The function aim_register_videodev() uses the variables 'ret' and
'retval' to represent the same value.
This patch removes 'retval' and replaces it with 'ret'. Further, it
replaces the constant return value '-ENODEV' with the result returned by
function video_register_device() in the event something went wrong.
Signed-off-by: Andrey Shvetsov <andrey.shvetsov@k2l.de>
Signed-off-by: Christian Gromm <christian.gromm@microchip.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The current V4L2 AIM implementation assigns to all video devices and to
all V4L devices the same names.
This patch makes use of hardware dependent names for the video devices and
allows the user to choose the names for the V4L devices.
Signed-off-by: Andrey Shvetsov <andrey.shvetsov@k2l.de>
Signed-off-by: Christian Gromm <christian.gromm@microchip.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
As the function get_aim_dev() does not delete elements of the list, the
use of macro list_for_each_entry_safe is not necessary.
This patch replaces the macro list_for_each_entry_safe with the macro
list_for_each_entry.
Signed-off-by: Andrey Shvetsov <andrey.shvetsov@k2l.de>
Signed-off-by: Christian Gromm <christian.gromm@microchip.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The functions get_aim_dev() and aim_rx_data() are using interrupt unsafe
spinlocks even though they may be called from an interrupt context.
This patch fixes the described problem.
Signed-off-by: Andrey Shvetsov <andrey.shvetsov@k2l.de>
Signed-off-by: Christian Gromm <christian.gromm@microchip.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
synth_add allows one to add MAXSYNTHS synths to the synths array;
however it always NULLifies the next synth in the array which
means that on the MAXSYNTHS synth we get an out-of-bounds write of
the NULL to the synths array. Make the synths array MAXSYNTHS + 1
elements in size to allow for the final NULL sentinal to avoid the
out-of-bounds write.
Issue found wit CoverityScan, CID#744671
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Reviewed-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The 'ch_intr_rx' variable was used only for increasing.
So the 'ch_intr_rx' variable is not useful for this driver.
Signed-off-by: Daeseok Youn <daeseok.youn@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The 'ch_intr_tx' variable was used only for increasing.
So the 'ch_intr_tx' variable is not useful for this driver.
Signed-off-by: Daeseok Youn <daeseok.youn@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The 'ch_intr_modem' variable was used only for increasing.
So the 'ch_intr_modem' variable is not useful for this driver.
Signed-off-by: Daeseok Youn <daeseok.youn@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The 'intr_rx' variable was used only for increasing.
So the 'intr_rx' variable is not useful for this driver.
Signed-off-by: Daeseok Youn <daeseok.youn@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The 'intr_tx' variable was used only for increasing.
So the 'intr_tx' variable is not useful for this driver.
Signed-off-by: Daeseok Youn <daeseok.youn@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The 'intr_modem' variable was used only for increasing.
So the 'intr_modem' variable is not useful for this driver.
Signed-off-by: Daeseok Youn <daeseok.youn@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
the "brd" was already checked for NULL before calling dgnc_do_remap().
the dgnc_do_remap() function was called only
from the dgnc_found_board() and the DGNC_BOARD_MAGIC value
was assigned to "brd->magic" in dgcn_found_board(). So it doesn't
need to check about magic value.
Signed-off-by: Daeseok Youn <daeseok.youn@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The 'intr_count' variable was used only for increasing.
So the 'intr_count' variable is not useful for this driver.
Signed-off-by: Daeseok Youn <daeseok.youn@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
the "brd" value cannot be NULL in dgnc_finalize_board_init().
Because "brd" as a parameter of this function was already
checked for NULL.
the dgnc_finalize_board_init() as a static function was called
only from dgnc_found_board() function and brd->magic value
was assigned once in dgnc_found_board(). So it doesn't need to
check for DGNC_BOARD_MAGIC value.
Signed-off-by: Daeseok Youn <daeseok.youn@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The dgnc_set_modem_info() used only channel_t variable.
Any other variables were used only for checking NULL.
So fist parameter changed from "tty_struct" to "channel_t" and
useless NULL checks and variables are removed.
Signed-off-by: Daeseok Youn <daeseok.youn@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The "result" variable in dgnc_get_mstat() was initialized with
"-EIO". But if the "ch" is not null, "result" will be set to zero
and if the "ch" is null, dgnc_get_mstat() will return "-ENXIO" as
an error. So "-EIO" error value was useless in dgnc_get_mstat().
Signed-off-by: Daeseok Youn <daeseok.youn@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The dgnc_block_til_ready() is only used in dgnc_tty_open().
The unit data(struct un_t) was stored into tty->driver_data in dgnc_tty_open().
And also tty and un were tested about NULL so these variables doesn't
need to check for NULL in dgnc_block_til_ready().
Signed-off-by: Daeseok Youn <daeseok.youn@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Add the __exit macro to the dgnc_cleanup_module(void) function
in dgnc_driver.c
Signed-off-by: Joshua Houghton <josh@awful.name>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Christian Gromm
Colin Ian King
Laurence Rochfort
Daeseok Youn
Joshua Houghton
Al Viro