[meta-xilinx] [PATCH 3/5] linux-xlnx_3.19: Remove 'xilinx-v2015.2.03' kernel

[Nathan Rossi]

This kernel is superseeded by newer kernels. This recipe is being
dropped in favour of newer linux-xlnx kernels.

Remove the recipe and clean up any remaining kernel 3.19 patches.

Signed-off-by: Nathan Rossi <nathan at nathanrossi.com>
---
 ...-Fix-RX-hang-and-TX-corruption-in-termios.patch | 62 ----------------------
 recipes-kernel/linux/linux-xlnx_3.19.bb            |  8 ---
 2 files changed, 70 deletions(-)
 delete mode 100644 recipes-kernel/linux/linux-xlnx/3.19/tty-xuartps-Fix-RX-hang-and-TX-corruption-in-termios.patch
 delete mode 100644 recipes-kernel/linux/linux-xlnx_3.19.bb

diff --git a/recipes-kernel/linux/linux-xlnx/3.19/tty-xuartps-Fix-RX-hang-and-TX-corruption-in-termios.patch b/recipes-kernel/linux/linux-xlnx/3.19/tty-xuartps-Fix-RX-hang-and-TX-corruption-in-termios.patch
deleted file mode 100644
index 8ae7b85..0000000
--- a/recipes-kernel/linux/linux-xlnx/3.19/tty-xuartps-Fix-RX-hang-and-TX-corruption-in-termios.patch
+++ /dev/null
@@ -1,62 +0,0 @@
-From 6ecde472b0d943251f8f348155495391720b61b0 Mon Sep 17 00:00:00 2001
-From: Nathan Rossi <nathan.rossi at xilinx.com>
-Date: Fri, 16 Jan 2015 13:49:25 +0100
-Subject: [PATCH] tty: xuartps: Fix RX hang, and TX corruption in termios call
-
-The implementation of flushing the RX FIFO breaks in a number of cases,
-it is impossible to ensure an complete flush of the RX FIFO due to the
-hardware not allowing the use of the FIFOs when the receiver is disabled
-(Reading from the FIFO register does not remove it from the FIFO when
-the RX_EN=0 or RX_DIS=1). Additionally during an initial set_termios
-call where RX_DIS=1 causes a hang waiting forever for the RX FIFO to
-empty. On top of this the FIFO will be cleared by the use of the RXRST
-bits on the Control Register, making the RX flush pointless (as it does
-not preserve the data read anyway).
-
-Due to the TXRST the TX FIFO and transmitter can be interrupted during
-frame trasmission, causing corruption and additionally data lost in the
-FIFO. Most other serial drivers do not flush or clear the FIFOs during
-a termios configuration change and as such do not have issues with
-corruption. For this UART controller is it required that the TXRST/RXRST
-bit be flagged during the change, this means that the data in the FIFO
-will be dropped when changing configuration. In order to prevent data
-loss and corruption of the transmitted data, wait until the TX FIFO is
-empty before changing the configuration. The performance of this may
-cause the set_termios call to take a longer amount of time especially
-on lower baud rates, however it is comparable to the same performance
-hit that a console_write call costs.
-
-Signed-off-by: Nathan Rossi <nathan.rossi at xilinx.com>
-Acked-by: Anirudha Sarangi <anirudh at xilinx.com>
-Acked-by: Harini Katakam <harinik at xilinx.com>
-Signed-off-by: Michal Simek <michal.simek at xilinx.com>
-Signed-off-by: Greg Kroah-Hartman <gregkh at linuxfoundation.org>
-Upstream-Status: Backport [Available in 4.0]
----
- drivers/tty/serial/xilinx_uartps.c |   10 ++++++----
- 1 file changed, 6 insertions(+), 4 deletions(-)
-
-diff --git a/drivers/tty/serial/xilinx_uartps.c b/drivers/tty/serial/xilinx_uartps.c
-index 542bab3..cff531a 100644
---- a/drivers/tty/serial/xilinx_uartps.c
-+++ b/drivers/tty/serial/xilinx_uartps.c
-@@ -637,10 +637,12 @@ static void cdns_uart_set_termios(struct uart_port *port,
- 
- 	spin_lock_irqsave(&port->lock, flags);
- 
--	/* Empty the receive FIFO 1st before making changes */
--	while ((cdns_uart_readl(CDNS_UART_SR_OFFSET) &
--		 CDNS_UART_SR_RXEMPTY) != CDNS_UART_SR_RXEMPTY) {
--		cdns_uart_readl(CDNS_UART_FIFO_OFFSET);
-+	/* Wait for the transmit FIFO to empty before making changes */
-+	if (!(cdns_uart_readl(CDNS_UART_CR_OFFSET) & CDNS_UART_CR_TX_DIS)) {
-+		while (!(cdns_uart_readl(CDNS_UART_SR_OFFSET) &
-+				CDNS_UART_SR_TXEMPTY)) {
-+			cpu_relax();
-+		}
- 	}
- 
- 	/* Disable the TX and RX to set baud rate */
--- 
-1.7.10.4
-
diff --git a/recipes-kernel/linux/linux-xlnx_3.19.bb b/recipes-kernel/linux/linux-xlnx_3.19.bb
deleted file mode 100644
index 5ff735e..0000000
--- a/recipes-kernel/linux/linux-xlnx_3.19.bb
+++ /dev/null
@@ -1,8 +0,0 @@
-LINUX_VERSION = "3.19"
-# This points at the 'xilinx-v2015.2.03' tag
-SRCREV ?= "b0b8a30bb6598b6fdfce47f0966316d138bcfb66"
-
-include linux-xlnx.inc
-
-COMPATIBLE_MACHINE_zynqmp = "zynqmp"
-
-- 
2.6.4