Use kzalloc rather than kmalloc followed by memset with 0.
Found by coccinelle.
Signed-off-by: Alexander Beregalov <a.beregalov@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Change return values type from u16 to int because all functions
use ft1000_control function which return int.
Signed-off-by: Marek Belisko <marek.belisko@open-nandra.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
dsp_img_info->version and requested_version have same type
so additional temporary variable creation could be omitted
because variables could be compares directly.
Signed-off-by: Marek Belisko <marek.belisko@open-nandra.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Same check was done on three places which make code unreadable.
Put repeat routine to separate function.
Signed-off-by: Marek Belisko <marek.belisko@open-nandra.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Remove variables which was defined and assigned
but never used in function.
Signed-off-by: Marek Belisko <marek.belisko@open-nandra.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Following patch will fix all compilation errors. Main problems
was with pcmcia API changes. Also remove BROKEN as now driver
is properly build.
Signed-off-by: Marek Belisko <marek.belisko@open-nandra.com>
Signed-off-by: Stano Lanci <chl.pixo@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
During ioctl testing was observed kernel panic beuase
file->private_data pointer was not correctly set when
debugfs file was created. Add correct pointer setup.
Signed-off-by: Marek Belisko <marek.belisko@open-nandra.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Name of old file was misleading because it is currently
updated to debugfs so change also file name.
Signed-off-by: Marek Belisko <marek.belisko@open-nandra.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Using gCardIndex as global variable was not correctly used because
for every plugged device was set to 0 in init_ft1000_netdev.
Remove global definition. Use it locally and for every plugged
device extract number from net device name.
Signed-off-by: Marek Belisko <marek.belisko@open-nandra.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
You should not be able to write to a debugfs file from any user.
Cc: Marek Belisko <marek.belisko@open-nandra.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Add checking for return value ft1000InitProc and cleanup
if something fail.
Signed-off-by: Marek Belisko <marek.belisko@open-nandra.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Cleaning proc entries when error occures was not handled correctly.
So fix and also add proper cleaning.
Signed-off-by: Marek Belisko <marek.belisko@open-nandra.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
We don't need to store pointer to device in some local
array because we always pass to debugfs correct device pointer.
So remove it.
Signed-off-by: Marek Belisko <marek.belisko@open-nandra.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Assign private data pointer to device for usage in file operations.
Signed-off-by: Marek Belisko <marek.belisko@open-nandra.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Character device was used only for debugging purposes.
Convert it to debugfs functionality. For every plugged device
create new directory with one file.
Signed-off-by: Marek Belisko <marek.belisko@open-nandra.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Fix goto error logic which could lead to kernel panics
because kthread_stop() is called in not correct error
conditions. Seen it sometimes when dsp_reload() fails
then I got kernel panic.
Signed-off-by: Marek Belisko <marek.belisko@open-nandra.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Remove exec_mknod() and rm_mknod() helpers which was used for
device nodes creating/removing in kernel space.
Signed-off-by: Marek Belisko <marek.belisko@open-nandra.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This patch fix following warning:
drivers/staging/ft1000/ft1000-usb/ft1000_usb.c:67:22:
warning: ‘pft1000info’ may be used uninitialized in this function
Signed-off-by: Marek Belisko <marek.belisko@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
GCC complains that if (info->CardReady) is false we kfree() an
uninitialized pointer.
Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
While doing a ktest.pl I used a MIN_CONFIG that had STAGING enabled, and
a randconfig with CONFIG_DEBUG_STRICT_USER_COPY_CHECKS enabled caught
the following bug:
In file included from /home/rostedt/work/autotest/nobackup/linux-test.git/arch/x86/include/asm/uaccess.h:571:0,
from /home/rostedt/work/autotest/nobackup/linux-test.git/include/linux/poll.h:14,
from /home/rostedt/work/autotest/nobackup/linux-test.git/drivers/staging/ft1000/ft1000-usb/ft1000_chdev.c:32:
In function 'copy_from_user',
inlined from 'ft1000_ChIoctl' at /home/rostedt/work/autotest/nobackup/linux-test.git/drivers/staging/ft1000/ft1000-usb/ft1000_chdev.c:702:36:
/home/rostedt/work/autotest/nobackup/linux-test.git/arch/x86/include/asm/uaccess_32.h:212:26: error: call to 'copy_from_user_overflow' declared with attribute error: copy_from_user() buffer size is not provably correct
Looking at the code it was obvious what the problem was. The pointer
dpram_data was being allocated but the address was being written to.
Looking at the comment above the code shows that it use to write into an
element of that pointer where the '&' is appropriate. But now that it
writes to the pointer itself, we need to remove the '&' otherwise we
write over the pointer and not into the data it points to.
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Cc: Marek Belisko <marek.belisko@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
With commit 2dab1ac81b there
was intruduced error which lead to stopping uninitialized
kthread which leads to kernel panics.
This patch fix problems with common entry point in correct
way.
Signed-off-by: Marek Belisko <marek.belisko@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This was necessary in order to resolve some conflicts that happened
between -rc1 and -rc2 with the following files:
drivers/staging/bcm/Bcmchar.c
drivers/staging/intel_sst/intel_sst_app_interface.c
All should be resolved now.
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
When reg_ft1000_netdev() fails created kthread isn't stopped.
So add return point for stopping thread.
Signed-off-by: Marek Belisko <marek.belisko@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
kthread_run could fail so we will check return value.
Signed-off-by: Marek Belisko <marek.belisko@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Function ft1000_submit_rx_urb() could fail so add checking
for return value.
Signed-off-by: Marek Belisko <marek.belisko@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Handling for pseudo header was done by directly copying
data to tx buffer. This hide a functionality and make
code unreadable.
Use approach where fill pseudo_hdr structure first with data and then copy
to beginning of buffer.
Signed-off-by: Marek Belisko <marek.belisko@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Remove functions which was used nowhere. Also remove dead
variables used by this functions.
Signed-off-by: Marek Belisko <marek.belisko@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Delete successive assignments to the same location. In three of the cases,
the two assignments are identical. In the case of the file
rt2860/common/cmm_aes.c, the assigned variable i is never used, so both
assignments are dropped.
A simplified version of the semantic match that finds this problem is as
follows: (http://coccinelle.lip6.fr/)
// <smpl>
@@
expression i;
@@
*i = ...;
i = ...;
// </smpl>
Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Using pdpram_blk here would cause an oops. We intended to use
&freercvpool.
Signed-off-by: Dan Carpenter <error27@gmail.com>
Tested by: Marek Belisko <marek.belisko@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
The code here is supposed checking if we exited the loop without hitting
a break. The problem is that in the error handling "i" is out of bounds
and it corrupts memory when we do an info->app_info[i].nRxMsgMiss++.
>From the comments, it looks like someone noticed this corruption and
updated the code, but didn't totally fix the problem. The correct fix
is just to remove nRxMsgMiss++ from the error path.
I believe this bug can be triggered remotely.
Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
was #ifdef so remove code which was under #else to make
code more readable.
Signed-off-by: Marek Belisko <marek.belisko@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This patch remove global flag DSP_loading which was checked
only on one place. Instead check return value for dsp_reload() function.
Signed-off-by: Marek Belisko <marek.belisko@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
call request_firmware instead of trying to open the file directly from
the kernel driver.
Signed-off-by: Marek Belisko <marek.belisko@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
get_stat_data is not fully initialized before copy_to_user() call,
e.g. LedStat is not always set.
Signed-off-by: Vasiliy Kulikov <segooon@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
init_ft1000_netdev() calls kfree(netdev) instead of free_netdev(netdev).
It doesn't check kmalloc() return value.
ft1000_read_fifo_reg() doesn't free dr on error and calls kfree(urb)
instead of usb_free_urb(urb). Also kfree(NULL) is OK.
Signed-off-by: Vasiliy Kulikov <segooon@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
In the original code, address space annotations are missing,
which hides a possible unchecked user pointer access.
Two functions use a lot of stack space.
Extern declarations are all in the wrong place, which leads
to type differences between caller and callee in some cases.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This lets us see clearer when stuff breaks.
Most of the changes are fixes for casts between int and pointer
that don't work on 64 bit.
The ioctl function uses a large amount of stack, which gets
fixed by allocating the buffer dynamically.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
As a preparation for changing the default behaviour of llseek to no_llseek,
every file_operations structure should have a .llseek operation.
There are three new instances in staging now, which can all be changed
into no_llseek explicitly since the devices do not need to seek.
Add nonseekable_open where appropriate, to prevent pread/pwrite as well.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
ft1000_copy_up_pkt() doesn't free skb on errors.
init_ft1000_card() doesn't free netdev with free_netdev() but with kfree().
init_ft1000_card() doesn't check request_region()'s return value
and doesn't free region on error.
Signed-off-by: Vasiliy Kulikov <segooon@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
The driver hasn't been updated since the .30 kernel release and will
not build due to pcmcia api changes. Mark it broken for now so no
one hits it in their build accidentally.
Cc: Marek Belisko <marek.belisko@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This fixes the build for the ft100-usb driver so it builds
properly.
Cc: Marek Belisko <marek.belisko@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
