[PATCH] ppc32: In the boot code, don't rely on BASE_BAUD directly

Modifies serial_init to get base baud rate from the rs_table entry instead
of BAUD_BASE.  This patch eliminates duplication between the
SERIAL_PORT_DFNS macro and BAUD_BASE.  Without the patch, if a port set the
baud rate in SERIAL_PORT_DFNS, but did not update BASE_BAUD, the BASE_BAUD
value would still be used.

Signed-off-by: Grant Likely <grant.likely@gdcanada.com>
Signed-off-by: Tom Rini <trini@kernel.crashing.org>
Cc: Russell King <rmk@arm.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

diff --git a/arch/ppc/boot/common/ns16550.c b/arch/ppc/boot/common/ns16550.c
index 9017c54..26818bb 100644 (file)
--- a/arch/ppc/boot/common/ns16550.c
+++ b/arch/ppc/boot/common/ns16550.c
@@ -23,7 +23,7 @@ static int shift;
 
 unsigned long serial_init(int chan, void *ignored)
 {
-       unsigned long com_port;
+       unsigned long com_port, base_baud;
        unsigned char lcr, dlm;
 
        /* We need to find out which type io we're expecting.  If it's
@@ -43,6 +43,8 @@ unsigned long serial_init(int chan, void *ignored)
 
        /* How far apart the registers are. */
        shift = rs_table[chan].iomem_reg_shift;
+       /* Base baud.. */
+       base_baud = rs_table[chan].baud_base;
        
        /* save the LCR */
        lcr = inb(com_port + (UART_LCR << shift));
@@ -62,9 +64,9 @@ unsigned long serial_init(int chan, void *ignored)
        else {
                /* Input clock. */
                outb(com_port + (UART_DLL << shift),
-                    (BASE_BAUD / SERIAL_BAUD) & 0xFF);
+                    (base_baud / SERIAL_BAUD) & 0xFF);
                outb(com_port + (UART_DLM << shift),
-                    (BASE_BAUD / SERIAL_BAUD) >> 8);
+                    (base_baud / SERIAL_BAUD) >> 8);
                /* 8 data, 1 stop, no parity */
                outb(com_port + (UART_LCR << shift), 0x03);
                /* RTS/DTR */