1 files changed, 0 insertions, 70 deletions
diff --git a/target/linux/bcm27xx/patches-5.4/950-0733-sc16is7xx-Fix-for-hardware-flow-control.patch b/target/linux/bcm27xx/patches-5.4/950-0733-sc16is7xx-Fix-for-hardware-flow-control.patch
deleted file mode 100644
index 3ff77bcea9..0000000000
--- a/target/linux/bcm27xx/patches-5.4/950-0733-sc16is7xx-Fix-for-hardware-flow-control.patch
+++ /dev/null
@@ -1,70 +0,0 @@
-From 41ed4262b7398a3170399af81cf78cb8d7dd8b8d Mon Sep 17 00:00:00 2001
-From: Phil Elwell <phil@raspberrypi.com>
-Date: Wed, 13 May 2020 20:10:15 +0100
-Subject: [PATCH] sc16is7xx: Fix for hardware flow control
-
-The SC16IS7XX hardware flow control is mishandled by the driver in
-a number of ways:
-
-  1. The set_baud method accidentally clears it when setting EFR bit.
-  2. Even though hardware flow control is enabled, it isn't indicated
-     back to the serial framework.
-  3. Applying the flow control clears the EFR bit.
-  4. The CTS support is not indicated in the return from
-     sc16is7xx_get_mctrl.
-
-Address all of those issues using a mixture of patches found on the
-linked pages.
-
-See: https://github.com/raspberrypi/linux/issues/2542
-See: https://www.spinics.net/lists/linux-serial/msg21794.html
-
-Signed-off-by: Phil Elwell <phil@raspberrypi.com>
----
- drivers/tty/serial/sc16is7xx.c | 14 ++++++++++----
- 1 file changed, 10 insertions(+), 4 deletions(-)
-
---- a/drivers/tty/serial/sc16is7xx.c
-+++ b/drivers/tty/serial/sc16is7xx.c
-@@ -523,8 +523,9 @@ static int sc16is7xx_set_baud(struct uar
- 
- 	/* Enable enhanced features */
- 	regcache_cache_bypass(s->regmap, true);
--	sc16is7xx_port_write(port, SC16IS7XX_EFR_REG,
--			     SC16IS7XX_EFR_ENABLE_BIT);
-+	sc16is7xx_port_update(port, SC16IS7XX_EFR_REG,
-+			      SC16IS7XX_EFR_ENABLE_BIT,
-+			      SC16IS7XX_EFR_ENABLE_BIT);
- 	regcache_cache_bypass(s->regmap, false);
- 
- 	/* Put LCR back to the normal mode */
-@@ -846,7 +847,7 @@ static unsigned int sc16is7xx_get_mctrl(
- 	/* DCD and DSR are not wired and CTS/RTS is handled automatically
- 	 * so just indicate DSR and CAR asserted
- 	 */
--	return TIOCM_DSR | TIOCM_CAR;
-+	return TIOCM_DSR | TIOCM_CAR | TIOCM_RI | TIOCM_CTS;
- }
- 
- static void sc16is7xx_set_mctrl(struct uart_port *port, unsigned int mctrl)
-@@ -933,14 +934,19 @@ static void sc16is7xx_set_termios(struct
- 	regcache_cache_bypass(s->regmap, true);
- 	sc16is7xx_port_write(port, SC16IS7XX_XON1_REG, termios->c_cc[VSTART]);
- 	sc16is7xx_port_write(port, SC16IS7XX_XOFF1_REG, termios->c_cc[VSTOP]);
--	if (termios->c_cflag & CRTSCTS)
-+	if (termios->c_cflag & CRTSCTS) {
- 		flow |= SC16IS7XX_EFR_AUTOCTS_BIT |
- 			SC16IS7XX_EFR_AUTORTS_BIT;
-+		port->status |= UPSTAT_AUTOCTS;
-+	};
- 	if (termios->c_iflag & IXON)
- 		flow |= SC16IS7XX_EFR_SWFLOW3_BIT;
- 	if (termios->c_iflag & IXOFF)
- 		flow |= SC16IS7XX_EFR_SWFLOW1_BIT;
- 
-+	/* Always set enable enhanced */
-+	flow |= SC16IS7XX_EFR_ENABLE_BIT;
-+
- 	sc16is7xx_port_write(port, SC16IS7XX_EFR_REG, flow);
- 	regcache_cache_bypass(s->regmap, false);
-