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| author | Russell King <rmk+kernel@arm.linux.org.uk> | 2015-11-16 20:41:02 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2015-12-14 06:59:48 +0300 |
| commit | f5ce6edd22cff94e7b4a17f26cad43e60ae3d080 (patch) | |
| tree | c8c986ba2bc78c8b3b5a985c4faf4f73791258b4 /drivers/tty/serial/meson_uart.c | |
| parent | 7ec758718920e5e5876d0d02ece6855128c8eb1e (diff) | |
| download | linux-f5ce6edd22cff94e7b4a17f26cad43e60ae3d080.tar.xz | |
tty: amba-pl011: switch to using relaxed IO accessors
Using relaxed IO accessors allows GCC to better optimise this code
as we eliminate the heavy memory barriers - for example, GCC can now
cache the address of a register across a read-modify-write sequence,
rather than reloading the base address, offset and access size flag.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Reviewed-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tty/serial/meson_uart.c')
0 files changed, 0 insertions, 0 deletions