From: Christophe Leroy Date: Mon, 24 Sep 2012 06:20:18 +0000 (+0200) Subject: Powerpc 8xx CPM_UART maxidl should not depend on fifo size X-Git-Tag: firefly_0821_release~3680^2~1976^2~13 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=fbbb9d9646f04768d0176f75e7fc93d29457b5db;p=firefly-linux-kernel-4.4.55.git 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 Acked-by: Alan Cox Signed-off-by: Greg Kroah-Hartman --- 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);