cp210x.c (f61309d9c96a308465bec9d2e5206da265b075a0) cp210x.c (03f32d7cb51b62f6cc7fd884d6978fe1a6ad3f8d)
1// SPDX-License-Identifier: GPL-2.0
2/*
3 * Silicon Laboratories CP210x USB to RS232 serial adaptor driver
4 *
5 * Copyright (C) 2005 Craig Shelley (craig@microtron.org.uk)
6 *
7 * Support to set flow control line levels using TIOCMGET and TIOCMSET
8 * thanks to Karl Hiramoto karl@hiramoto.org. RTSCTS hardware flow

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1108 return result;
1109 }
1110
1111 return 0;
1112}
1113
1114static bool cp210x_termios_change(const struct ktermios *a, const struct ktermios *b)
1115{
1// SPDX-License-Identifier: GPL-2.0
2/*
3 * Silicon Laboratories CP210x USB to RS232 serial adaptor driver
4 *
5 * Copyright (C) 2005 Craig Shelley (craig@microtron.org.uk)
6 *
7 * Support to set flow control line levels using TIOCMGET and TIOCMSET
8 * thanks to Karl Hiramoto karl@hiramoto.org. RTSCTS hardware flow

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1108 return result;
1109 }
1110
1111 return 0;
1112}
1113
1114static bool cp210x_termios_change(const struct ktermios *a, const struct ktermios *b)
1115{
1116 bool iflag_change;
1116 bool iflag_change, cc_change;
1117
1118 iflag_change = ((a->c_iflag ^ b->c_iflag) & (INPCK | IXON | IXOFF));
1117
1118 iflag_change = ((a->c_iflag ^ b->c_iflag) & (INPCK | IXON | IXOFF));
1119 cc_change = a->c_cc[VSTART] != b->c_cc[VSTART] ||
1120 a->c_cc[VSTOP] != b->c_cc[VSTOP];
1119
1121
1120 return tty_termios_hw_change(a, b) || iflag_change;
1122 return tty_termios_hw_change(a, b) || iflag_change || cc_change;
1121}
1122
1123static void cp210x_set_flow_control(struct tty_struct *tty,
1124 struct usb_serial_port *port, struct ktermios *old_termios)
1125{
1126 struct cp210x_special_chars chars;
1127 struct cp210x_flow_ctl flow_ctl;
1128 u32 flow_repl;
1129 u32 ctl_hs;
1130 int ret;
1131
1132 if (old_termios &&
1133 C_CRTSCTS(tty) == (old_termios->c_cflag & CRTSCTS) &&
1134 I_IXON(tty) == (old_termios->c_iflag & IXON) &&
1123}
1124
1125static void cp210x_set_flow_control(struct tty_struct *tty,
1126 struct usb_serial_port *port, struct ktermios *old_termios)
1127{
1128 struct cp210x_special_chars chars;
1129 struct cp210x_flow_ctl flow_ctl;
1130 u32 flow_repl;
1131 u32 ctl_hs;
1132 int ret;
1133
1134 if (old_termios &&
1135 C_CRTSCTS(tty) == (old_termios->c_cflag & CRTSCTS) &&
1136 I_IXON(tty) == (old_termios->c_iflag & IXON) &&
1135 I_IXOFF(tty) == (old_termios->c_iflag & IXOFF)) {
1137 I_IXOFF(tty) == (old_termios->c_iflag & IXOFF) &&
1138 START_CHAR(tty) == old_termios->c_cc[VSTART] &&
1139 STOP_CHAR(tty) == old_termios->c_cc[VSTOP]) {
1136 return;
1137 }
1138
1139 if (I_IXON(tty) || I_IXOFF(tty)) {
1140 memset(&chars, 0, sizeof(chars));
1141
1142 chars.bXonChar = START_CHAR(tty);
1143 chars.bXoffChar = STOP_CHAR(tty);

--- 745 unchanged lines hidden --- 		1140 return;
1141 }
1142
1143 if (I_IXON(tty) || I_IXOFF(tty)) {
1144 memset(&chars, 0, sizeof(chars));
1145
1146 chars.bXonChar = START_CHAR(tty);
1147 chars.bXoffChar = STOP_CHAR(tty);

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