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authorÁlvaro Fernández Rojas <noltari@gmail.com>2019-12-23 17:25:19 +0100
committerÁlvaro Fernández Rojas <noltari@gmail.com>2019-12-24 18:49:49 +0100
commitc2308a7e4adbb2acc8ff149f91d1ca46801c135e (patch)
treeffc720dc7c05c331d6569fc3c2f0772fb375e419 /target/linux/brcm2708/patches-4.19/950-0036-amba_pl011-Insert-mb-for-correct-FIFO-handling.patch
parent67dcc43f3a22dc3a7ac07a7065971b426feeb043 (diff)
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brcm2708: update to latest patches from RPi Foundation
Also removes reverted patches. Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
Diffstat (limited to 'target/linux/brcm2708/patches-4.19/950-0036-amba_pl011-Insert-mb-for-correct-FIFO-handling.patch')
-rw-r--r--target/linux/brcm2708/patches-4.19/950-0036-amba_pl011-Insert-mb-for-correct-FIFO-handling.patch27
1 files changed, 0 insertions, 27 deletions
diff --git a/target/linux/brcm2708/patches-4.19/950-0036-amba_pl011-Insert-mb-for-correct-FIFO-handling.patch b/target/linux/brcm2708/patches-4.19/950-0036-amba_pl011-Insert-mb-for-correct-FIFO-handling.patch
deleted file mode 100644
index 30ac2a883c..0000000000
--- a/target/linux/brcm2708/patches-4.19/950-0036-amba_pl011-Insert-mb-for-correct-FIFO-handling.patch
+++ /dev/null
@@ -1,27 +0,0 @@
-From 76627df3e5f0513118dac20710766f97fc5ca32d Mon Sep 17 00:00:00 2001
-From: Phil Elwell <phil@raspberrypi.org>
-Date: Fri, 29 Sep 2017 10:32:19 +0100
-Subject: [PATCH] amba_pl011: Insert mb() for correct FIFO handling
-
-The pl011 register accessor functions use the _relaxed versions of the
-standard readl() and writel() functions, meaning that there are no
-automatic memory barriers. When polling a FIFO status register to check
-for fullness, it is necessary to ensure that any outstanding writes have
-completed; otherwise the flags are effectively stale, making it possible
-that the next write is to a full FIFO.
-
-Signed-off-by: Phil Elwell <phil@raspberrypi.org>
----
- drivers/tty/serial/amba-pl011.c | 1 +
- 1 file changed, 1 insertion(+)
-
---- a/drivers/tty/serial/amba-pl011.c
-+++ b/drivers/tty/serial/amba-pl011.c
-@@ -1383,6 +1383,7 @@ static bool pl011_tx_char(struct uart_am
- return false; /* unable to transmit character */
-
- pl011_write(c, uap, REG_DR);
-+ mb();
- uap->port.icount.tx++;
-
- return true;