[PATCH 3/5] powerpc/zImage: Check compatible at driver init

[Oliver O'Halloran]

Have each driver's init function check the compatible string
of the node given by the stdout path. This gives the drivers
a more traditional probe-also-inits structure.

Signed-off-by: Oliver O'Halloran <ooh...@gmail.com>
---
 arch/powerpc/boot/cpm-serial.c  | 2 ++
 arch/powerpc/boot/mpc52xx-psc.c | 3 +++
 arch/powerpc/boot/mpsc.c        | 3 +++
 arch/powerpc/boot/ns16550.c     | 4 ++++
 arch/powerpc/boot/opal.c        | 3 +++
 arch/powerpc/boot/uartlite.c    | 5 +++++
 6 files changed, 20 insertions(+)

diff --git a/arch/powerpc/boot/cpm-serial.c b/arch/powerpc/boot/cpm-serial.c
index dfb56829cace..f6b1cf23946e 100644
--- a/arch/powerpc/boot/cpm-serial.c
+++ b/arch/powerpc/boot/cpm-serial.c
@@ -212,6 +212,8 @@ int cpm_console_init(void *devp, struct serial_console_data 
*scdp)
        } else if (dt_is_compatible(devp, "fsl,cpm2-smc-uart")) {
                is_cpm2 = 1;
                is_smc = 1;
+       } else if (!dt_is_compatible(devp, "fsl,cpm1-scc-uart")) {
+               return 1; /* not compatible */
        }
 
        if (is_smc) {
diff --git a/arch/powerpc/boot/mpc52xx-psc.c b/arch/powerpc/boot/mpc52xx-psc.c
index c2c08633ee35..75470936e661 100644
--- a/arch/powerpc/boot/mpc52xx-psc.c
+++ b/arch/powerpc/boot/mpc52xx-psc.c
@@ -52,6 +52,9 @@ static unsigned char psc_getc(void)
 
 int mpc5200_psc_console_init(void *devp, struct serial_console_data *scdp)
 {
+       if (!dt_is_compatible(devp, "fsl,mpc5200-psc-uart"))
+               return 1;
+
        /* Get the base address of the psc registers */
        if (dt_get_virtual_reg(devp, &psc, 1) < 1)
                return -1;
diff --git a/arch/powerpc/boot/mpsc.c b/arch/powerpc/boot/mpsc.c
index 425ad88cce8d..59e23e886440 100644
--- a/arch/powerpc/boot/mpsc.c
+++ b/arch/powerpc/boot/mpsc.c
@@ -128,6 +128,9 @@ int mpsc_console_init(void *devp, struct 
serial_console_data *scdp)
        int n, reg_set;
        volatile char *sdma_base;
 
+       if (!dt_is_compatible(devp, "marvell,mv64360-mpsc"))
+               return 1;
+
        n = getprop(devp, "virtual-reg", &v, sizeof(v));
        if (n != sizeof(v))
                goto err_out;
diff --git a/arch/powerpc/boot/ns16550.c b/arch/powerpc/boot/ns16550.c
index b0da4466d419..0e7bd5284255 100644
--- a/arch/powerpc/boot/ns16550.c
+++ b/arch/powerpc/boot/ns16550.c
@@ -58,6 +58,10 @@ int ns16550_console_init(void *devp, struct 
serial_console_data *scdp)
        int n;
        u32 reg_offset;
 
+       if (!dt_is_compatible(devp, "ns16550") &&
+           !dt_is_compatible(devp, "pnpPNP,501"))
+               return 1;
+
        if (dt_get_virtual_reg(devp, (void **)&reg_base, 1) < 1)
                return -1;
 
diff --git a/arch/powerpc/boot/opal.c b/arch/powerpc/boot/opal.c
index dfb199ef5b94..0e92537536b9 100644
--- a/arch/powerpc/boot/opal.c
+++ b/arch/powerpc/boot/opal.c
@@ -83,6 +83,9 @@ static void opal_init(void)
 
 int opal_console_init(void *devp, struct serial_console_data *scdp)
 {
+       if (!dt_is_compatible(devp, "ibm,opal-console-raw"))
+               return 1;
+
        opal_init();
 
        if (devp) {
diff --git a/arch/powerpc/boot/uartlite.c b/arch/powerpc/boot/uartlite.c
index 46bed69b4169..fc66a5fcea66 100644
--- a/arch/powerpc/boot/uartlite.c
+++ b/arch/powerpc/boot/uartlite.c
@@ -62,6 +62,11 @@ int uartlite_console_init(void *devp, struct 
serial_console_data *scdp)
        int n;
        unsigned long reg_phys;
 
+
+       if (!dt_is_compatible(devp, "xlnx,opb-uartlite-1.00.b") &&
+           !dt_is_compatible(devp, "xlnx,xps-uartlite-1.00.a"))
+               return 1;
+
        n = getprop(devp, "virtual-reg", &reg_base, sizeof(reg_base));
        if (n != sizeof(reg_base)) {
                if (!dt_xlate_reg(devp, 0, &reg_phys, NULL))
-- 
2.9.5