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authorChristophe Leroy <christophe.leroy@c-s.fr>2012-09-24 08:20:18 +0200
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2012-09-26 13:39:39 -0700
commitfbbb9d9646f04768d0176f75e7fc93d29457b5db (patch)
treea5f97ba0fa04202f442c94a53047022ffd14dc55 /drivers/tty/serial/cpm_uart
parent59733ef7e510f6fd51a3dfc6f22ec1d3630a47b9 (diff)
downloadlinux-fbbb9d9646f04768d0176f75e7fc93d29457b5db.tar.bz2
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>
Diffstat (limited to 'drivers/tty/serial/cpm_uart')
-rw-r--r--drivers/tty/serial/cpm_uart/cpm_uart_core.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/tty/serial/cpm_uart/cpm_uart_core.c b/drivers/tty/serial/cpm_uart/cpm_uart_core.c
index 46edc649b0b7..7f6a1c7cb3de 100644
--- 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);