CC: kernel: update kernel 3.18 to version 3.18.36

[openwrt/svn-archive/archive.git] / target / linux / ar71xx / patches-3.18 / 003-MIPS-ath79-make-bootconsole-wait-for-both-THRE-and-T.patch

diff --git a/target/linux/ar71xx/patches-3.18/003-MIPS-ath79-make-bootconsole-wait-for-both-THRE-and-T.patch b/target/linux/ar71xx/patches-3.18/003-MIPS-ath79-make-bootconsole-wait-for-both-THRE-and-T.patch
deleted file mode 100644 (file)
index 2eba263..0000000
--- a/target/linux/ar71xx/patches-3.18/003-MIPS-ath79-make-bootconsole-wait-for-both-THRE-and-T.patch
+++ /dev/null
@@ -1,49 +0,0 @@
-From f1ba020af5076172c9d29006a747ccf40027fedc Mon Sep 17 00:00:00 2001
-Message-Id: <f1ba020af5076172c9d29006a747ccf40027fedc.1458840219.git.mschiffer@universe-factory.net>
-From: Matthias Schiffer <mschiffer@universe-factory.net>
-Date: Thu, 24 Mar 2016 15:34:05 +0100
-Subject: [PATCH] MIPS: ath79: make bootconsole wait for both THRE and TEMT
-
-This makes the ath79 bootconsole behave the same way as the generic 8250
-bootconsole.
-
-Also waiting for TEMT (transmit buffer is empty) instead of just THRE
-(transmit buffer is not full) ensures that all characters have been
-transmitted before the real serial driver starts reconfiguring the serial
-controller (which would sometimes result in garbage being transmitted.)
-This change does not cause a visible performance loss.
-
-In addition, this seems to fix a hang observed in certain configurations on
-many AR7xxx/AR9xxx SoCs during autoconfig of the real serial driver.
-
-A more complete follow-up patch will disable 8250 autoconfig for ath79
-altogether (the serial controller is detected as a 16550A, which is not
-fully compatible with the ath79 serial, and the autoconfig may lead to
-undefined behavior on ath79.)
-
-Cc: <stable@vger.kernel.org>
-Signed-off-by: Matthias Schiffer <mschiffer@universe-factory.net>
----
- arch/mips/ath79/early_printk.c | 6 ++++--
- 1 file changed, 4 insertions(+), 2 deletions(-)
-
---- a/arch/mips/ath79/early_printk.c
-+++ b/arch/mips/ath79/early_printk.c
-@@ -31,13 +31,15 @@ static inline void prom_putchar_wait(voi
-       } while (1);
- }
- 
-+#define BOTH_EMPTY (UART_LSR_TEMT | UART_LSR_THRE)
-+
- static void prom_putchar_ar71xx(unsigned char ch)
- {
-       void __iomem *base = (void __iomem *)(KSEG1ADDR(AR71XX_UART_BASE));
- 
--      prom_putchar_wait(base + UART_LSR * 4, UART_LSR_THRE, UART_LSR_THRE);
-+      prom_putchar_wait(base + UART_LSR * 4, BOTH_EMPTY, BOTH_EMPTY);
-       __raw_writel(ch, base + UART_TX * 4);
--      prom_putchar_wait(base + UART_LSR * 4, UART_LSR_THRE, UART_LSR_THRE);
-+      prom_putchar_wait(base + UART_LSR * 4, BOTH_EMPTY, BOTH_EMPTY);
- }
- 
- static void prom_putchar_ar933x(unsigned char ch)