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author | Rafał Miłecki <rafal@milecki.pl> | 2017-03-22 21:09:00 +0100 |
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committer | Rafał Miłecki <rafal@milecki.pl> | 2017-03-24 08:06:35 +0100 |
commit | fce21ae4ccfcee0c28fb18f5507e145fb0b02dec (patch) | |
tree | 6c29b7c1f65945991d0cae13af012e6c14adc713 /target/linux/brcm2708/patches-4.9/950-0087-amba_pl011-Don-t-use-DT-aliases-for-numbering.patch | |
parent | 46e390322a58bdc632ee43fdf9d14115dac26e7a (diff) | |
download | upstream-fce21ae4ccfcee0c28fb18f5507e145fb0b02dec.tar.gz upstream-fce21ae4ccfcee0c28fb18f5507e145fb0b02dec.tar.bz2 upstream-fce21ae4ccfcee0c28fb18f5507e145fb0b02dec.zip |
brcm2708: rename all patches from raspberrypi git tree to use 950 prefix
Right now all brcm2708 patches are extracted from the non-mainline
raspberrypi/linux git tree. Many of them are hacks and/or are unneeded
in LEDE. Raspberry Pi is getting better and better mainline support so
it would be nice to finally start maintaining patches in a cleaner way:
1) Backport patches accepted in upstream tree
2) Start using upstream drivers
3) Pick only these patches that are needed for more complete support
Handling above tasks requires grouping patches - ideally using the same
prefixes as generic ones. It means we should rename existing patches to
use some high prefix. This will allow e.g. use 0xx for backported code.
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Acked-by: Stijn Tintel <stijn@linux-ipv6.be>
Diffstat (limited to 'target/linux/brcm2708/patches-4.9/950-0087-amba_pl011-Don-t-use-DT-aliases-for-numbering.patch')
-rw-r--r-- | target/linux/brcm2708/patches-4.9/950-0087-amba_pl011-Don-t-use-DT-aliases-for-numbering.patch | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/target/linux/brcm2708/patches-4.9/950-0087-amba_pl011-Don-t-use-DT-aliases-for-numbering.patch b/target/linux/brcm2708/patches-4.9/950-0087-amba_pl011-Don-t-use-DT-aliases-for-numbering.patch new file mode 100644 index 0000000000..40963de876 --- /dev/null +++ b/target/linux/brcm2708/patches-4.9/950-0087-amba_pl011-Don-t-use-DT-aliases-for-numbering.patch @@ -0,0 +1,29 @@ +From b34475b447c7e97fa9c4a854849f6e856fe59931 Mon Sep 17 00:00:00 2001 +From: Phil Elwell <phil@raspberrypi.org> +Date: Tue, 23 Feb 2016 17:26:48 +0000 +Subject: [PATCH] amba_pl011: Don't use DT aliases for numbering + +The pl011 driver looks for DT aliases of the form "serial<n>", +and if found uses <n> as the device ID. This can cause +/dev/ttyAMA0 to become /dev/ttyAMA1, which is confusing if the +other serial port is provided by the 8250 driver which doesn't +use the same logic. +--- + drivers/tty/serial/amba-pl011.c | 5 +++++ + 1 file changed, 5 insertions(+) + +--- a/drivers/tty/serial/amba-pl011.c ++++ b/drivers/tty/serial/amba-pl011.c +@@ -2441,7 +2441,12 @@ static int pl011_setup_port(struct devic + if (IS_ERR(base)) + return PTR_ERR(base); + ++ /* Don't use DT serial<n> aliases - it causes the device to ++ be renumbered to ttyAMA1 if it is the second serial port in the ++ system, even though the other one is ttyS0. The 8250 driver ++ doesn't use this logic, so always remains ttyS0. + index = pl011_probe_dt_alias(index, dev); ++ */ + + uap->old_cr = 0; + uap->port.dev = dev; |