40 lines
1.2 KiB
Diff
40 lines
1.2 KiB
Diff
From 34a9a634432a95d8ae9af86d41fdaf32fb039c2c Mon Sep 17 00:00:00 2001
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From: Gabor Juhos <juhosg@openwrt.org>
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Date: Wed, 27 Mar 2013 21:10:14 +0100
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Subject: [PATCH 1/5] MIPS: ralink: fix uartmux group handling
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* don't try get 'ralink,uartmux' porperty if the pinmux.uart is
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not initialized,
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* don't touch 'mode' value if mux mask is zero
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Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
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---
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arch/mips/ralink/pinmux.c | 12 ++++++++----
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1 file changed, 8 insertions(+), 4 deletions(-)
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--- a/arch/mips/ralink/pinmux.c
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+++ b/arch/mips/ralink/pinmux.c
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@@ -56,15 +56,19 @@ void ralink_pinmux(void)
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}
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}
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- of_property_read_string(np, "ralink,uartmux", &uart);
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+ uart = NULL;
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+ if (rt_pinmux.uart)
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+ of_property_read_string(np, "ralink,uartmux", &uart);
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+
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if (uart) {
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int m = ralink_mux_mask(uart, rt_pinmux.uart);
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- mode |= rt_pinmux.uart_mask << rt_pinmux.uart_shift;
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+
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if (m) {
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- mode &= ~(m << rt_pinmux.uart_shift);
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+ mode &= ~(rt_pinmux.uart_mask << rt_pinmux.uart_shift);
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+ mode |= m << rt_pinmux.uart_shift;
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pr_debug("pinmux: registered uartmux \"%s\"\n", uart);
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} else {
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- pr_debug("pinmux: registered uartmux \"gpio\"\n");
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+ pr_debug("pinmux: unknown uartmux \"%s\"\n", uart);
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}
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}
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