powerpc/cpm: Reintroduce global spi_pram struct (fixes build issue)

spi_t was removed in commit 644b2a680ccc51a9ec4d6beb12e9d47d2dee98e2
("powerpc/cpm: Remove SPI defines and spi structs"), the commit assumed
that spi_t isn't used anywhere outside of the spi_mpc8xxx driver. But
it appears that the struct is needed for micropatch code. So, let's
reintroduce the struct.

Fixes the following build issue:

    CC      arch/powerpc/sysdev/micropatch.o
  micropatch.c: In function 'cpm_load_patch':
  micropatch.c:629: error: expected '=', ',', ';', 'asm' or '__attribute__' before '*' token
  micropatch.c:629: error: 'spp' undeclared (first use in this function)
  micropatch.c:629: error: (Each undeclared identifier is reported only once
  micropatch.c:629: error: for each function it appears in.)

Reported-by: LEROY Christophe <christophe.leroy@c-s.fr>
Reported-by: Tony Breeds <tony@bakeyournoodle.com>
Cc: <stable@kernel.org> [ .33, .34 ]
Signed-off-by: Anton Vorontsov <avorontsov@mvista.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>

2 files changed, 28 insertions, 3 deletions

diff --git a/arch/powerpc/include/asm/cpm.h b/arch/powerpc/include/asm/cpm.h
index 0835eb977ba..e50323fe941 100644
--- a/arch/powerpc/include/asm/cpm.h
+++ b/arch/powerpc/include/asm/cpm.h
@@ -7,6 +7,30 @@
 #include <linux/of.h>
 
 /*
+ * SPI Parameter RAM common to QE and CPM.
+ */
+struct spi_pram {
+        __be16  rbase;  /* Rx Buffer descriptor base address */
+        __be16  tbase;  /* Tx Buffer descriptor base address */
+        u8      rfcr;   /* Rx function code */
+        u8      tfcr;   /* Tx function code */
+        __be16  mrblr;  /* Max receive buffer length */
+        __be32  rstate; /* Internal */
+        __be32  rdp;    /* Internal */
+        __be16  rbptr;  /* Internal */
+        __be16  rbc;    /* Internal */
+        __be32  rxtmp;  /* Internal */
+        __be32  tstate; /* Internal */
+        __be32  tdp;    /* Internal */
+        __be16  tbptr;  /* Internal */
+        __be16  tbc;    /* Internal */
+        __be32  txtmp;  /* Internal */
+        __be32  res;    /* Tx temp. */
+        __be16  rpbase; /* Relocation pointer (CPM1 only) */
+        __be16  res1;   /* Reserved */
+};
+
+/*
  * USB Controller pram common to QE and CPM.
  */
 struct usb_ctlr {
diff --git a/arch/powerpc/sysdev/micropatch.c b/arch/powerpc/sysdev/micropatch.c
index d8d60284075..18080f376e1 100644
--- a/arch/powerpc/sysdev/micropatch.c
+++ b/arch/powerpc/sysdev/micropatch.c
@@ -16,6 +16,7 @@
 #include <asm/page.h>
 #include <asm/pgtable.h>
 #include <asm/8xx_immap.h>
+#include <asm/cpm.h>
 #include <asm/cpm1.h>
 
 /*
@@ -626,7 +627,7 @@ cpm_load_patch(cpm8xx_t	*cp)
         volatile uint           *dp;            /* Dual-ported RAM. */
         volatile cpm8xx_t       *commproc;
         volatile iic_t          *iip;
-        volatile spi_t          *spp;
+        volatile struct spi_pram *spp;
         volatile smc_uart_t     *smp;
         int     i;
 
@@ -668,8 +669,8 @@ cpm_load_patch(cpm8xx_t	*cp)
         /* Put SPI above the IIC, also 32-byte aligned.
         */
         i = (RPBASE + sizeof(iic_t) + 31) & ~31;
-        spp = (spi_t *)&commproc->cp_dparam[PROFF_SPI];
-        spp->spi_rpbase = i;
+        spp = (struct spi_pram *)&commproc->cp_dparam[PROFF_SPI];
+        spp->rpbase = i;
 
 # if defined(CONFIG_I2C_SPI_UCODE_PATCH)
         commproc->cp_cpmcr1 = 0x802a;