kernel: fix powerpc unused-but-set variables

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@30817 3c298f89-4303-0410-b956-a3cf2f4a3e73

diff --git a/target/linux/generic/patches-2.6.38/322-powerpc_unused_var.patch b/target/linux/generic/patches-2.6.38/322-powerpc_unused_var.patch
new file mode 100644 (file)
index 0000000..bbe48d5
--- /dev/null
+++ b/target/linux/generic/patches-2.6.38/322-powerpc_unused_var.patch
@@ -0,0 +1,61 @@
+--- a/arch/powerpc/kernel/align.c
++++ b/arch/powerpc/kernel/align.c
+@@ -701,7 +701,7 @@
+ 
+ int fix_alignment(struct pt_regs *regs)
+ {
+-      unsigned int instr, nb, flags, instruction = 0;
++      unsigned int instr, nb, flags, instruction __maybe_unused = 0;
+       unsigned int reg, areg;
+       unsigned int dsisr;
+       unsigned char __user *addr;
+--- a/arch/powerpc/kernel/signal_32.c
++++ b/arch/powerpc/kernel/signal_32.c
+@@ -935,7 +935,7 @@
+                    struct ucontext __user *new_ctx,
+                    int ctx_size, int r6, int r7, int r8, struct pt_regs *regs)
+ {
+-      unsigned char tmp;
++      unsigned char tmp __maybe_unused;
+       int ctx_has_vsx_region = 0;
+ 
+ #ifdef CONFIG_PPC64
+@@ -1076,7 +1076,7 @@
+ {
+       struct sig_dbg_op op;
+       int i;
+-      unsigned char tmp;
++      unsigned char tmp __maybe_unused;
+       unsigned long new_msr = regs->msr;
+ #ifdef CONFIG_PPC_ADV_DEBUG_REGS
+       unsigned long new_dbcr0 = current->thread.dbcr0;
+--- a/arch/powerpc/mm/mem.c
++++ b/arch/powerpc/mm/mem.c
+@@ -171,7 +171,7 @@
+       unsigned long start, bootmap_pages;
+       unsigned long total_pages;
+       struct memblock_region *reg;
+-      int boot_mapsize;
++      int boot_mapsize __maybe_unused;
+ 
+       max_low_pfn = max_pfn = memblock_end_of_DRAM() >> PAGE_SHIFT;
+       total_pages = (memblock_end_of_DRAM() - memstart_addr) >> PAGE_SHIFT;
+--- a/arch/powerpc/sysdev/qe_lib/qe_ic.c
++++ b/arch/powerpc/sysdev/qe_lib/qe_ic.c
+@@ -327,7 +327,7 @@
+ {
+       struct qe_ic *qe_ic;
+       struct resource res;
+-      u32 temp = 0, ret, high_active = 0;
++      u32 temp = 0, ret;
+ 
+       ret = of_address_to_resource(node, 0, &res);
+       if (ret)
+@@ -376,7 +376,6 @@
+       /* choose destination signal for highest priority interrupt */
+       if (flags & QE_IC_HIGH_SIGNAL) {
+               temp |= (SIGNAL_HIGH << CICR_HPIT_SHIFT);
+-              high_active = 1;
+       }
+ 
+       qe_ic_write(qe_ic->regs, QEIC_CICR, temp);