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tty: n_gsm, eliminate indirection for gsm->{output,error}()

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gsm->output and ->error are set only to gsmld_output and gsm_error,
respectively. Call these functions directly and remove error and output
function pointers from struct gsm_mux completely.

Note: we need a forward declaration of gsmld_output now.

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Link: https://lore.kernel.org/r/20200818085655.12071-1-jslaby@suse.cz
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Jiri Slaby 2020-08-18 10:56:48 +02:00 committed by Greg Kroah-Hartman
parent a89313825b
commit a579767c1f
1 changed files with 6 additions and 9 deletions
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15
drivers/tty/n_gsm.c
View file

@ -222,11 +222,8 @@ struct gsm_mux {
u8 received_fcs;
u8 *txframe; /* TX framing buffer */
/* Methods for the receiver side */
/* Method for the receiver side */
void (*receive)(struct gsm_mux *gsm, u8 ch);
void (*error)(struct gsm_mux *gsm, u8 ch, u8 flag);
/* And transmit side */
int (*output)(struct gsm_mux *mux, u8 *data, int len);
/* Link Layer */
unsigned int mru;
@ -366,6 +363,8 @@ static const u8 gsm_fcs8[256] = {
#define INIT_FCS 0xFF
#define GOOD_FCS 0xCF
static int gsmld_output(struct gsm_mux *gsm, u8 *data, int len);
/**
* gsm_fcs_add - update FCS
* @fcs: Current FCS
@ -587,7 +586,7 @@ static void gsm_send(struct gsm_mux *gsm, int addr, int cr, int control)
WARN_ON(1);
return;
}
gsm->output(gsm, cbuf, len);
gsmld_output(gsm, cbuf, len);
gsm_print_packet("-->", addr, cr, control, NULL, 0);
}
@ -687,7 +686,7 @@ static void gsm_data_kick(struct gsm_mux *gsm, struct gsm_dlci *dlci)
print_hex_dump_bytes("gsm_data_kick: ",
DUMP_PREFIX_OFFSET,
gsm->txframe, len);
if (gsm->output(gsm, gsm->txframe, len) < 0)
if (gsmld_output(gsm, gsm->txframe, len) < 0)
break;
/* FIXME: Can eliminate one SOF in many more cases */
gsm->tx_bytes -= msg->len;
@ -2128,7 +2127,6 @@ static int gsm_activate_mux(struct gsm_mux *gsm)
gsm->receive = gsm0_receive;
else
gsm->receive = gsm1_receive;
gsm->error = gsm_error;
spin_lock(&gsm_mux_lock);
for (i = 0; i < MAX_MUX; i++) {
@ -2378,7 +2376,6 @@ static int gsmld_attach_gsm(struct tty_struct *tty, struct gsm_mux *gsm)
int ret, i;
gsm->tty = tty_kref_get(tty);
gsm->output = gsmld_output;
ret = gsm_activate_mux(gsm);
if (ret != 0)
tty_kref_put(gsm->tty);
@ -2438,7 +2435,7 @@ static void gsmld_receive_buf(struct tty_struct *tty, const unsigned char *cp,
case TTY_BREAK:
case TTY_PARITY:
case TTY_FRAME:
gsm->error(gsm, *dp, flags);
gsm_error(gsm, *dp, flags);
break;
default:
WARN_ONCE(1, "%s: unknown flag %d\n",