Fix the sparse warning about a context imbalance in the
srpc_service_post_buffer function by telling sparse that it
should expect the lock to be held on entry and held on exit.

  drivers/staging/lustre/lnet/selftest/rpc.c:508:17: warning: context imbalance in 'srpc_service_post_buffer' - unexpected unlock
Signed-off-by: Jeremiah Mahler <jmmahler@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Fix the sparse warning about a context imbalance in the
sfw_deactivate_session function by telling sparse that it
should expect the lock to be held on entry and held on exit.

  drivers/staging/lustre/lnet/selftest/framework.c:210:9: warning: context imbalance in 'sfw_deactivate_session' - unexpected unlock
Signed-off-by: Jeremiah Mahler <jmmahler@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Fix several "symbol '...' was not declared" sparse warnings
for variables which are only used locally by declaring them static.
Signed-off-by: Jeremiah Mahler <jmmahler@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Fix several "symbol '...' was not declared" sparse warnings which
are caused by global variables by declaring them in the header file.
Signed-off-by: Jeremiah Mahler <jmmahler@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Avoid forward declaratoins by moving functions to a location before they
are referenced.
Signed-off-by: Sören Brinkmann <soeren.brinkmann@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

This fixes sparse warnings:
  staging/lustre/lustre/libcfs/nidstrings.c:200:11: warning: symbol 'libcfs_nnetstrfns' was not declared. Should it be static?
  drivers/staging/lustre/lustre/libcfs/nidstrings.c:203:1: warning: symbol 'libcfs_lo_str2addr' was not declared. Should it be static?
  drivers/staging/lustre/lustre/libcfs/nidstrings.c:210:1: warning: symbol 'libcfs_ip_addr2str' was not declared. Should it be static?
  drivers/staging/lustre/lustre/libcfs/nidstrings.c:227:1: warning: symbol 'libcfs_ip_str2addr' was not declared. Should it be static?
  drivers/staging/lustre/lustre/libcfs/nidstrings.c:248:1: warning: symbol 'libcfs_decnum_addr2str' was not declared. Should it be static?
  drivers/staging/lustre/lustre/libcfs/nidstrings.c:254:1: warning: symbol 'libcfs_hexnum_addr2str' was not declared. Should it be static?
  drivers/staging/lustre/lustre/libcfs/nidstrings.c:260:1: warning: symbol 'libcfs_num_str2addr' was not declared. Should it be static?
  staging/lustre/lustre/libcfs/nidstrings.c:279:18: warning: symbol 'libcfs_lnd2netstrfns' was not declared. Should it be static?
  drivers/staging/lustre/lustre/libcfs/nidstrings.c:292:18: warning: symbol 'libcfs_namenum2netstrfns' was not declared. Should it be static?
  drivers/staging/lustre/lustre/libcfs/nidstrings.c:307:18: warning: symbol 'libcfs_name2netstrfns' was not declared. Should it be static?

Some functions had static forward declarations followed by non-static
implementations. Those forward declarations are removed and the
implementations are declared static and moved into a location that
doesn't require forward declarations.
Signed-off-by: Sören Brinkmann <soeren.brinkmann@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Remove all custom MIN/MAX and min_t operations since they are
no longer needed.
Signed-off-by: Jeremiah Mahler <jmmahler@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Switch from MIN to min_t and remove the previous cast of the second
argument to int.
Signed-off-by: Jeremiah Mahler <jmmahler@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Switch from MIN to min and fix the new type warning.  The
warning is produced because a comparison between iov_len,
which is a __kernel_size_t, is made to kiov_len, which is an
unsigned int (include/linux/lnet/types.h).  Fix the warning
by casting kiov_len to __kernel_size_t.
Signed-off-by: Jeremiah Mahler <jmmahler@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Switch from MIN/MAX to min_t/max_t with a size_t type.  The size_t type
was chosen because one operand is a size_t and all the others are
immediate integer values.
Signed-off-by: Jeremiah Mahler <jmmahler@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Switch from MIN to the built in min_t with the int type.
Signed-off-by: Jeremiah Mahler <jmmahler@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Custom MIN/MAX operations are being used which are not as robust
as the built in min/max operations which will warn about potentially
problematic type comparisons.

For the simple cases, where no type warning is produced, simply
replace MIN/MAX with min/max.
Signed-off-by: Jeremiah Mahler <jmmahler@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Align switch and case to be at the same indent.
Signed-off-by: Samuel Kihahu <skihahu@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1)  The places which called copy_from_user() were returning the number
of bytes not copied instead of -EFAULT.

2) The user could trigger a memory leak if the condition
"(hdr.ioc_len != data->ioc_len)" was true.  Instead of adding a new call
to OBD_FREE_LARGE(), I created a free_buf label and changed everything
to use that label.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Tidied up some code in a case statement after a discussion.

This was partly found using a static code analysis program called cppcheck.
Signed-off-by: Rickard Strandqvist <rickard_strandqvist@spectrumdigital.se>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Removed an unnecessary NULL check.
Signed-off-by: Rickard Strandqvist <rickard_strandqvist@spectrumdigital.se>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

ptlrpc_internal.h contains the prototypes for sptlrpc_gc_init() and
sptlrpc_gc_fini(), which are defined in sec_gc.c.

This removes the following sparse warnings:

drivers/staging/lustre/lustre/ptlrpc/sec_gc.c:217:5: warning: symbol 'sptlrpc_gc_init' was not declared. Should it be static?
drivers/staging/lustre/lustre/ptlrpc/sec_gc.c:241:6: warning: symbol 'sptlrpc_gc_fini' was not declared. Should it be static?
Signed-off-by: Spencer Baugh <sbaugh@andrew.cmu.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Removed an unnecessary NULL check.
I have checked the only place this function is called from.
Signed-off-by: Rickard Strandqvist <rickard_strandqvist@spectrumdigital.se>
Reviewed-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

The `mult' parameter is negated if the user data begins with a '-' so
that the final value has the appropriate sign.  But `mult' is only used
if the user data does not include a "units" suffix.  In this case,
`mult' is overridden with the numeric scale conveyed by the units suffix,
but retains the sign of the original value.

Having `mult' serving double-duty works but is confusing.  Use a new
local variable to store the sign of the user data instead.  This also
fixes a pitfall of passing 0 to `mult', expecting it to be ignored when
a units suffix is specified, but having the effect of taking the
absolute value of the user-provided data.
Signed-off-by: Chris Rorvick <chris@rorvick.com>
Reviewed-by: Andreas Dilger <andreas.dilger@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Units can be passed to lprocfs_write_frac_u64_helper() via a suffix
(e.g., "...K", "...M", etc.) tacked onto the value.  A comment states
that "specified units override the multiplier," though the multiplier is
overridden regardless.  Update the conditional logic so that it only
applies when units are specified.
Signed-off-by: Chris Rorvick <chris@rorvick.com>
Reviewed-by: Andreas Dilger <andreas.dilger@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

make sparse happy since these two fuchtion are only used in module.c.
tested by successful compilation.
Signed-off-by: Jia He <hejianet@gmail.com>
Cc: Oleg Drokin <oleg.drokin@intel.com>
Cc: Andreas Dilger <andreas.dilger@intel.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

- Replace body-less for-loop with while loop
- Use '\0' for null character instead of 0
Signed-off-by: Matthew Tyler <matt.tyler@flashics.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Signed-off-by: Matthew Tyler <matt.tyler@flashics.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Fixed a brace coding style issue for functions.
Signed-off-by: Dean Michael Ancajas <dbancajas@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Fixed the below warning in sparse:

drivers/staging/lustre/lustre/ptlrpc/lproc_ptlrpc.c:184:6:
warning: symbol 'ptlrpc_lprocfs_register' was not declared.
Should it be static?
Signed-off-by: Fred Chou <fred.chou.nd@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

This patch replace the value '80' used in several files in the lustre source code
with a define LUSTRE_MDT_MAXNAMELEN.

This value is used in 4 different structures as the maximum len for a service name.
According to the comments, these names follow a convention which make it possible
to use the same define for LCS, LSS, LCF, and LSF.
Signed-off-by: Tristan Lelong <tristan@lelong.xyz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

This patch fix a sparse warning in lustre sources

warning: incorrect type in argument 1 (different address spaces)
    expected void [noderef] <asn:1>*to
    got char *<noident>

This is done by adding the missing __user attribute on userland pointers inside the LPROC_SEQ_FOPS like macros:
- LPROC_SEQ_FOPS
- LPROC_SEQ_FOPS_RW_TYPE
- LPROC_SEQ_FOPS_WR_ONLY
- LDLM_POOL_PROC_WRITER

The patch also updates all the functions that are used by this macro:
- lprocfs_wr_*
- *_seq_write

as well as some helpers used by the previously modified functions (otherwise fixing the sparse warning add some new ones):
- lprocfs_write_frac_helper
- lprocfs_write_helper
- lprocfs_write_u64_helper

The patch also fixes one __user pointer direct dereference by strncmp in function fld_proc_hash_seq_write.
Signed-off-by: Tristan Lelong <tristan@lelong.xyz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Fixes the sparse warning:
"warning: symbol 'fld_type_proc_dir' was not declared. Should it be static?"

Also removes initialization to NULL.
Signed-off-by: Brian Vandre <bvandre@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Fix the following checkpatch.pl errors

ERROR: else should follow close brace '}'
+                       }
+                       else {

ERROR: else should follow close brace '}'
+                       }
+                       else {

ERROR: else should follow close brace '}'
+                       }
+                       else {

ERROR: else should follow close brace '}'
+       }
+       else {

ERROR: else should follow close brace '}'
+                       }
+                       else {
Signed-off-by: Austin Kerbow <amkerbow@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Avoid allocate memory if we will exit the function.

Was found by using a static code analysis program called cppcheck.
Signed-off-by: Rickard Strandqvist <rickard_strandqvist@spectrumdigital.se>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Fixed a coding style issue for braces.
Signed-off-by: Dean Michael Ancajas <dbancajas@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Remove the function bitswap() that is not used anywhere.

This was partially found by using a static code analysis program called cppcheck.
Signed-off-by: Rickard Strandqvist <rickard_strandqvist@spectrumdigital.se>
Reviewed-by: Insop Song <Insop.Song@gainspeed.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Fixed a typo in nvec.c file
Signed-off-by: Gustavo A. R. Silva <garsilva@embeddedor.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

This patch gets rid of the following sparse warning:

drivers/staging/olpc_dcon/olpc_dcon.c:787:19: warning: symbol 'dcon_driver' was not declared. Should it be static?
Signed-off-by: Murilo Opsfelder Araujo <mopsfelder@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Misspelled comment corrected
Signed-off-by: tolga ceylan <tolga.ceylan@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Fixed a typo in olpc_dcon_xo_1.c file.
Signed-off-by: Gustavo A. R. Silva <garsilva@embeddedor.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

WARNING: Single statement macros should not use a do {} while (0) loop
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Acked-by: Jason Cooper <jason@lakedaemon.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Acked-by: Jason Cooper <jason@lakedaemon.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

dgnc_start() ignores errors in class_create() and device_create()
and it does not deallocate resources if dgnc_tty_preinit() fails.

The patch implements proper error handling.

Found by Linux Driver Verification project (linuxtesting.org).
Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>