tty: n_gsm, remove duplicates of parameters

dp, f, and i are only duplicates of gsmld_receive_buf's parameters. Use
the parameters directly (cp, fp, and count) and delete these local
variables.

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Link: https://lore.kernel.org/r/20210302062214.29627-41-jslaby@suse.cz
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/tty/n_gsm.c b/drivers/tty/n_gsm.c
index b063bc6..7e1d198 100644 (file)
--- a/drivers/tty/n_gsm.c
+++ b/drivers/tty/n_gsm.c
@@ -2416,27 +2416,24 @@ static void gsmld_receive_buf(struct tty_struct *tty, const unsigned char *cp,
                              char *fp, int count)
 {
        struct gsm_mux *gsm = tty->disc_data;
-       const unsigned char *dp;
-       char *f;
-       int i;
        char flags = TTY_NORMAL;
 
        if (debug & 4)
                print_hex_dump_bytes("gsmld_receive: ", DUMP_PREFIX_OFFSET,
                                     cp, count);
 
-       for (i = count, dp = cp, f = fp; i; i--, dp++) {
-               if (f)
-                       flags = *f++;
+       for (; count; count--, cp++) {
+               if (fp)
+                       flags = *fp++;
                switch (flags) {
                case TTY_NORMAL:
-                       gsm->receive(gsm, *dp);
+                       gsm->receive(gsm, *cp);
                        break;
                case TTY_OVERRUN:
                case TTY_BREAK:
                case TTY_PARITY:
                case TTY_FRAME:
-                       gsm_error(gsm, *dp, flags);
+                       gsm_error(gsm, *cp, flags);
                        break;
                default:
                        WARN_ONCE(1, "%s: unknown flag %d\n",