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staging: gpib: fix uninitialized variable in usb_gpib_command()

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The number of bytes written is supposed to be zero at the start of this
function but only one caller, ibcmd(), initializes it to zero.  For the
other three callers, setup_serial_poll(), read_serial_poll_byte() and
cleanup_serial_poll(), it's an uninitialized variable.

Fixes: fce79512a9 ("staging: gpib: Add LPVO DIY USB GPIB driver")
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Link: https://lore.kernel.org/r/a7fed100-ea4d-4dd8-97c6-3fbd2c15f795@stanley.mountain
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Dan Carpenter
2024-10-17 22:31:46 +03:00
committed by Greg Kroah-Hartman
parent cbf821e689
commit 1f6bfe18d0
1 changed files with 1 additions and 0 deletions
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1
drivers/staging/gpib/lpvo_usb_gpib/lpvo_usb_gpib.c
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@@ -597,6 +597,7 @@ static int usb_gpib_command(gpib_board_t *board,
set_timeout(board);
*bytes_written = 0;
for (i = 0 ; i < length ; i++) {
command[3] = buffer[i];
retval = send_command(board, command, 5);