MIPS: AR7: Make ar7_register_devices much more durable

[Ralf: Fixed up the rejects and changed all the new printk(KERN_...); to
pr_xxx() as suggested by Wu.]

Signed-off-by: Alexander Clouter <alex@digriz.org.uk>
To: linux-mips@linux-mips.org
Patchwork: http://patchwork.linux-mips.org/patch/920/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

diff --git a/arch/mips/ar7/platform.c b/arch/mips/ar7/platform.c
index 65facecb3ffb6f25128445e6946d127306e618a7..246df7aca2e7147b762f6f069381e7d942c17e4a 100644 (file)
--- a/arch/mips/ar7/platform.c
+++ b/arch/mips/ar7/platform.c
@@ -529,115 +529,130 @@ static struct platform_device ar7_wdt = {
 /*****************************************************************************
  * Init
  ****************************************************************************/
-static int __init ar7_register_devices(void)
+static int __init ar7_register_uarts(void)
 {
-       u16 chip_id;
-       int res;
-       u32 *bootcr, val;
 #ifdef CONFIG_SERIAL_8250
-       static struct uart_port uart_port[2] __initdata;
+       static struct uart_port uart_port __initdata;
        struct clk *bus_clk;
+       int res;
 
-       memset(uart_port, 0, sizeof(struct uart_port) * 2);
+       memset(&uart_port, 0, sizeof(struct uart_port));
 
        bus_clk = clk_get(NULL, "bus");
        if (IS_ERR(bus_clk))
                panic("unable to get bus clk\n");
 
-       uart_port[0].type       = PORT_16550A;
-       uart_port[0].line       = 0;
-       uart_port[0].irq        = AR7_IRQ_UART0;
-       uart_port[0].uartclk    = clk_get_rate(bus_clk) / 2;
-       uart_port[0].iotype     = UPIO_MEM32;
-       uart_port[0].mapbase    = AR7_REGS_UART0;
-       uart_port[0].membase    = ioremap(uart_port[0].mapbase, 256);
-       uart_port[0].regshift   = 2;
-       res = early_serial_setup(&uart_port[0]);
+       uart_port.type          = PORT_16550A;
+       uart_port.uartclk       = clk_get_rate(bus_clk) / 2;
+       uart_port.iotype        = UPIO_MEM32;
+       uart_port.regshift      = 2;
+
+       uart_port.line          = 0;
+       uart_port.irq           = AR7_IRQ_UART0;
+       uart_port.mapbase       = AR7_REGS_UART0;
+       uart_port.membase       = ioremap(uart_port.mapbase, 256);
+
+       res = early_serial_setup(&uart_port);
        if (res)
                return res;
 
        /* Only TNETD73xx have a second serial port */
        if (ar7_has_second_uart()) {
-               uart_port[1].type       = PORT_16550A;
-               uart_port[1].line       = 1;
-               uart_port[1].irq        = AR7_IRQ_UART1;
-               uart_port[1].uartclk    = clk_get_rate(bus_clk) / 2;
-               uart_port[1].iotype     = UPIO_MEM32;
-               uart_port[1].mapbase    = UR8_REGS_UART1;
-               uart_port[1].membase    = ioremap(uart_port[1].mapbase, 256);
-               uart_port[1].regshift   = 2;
-               res = early_serial_setup(&uart_port[1]);
+               uart_port.line          = 1;
+               uart_port.irq           = AR7_IRQ_UART1;
+               uart_port.mapbase       = UR8_REGS_UART1;
+               uart_port.membase       = ioremap(uart_port.mapbase, 256);
+
+               res = early_serial_setup(&uart_port);
                if (res)
                        return res;
        }
-#endif /* CONFIG_SERIAL_8250 */
+#endif
+
+       return 0;
+}
+
+static int __init ar7_register_devices(void)
+{
+       void __iomem *bootcr;
+       u32 val;
+       u16 chip_id;
+       int res;
+
+       res = ar7_register_uarts();
+       if (res)
+               pr_err("unable to setup uart(s): %d\n", res);
+
        res = platform_device_register(&physmap_flash);
        if (res)
-               return res;
+               pr_warning("unable to register physmap-flash: %d\n", res);
 
        ar7_device_disable(vlynq_low_data.reset_bit);
        res = platform_device_register(&vlynq_low);
        if (res)
-               return res;
+               pr_warning("unable to register vlynq-low: %d\n", res);
 
        if (ar7_has_high_vlynq()) {
                ar7_device_disable(vlynq_high_data.reset_bit);
                res = platform_device_register(&vlynq_high);
                if (res)
-                       return res;
+                       pr_warning("unable to register vlynq-high: %d\n", res);
        }
 
        if (ar7_has_high_cpmac()) {
-               res = fixed_phy_add(PHY_POLL, cpmac_high.id, &fixed_phy_status);
-               if (res && res != -ENODEV)
-                       return res;
-               cpmac_get_mac(1, cpmac_high_data.dev_addr);
-               res = platform_device_register(&cpmac_high);
-               if (res)
-                       return res;
-       } else {
+               if (!res) {
+                       cpmac_get_mac(1, cpmac_high_data.dev_addr);
+
+                       res = platform_device_register(&cpmac_high);
+                       if (res)
+                               pr_warning("unable to register cpmac-high: %d\n", res);
+               } else
+                       pr_warning("unable to add cpmac-high phy: %d\n", res);
+       } else
                cpmac_low_data.phy_mask = 0xffffffff;
-       }
 
        res = fixed_phy_add(PHY_POLL, cpmac_low.id, &fixed_phy_status);
-       if (res && res != -ENODEV)
-               return res;
-
-       cpmac_get_mac(0, cpmac_low_data.dev_addr);
-       res = platform_device_register(&cpmac_low);
-       if (res)
-               return res;
+       if (!res) {
+               cpmac_get_mac(0, cpmac_low_data.dev_addr);
+               res = platform_device_register(&cpmac_low);
+               if (res)
+                       pr_warning("unable to register cpmac-low: %d\n", res);
+       } else
+               pr_warning("unable to add cpmac-low phy: %d\n", res);
 
        detect_leds();
        res = platform_device_register(&ar7_gpio_leds);
        if (res)
-               return res;
+               pr_warning("unable to register leds: %d\n", res);
 
        res = platform_device_register(&ar7_udc);
-
-       chip_id = ar7_chip_id();
-       switch (chip_id) {
-       case AR7_CHIP_7100:
-       case AR7_CHIP_7200:
-               ar7_wdt_res.start = AR7_REGS_WDT;
-               break;
-       case AR7_CHIP_7300:
-               ar7_wdt_res.start = UR8_REGS_WDT;
-               break;
-       default:
-               break;
-       }
-
-       ar7_wdt_res.end = ar7_wdt_res.start + 0x20;
-
-       bootcr = (u32 *)ioremap_nocache(AR7_REGS_DCL, 4);
-       val = *bootcr;
-       iounmap(bootcr);
+       if (res)
+               pr_warning("unable to register usb slave: %d\n", res);
 
        /* Register watchdog only if enabled in hardware */
-       if (val & AR7_WDT_HW_ENA)
+       bootcr = ioremap_nocache(AR7_REGS_DCL, 4);
+       val = readl(bootcr);
+       iounmap(bootcr);
+       if (val & AR7_WDT_HW_ENA) {
+               chip_id = ar7_chip_id();
+               switch (chip_id) {
+               case AR7_CHIP_7100:
+               case AR7_CHIP_7200:
+                       ar7_wdt_res.start = AR7_REGS_WDT;
+                       break;
+               case AR7_CHIP_7300:
+                       ar7_wdt_res.start = UR8_REGS_WDT;
+                       break;
+               default:
+                       break;
+               }
+
+               ar7_wdt_res.end = ar7_wdt_res.start + 0x20;
                res = platform_device_register(&ar7_wdt);
+               if (res)
+                       pr_warning("unable to register watchdog: %d\n", res);
+       }
 
-       return res;
+       return 0;
 }
 arch_initcall(ar7_register_devices);