Powerpc 8xx CPM_UART maxidl should not depend on fifo size

maxidl register was set to fifo size. There is no reason to set this
register to same value as fifo size. Setting it now to 0x10 by default
as in the UCC UART driver.

Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Acked-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/tty/serial/cpm_uart/cpm_uart_core.c b/drivers/tty/serial/cpm_uart/cpm_uart_core.c
index 46edc649b0b7311db0fab7415b5670da391b3328..7f6a1c7cb3def62579348c94facb204f50cd5d03 100644 (file)
--- a/drivers/tty/serial/cpm_uart/cpm_uart_core.c
+++ b/drivers/tty/serial/cpm_uart/cpm_uart_core.c
@@ -799,7 +799,7 @@ static void cpm_uart_init_scc(struct uart_cpm_port *pinfo)
        cpm_set_scc_fcr(sup);
 
        out_be16(&sup->scc_genscc.scc_mrblr, pinfo->rx_fifosize);
-       out_be16(&sup->scc_maxidl, pinfo->rx_fifosize);
+       out_be16(&sup->scc_maxidl, 0x10);
        out_be16(&sup->scc_brkcr, 1);
        out_be16(&sup->scc_parec, 0);
        out_be16(&sup->scc_frmec, 0);
@@ -873,7 +873,7 @@ static void cpm_uart_init_smc(struct uart_cpm_port *pinfo)
 
        /* Using idle character time requires some additional tuning.  */
        out_be16(&up->smc_mrblr, pinfo->rx_fifosize);
-       out_be16(&up->smc_maxidl, pinfo->rx_fifosize);
+       out_be16(&up->smc_maxidl, 0x10);
        out_be16(&up->smc_brklen, 0);
        out_be16(&up->smc_brkec, 0);
        out_be16(&up->smc_brkcr, 1);