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| author | Masahiro Yamada <yamada.masahiro@socionext.com> | 2015-10-19 13:37:55 +0900 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2015-12-12 21:42:31 -0800 |
| commit | 7be047e035dc4fb1536f1694cbb932f881533ab2 (patch) | |
| tree | 92f9ac1b12c1914af7cab91cf60fd6e426e13e4c /drivers | |
| parent | 527e9316f8ec44bd53d90fb9f611fa7ffff52bb9 (diff) | |
| download | linux-7be047e035dc4fb1536f1694cbb932f881533ab2.tar.gz linux-7be047e035dc4fb1536f1694cbb932f881533ab2.tar.bz2 linux-7be047e035dc4fb1536f1694cbb932f881533ab2.zip | |
serial: 8250_uniphier: fix dl_read and dl_write functions
The register offset must be shifted by regshift, otherwise the
baudrate is not set. I missed the issue probably because the
divisor register was already set by the boot loader.
Fixes: 1a8d2903cb6a ("serial: 8250_uniphier: add UniPhier serial driver")
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/tty/serial/8250/8250_uniphier.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/drivers/tty/serial/8250/8250_uniphier.c b/drivers/tty/serial/8250/8250_uniphier.c index d11621e2cf1d..245edbb68d4b 100644 --- a/drivers/tty/serial/8250/8250_uniphier.c +++ b/drivers/tty/serial/8250/8250_uniphier.c @@ -115,12 +115,16 @@ static void uniphier_serial_out(struct uart_port *p, int offset, int value) */ static int uniphier_serial_dl_read(struct uart_8250_port *up) { - return readl(up->port.membase + UNIPHIER_UART_DLR); + int offset = UNIPHIER_UART_DLR << up->port.regshift; + + return readl(up->port.membase + offset); } static void uniphier_serial_dl_write(struct uart_8250_port *up, int value) { - writel(value, up->port.membase + UNIPHIER_UART_DLR); + int offset = UNIPHIER_UART_DLR << up->port.regshift; + + writel(value, up->port.membase + offset); } static int uniphier_of_serial_setup(struct device *dev, struct uart_port *port, |