android/android_kernel_samsung_sm8650
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

TTY: isdn, make some functions readable

Browse Source 
Huh, this was a mess.

* Remove the 5 indent levels by just returning from isdn_tty_try_read
  when the conditions there are not satisfied.
* Use 'continue' in loop in isdn_tty_readmodem to save 2 levels.
* Chain 'if's in isdn_tty_modem_escape.
* Use 'continue' in loop in isdn_tty_carrier_timeout to save 1 level.

Better to look at this patch with -w -b.

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Cc: Karsten Keil <isdn@linux-pingi.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Jiri Slaby
2012-04-02 13:53:52 +02:00
committed by Greg Kroah-Hartman
parent ce93d33cf4
commit 37630f4063
1 changed files with 92 additions and 84 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

176
drivers/isdn/i4l/isdn_tty.c
View File

@ -65,49 +65,54 @@ isdn_tty_try_read(modem_info *info, struct sk_buff *skb)
struct tty_struct *tty; struct tty_struct *tty;
char last; char last;
if (info->online) { if (!info->online)
if ((tty = info->tty)) { return 0;
if (info->mcr & UART_MCR_RTS) {
len = skb->len
#ifdef CONFIG_ISDN_AUDIO
+ ISDN_AUDIO_SKB_DLECOUNT(skb)
#endif
;
c = tty_buffer_request_room(tty, len); tty = info->tty;
if (c >= len) { if (!tty)
return 0;
if (!(info->mcr & UART_MCR_RTS))
return 0;
len = skb->len
#ifdef CONFIG_ISDN_AUDIO #ifdef CONFIG_ISDN_AUDIO
if (ISDN_AUDIO_SKB_DLECOUNT(skb)) { + ISDN_AUDIO_SKB_DLECOUNT(skb)
int l = skb->len;
unsigned char *dp = skb->data;
while (--l) {
if (*dp == DLE)
tty_insert_flip_char(tty, DLE, 0);
tty_insert_flip_char(tty, *dp++, 0);
}
if (*dp == DLE)
tty_insert_flip_char(tty, DLE, 0);
last = *dp;
} else {
#endif #endif
if (len > 1) ;
tty_insert_flip_string(tty, skb->data, len - 1);
last = skb->data[len - 1]; c = tty_buffer_request_room(tty, len);
if (c < len)
return 0;
#ifdef CONFIG_ISDN_AUDIO #ifdef CONFIG_ISDN_AUDIO
} if (ISDN_AUDIO_SKB_DLECOUNT(skb)) {
#endif int l = skb->len;
if (info->emu.mdmreg[REG_CPPP] & BIT_CPPP) unsigned char *dp = skb->data;
tty_insert_flip_char(tty, last, 0xFF); while (--l) {
else if (*dp == DLE)
tty_insert_flip_char(tty, last, TTY_NORMAL); tty_insert_flip_char(tty, DLE, 0);
tty_flip_buffer_push(tty); tty_insert_flip_char(tty, *dp++, 0);
kfree_skb(skb);
return 1;
}
}
} }
if (*dp == DLE)
tty_insert_flip_char(tty, DLE, 0);
last = *dp;
} else {
#endif
if (len > 1)
tty_insert_flip_string(tty, skb->data, len - 1);
last = skb->data[len - 1];
#ifdef CONFIG_ISDN_AUDIO
} }
return 0; #endif
if (info->emu.mdmreg[REG_CPPP] & BIT_CPPP)
tty_insert_flip_char(tty, last, 0xFF);
else
tty_insert_flip_char(tty, last, TTY_NORMAL);
tty_flip_buffer_push(tty);
kfree_skb(skb);
return 1;
} }
/* isdn_tty_readmodem() is called periodically from within timer-interrupt. /* isdn_tty_readmodem() is called periodically from within timer-interrupt.
@ -125,35 +130,39 @@ isdn_tty_readmodem(void)
modem_info *info; modem_info *info;
for (i = 0; i < ISDN_MAX_CHANNELS; i++) { for (i = 0; i < ISDN_MAX_CHANNELS; i++) {
if ((midx = dev->m_idx[i]) >= 0) { midx = dev->m_idx[i];
info = &dev->mdm.info[midx]; if (midx < 0)
if (info->online) { continue;
r = 0;
info = &dev->mdm.info[midx];
if (!info->online)
continue;
r = 0;
#ifdef CONFIG_ISDN_AUDIO #ifdef CONFIG_ISDN_AUDIO
isdn_audio_eval_dtmf(info); isdn_audio_eval_dtmf(info);
if ((info->vonline & 1) && (info->emu.vpar[1])) if ((info->vonline & 1) && (info->emu.vpar[1]))
isdn_audio_eval_silence(info); isdn_audio_eval_silence(info);
#endif #endif
if ((tty = info->tty)) { tty = info->tty;
if (info->mcr & UART_MCR_RTS) { if (tty) {
/* CISCO AsyncPPP Hack */ if (info->mcr & UART_MCR_RTS) {
if (!(info->emu.mdmreg[REG_CPPP] & BIT_CPPP)) /* CISCO AsyncPPP Hack */
r = isdn_readbchan_tty(info->isdn_driver, info->isdn_channel, tty, 0); if (!(info->emu.mdmreg[REG_CPPP] & BIT_CPPP))
else r = isdn_readbchan_tty(info->isdn_driver, info->isdn_channel, tty, 0);
r = isdn_readbchan_tty(info->isdn_driver, info->isdn_channel, tty, 1); else
if (r) r = isdn_readbchan_tty(info->isdn_driver, info->isdn_channel, tty, 1);
tty_flip_buffer_push(tty); if (r)
} else tty_flip_buffer_push(tty);
r = 1; } else
} else r = 1;
r = 1; } else
if (r) { r = 1;
info->rcvsched = 0; if (r) {
resched = 1; info->rcvsched = 0;
} else resched = 1;
info->rcvsched = 1; } else
} info->rcvsched = 1;
}
} }
if (!resched) if (!resched)
isdn_timer_ctrl(ISDN_TIMER_MODEMREAD, 0); isdn_timer_ctrl(ISDN_TIMER_MODEMREAD, 0);
@ -3769,19 +3778,19 @@ isdn_tty_modem_escape(void)
int midx; int midx;
for (i = 0; i < ISDN_MAX_CHANNELS; i++) for (i = 0; i < ISDN_MAX_CHANNELS; i++)
if (USG_MODEM(dev->usage[i])) if (USG_MODEM(dev->usage[i]) && (midx = dev->m_idx[i]) >= 0) {
if ((midx = dev->m_idx[i]) >= 0) { modem_info *info = &dev->mdm.info[midx];
modem_info *info = &dev->mdm.info[midx]; if (info->online) {
if (info->online) { ton = 1;
ton = 1; if ((info->emu.pluscount == 3) &&
if ((info->emu.pluscount == 3) && time_after(jiffies,
time_after(jiffies , info->emu.lastplus + PLUSWAIT2)) { info->emu.lastplus + PLUSWAIT2)) {
info->emu.pluscount = 0; info->emu.pluscount = 0;
info->online = 0; info->online = 0;
isdn_tty_modem_result(RESULT_OK, info); isdn_tty_modem_result(RESULT_OK, info);
}
} }
} }
}
isdn_timer_ctrl(ISDN_TIMER_MODEMPLUS, ton); isdn_timer_ctrl(ISDN_TIMER_MODEMPLUS, ton);
} }
@ -3839,15 +3848,14 @@ isdn_tty_carrier_timeout(void)
for (i = 0; i < ISDN_MAX_CHANNELS; i++) { for (i = 0; i < ISDN_MAX_CHANNELS; i++) {
modem_info *info = &dev->mdm.info[i]; modem_info *info = &dev->mdm.info[i];
if (info->dialing) { if (!info->dialing)
if (info->emu.carrierwait++ > info->emu.mdmreg[REG_WAITC]) { continue;
info->dialing = 0; if (info->emu.carrierwait++ > info->emu.mdmreg[REG_WAITC]) {
isdn_tty_modem_result(RESULT_NO_CARRIER, info); info->dialing = 0;
isdn_tty_modem_hup(info, 1); isdn_tty_modem_result(RESULT_NO_CARRIER, info);
} isdn_tty_modem_hup(info, 1);
else } else
ton = 1; ton = 1;
}
} }
isdn_timer_ctrl(ISDN_TIMER_CARRIER, ton); isdn_timer_ctrl(ISDN_TIMER_CARRIER, ton);
} }