Commit 4e4b7952 authored Jul 27, 2005 by Marcelo Tosatti Committed by Linus Torvalds Jul 27, 2005

[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>

parent 6ddcc919

drivers/serial/cpm_uart/cpm_uart_cpm1.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -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,