From: Marcelo Tosatti <marcelo.tosatti@cyclades.com>
Date: Wed, 27 Jul 2005 18:46:01 +0000 (-0700)
Subject: [PATCH] cpm_uart: use DPRAM for early console
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=4e4b7952cd34af4dd78e012265d4bc858db6adf3;p=GitHub%2FLineageOS%2Fandroid_kernel_samsung_universal7580.git

[PATCH] cpm_uart: use DPRAM for early console

m8xx_cpm_hostalloc() can't rely on using the coherent DMA allocator early
on boot because the VM is not fully up yet.  Change it to use the on-board
DPRAM instead.

The current code relies on the "bootmem_page" allocated by
m8xx_cpm_reset(), which must be killed.

This is done in v2.4 but has never been forward ported to v2.6.

Signed-off-by: Marcelo Tosatti <marcelo.tosatti@cyclades.com>
Cc: Pantelis Antoniou <panto@intracom.gr>
Cc: Kumar Gala <kumar.gala@freescale.com>
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/drivers/serial/cpm_uart/cpm_uart_cpm1.c b/drivers/serial/cpm_uart/cpm_uart_cpm1.c
index 7911912f50c..8efbd6d1d6a 100644
--- a/drivers/serial/cpm_uart/cpm_uart_cpm1.c
+++ b/drivers/serial/cpm_uart/cpm_uart_cpm1.c
@@ -185,7 +185,7 @@ int cpm_uart_allocbuf(struct uart_cpm_port *pinfo, unsigned int is_con)
 	memsz = L1_CACHE_ALIGN(pinfo->rx_nrfifos * pinfo->rx_fifosize) +
 	    L1_CACHE_ALIGN(pinfo->tx_nrfifos * pinfo->tx_fifosize);
 	if (is_con) {
-		mem_addr = (u8 *) m8xx_cpm_hostalloc(memsz);
+		mem_addr = (u8 *) cpm_dpram_addr(cpm_dpalloc(memsz, 8));
 		dma_addr = 0;
 	} else
 		mem_addr = dma_alloc_coherent(NULL, memsz, &dma_addr,