From 37f0679964fa8a1c345accb4a36da09c07d3b6a3 Mon Sep 17 00:00:00 2001 From: Andreas Werner Date: Mon, 5 Oct 2015 19:23:14 +0200 Subject: [PATCH] tty: serial: men_z135_uart.c: use mcb memory region size instead of hardcoded one There is no need to hardcode the MEN_Z135_MEM_SIZE. The MCB subsystem already knowns the size which is located in the chameleon table. MCB parse the chameleon table to get the resources of each IP and provide the mcb_request_mem function to get those resources. Use mcb_request_mem to get the resources. This function also takes care of the memory region naming allocated by the driver for each of the instances. Signed-off-by: Andreas Werner Acked-by: Johannes Thumshirn Signed-off-by: Greg Kroah-Hartman --- drivers/tty/serial/men_z135_uart.c | 23 +++++++++++++++-------- 1 file changed, 15 insertions(+), 8 deletions(-) diff --git a/drivers/tty/serial/men_z135_uart.c b/drivers/tty/serial/men_z135_uart.c index b90e7b30468b..3141aa20843d 100644 --- a/drivers/tty/serial/men_z135_uart.c +++ b/drivers/tty/serial/men_z135_uart.c @@ -35,8 +35,6 @@ #define MEN_Z135_BAUD_REG 0x810 #define MEN_Z135_TIMEOUT 0x814 -#define MEN_Z135_MEM_SIZE 0x818 - #define IRQ_ID(x) ((x) & 0x1f) #define MEN_Z135_IER_RXCIEN BIT(0) /* RX Space IRQ */ @@ -124,6 +122,7 @@ MODULE_PARM_DESC(rx_timeout, "RX timeout. " struct men_z135_port { struct uart_port port; struct mcb_device *mdev; + struct resource *mem; unsigned char *rxbuf; u32 stat_reg; spinlock_t lock; @@ -734,22 +733,30 @@ static const char *men_z135_type(struct uart_port *port) static void men_z135_release_port(struct uart_port *port) { + struct men_z135_port *uart = to_men_z135(port); + iounmap(port->membase); port->membase = NULL; - release_mem_region(port->mapbase, MEN_Z135_MEM_SIZE); + mcb_release_mem(uart->mem); } static int men_z135_request_port(struct uart_port *port) { - int size = MEN_Z135_MEM_SIZE; + struct men_z135_port *uart = to_men_z135(port); + struct mcb_device *mdev = uart->mdev; + struct resource *mem; + + mem = mcb_request_mem(uart->mdev, dev_name(&mdev->dev)); + if (IS_ERR(mem)) + return PTR_ERR(mem); - if (!request_mem_region(port->mapbase, size, "men_z135_port")) - return -EBUSY; + port->mapbase = mem->start; + uart->mem = mem; - port->membase = ioremap(port->mapbase, MEN_Z135_MEM_SIZE); + port->membase = ioremap(mem->start, resource_size(mem)); if (port->membase == NULL) { - release_mem_region(port->mapbase, MEN_Z135_MEM_SIZE); + mcb_release_mem(mem); return -ENOMEM; } -- 2.39.5