USB: misc: iowarrior: remove redundant assignment to variable io_res

The variable io_res is being assigned a value that is never read, it is
either being re-assigned a new value that is read later or it's not used
depending on the cases in the following switch statement. The assignment
is redundant and can be removed. Cleans up clang scan build warning:

drivers/usb/misc/iowarrior.c:504:2: warning: Value stored to 'io_res'
is never read [deadcode.DeadStores]

Signed-off-by: Colin Ian King <colin.i.king@gmail.com>
Link: https://lore.kernel.org/r/20231111202656.339103-1-colin.i.king@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/usb/misc/iowarrior.c b/drivers/usb/misc/iowarrior.c
index 1e3df27bab58fd1cb2be079dab3bbdca43e6a51a..6d28467ce35227684e0281a39284eba87582195a 100644 (file)
--- a/drivers/usb/misc/iowarrior.c
+++ b/drivers/usb/misc/iowarrior.c
@@ -501,7 +501,6 @@ static long iowarrior_ioctl(struct file *file, unsigned int cmd,
                dev->minor, cmd, arg);
 
        retval = 0;
-       io_res = 0;
        switch (cmd) {
        case IOW_WRITE:
                if (dev->product_id == USB_DEVICE_ID_CODEMERCS_IOW24 ||