labelled
DCACHE_WHITEOUT_TYPE rather than DCACHE_SPECIAL_TYPE. Strictly, this was
intended for special directory entry types that don't have attached inodes.
The following perl+coccinelle script was used:
use strict;
my @callers;
open($fd, 'git grep -l \'S_IS[A-Z].*->d_inode\' |') ||
die "Can't grep for S_ISDIR and co. callers";
@callers = <$fd>;
close($fd);
unless (@callers) {
print "No matches\n";
exit(0);
}
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