MIPS: octeon: Get rid of preprocessor directives around RESERVE32

Some of them were pointless because CONFIG_CAVIUM_RESERVE32 is now always
defined, some were not enough (Yu Zhao reported
"Failed to allocate CAVIUM_RESERVE32 memory area" error).

Removing the directives allows for compiler coverage of RESERVE32 code and
replacing one of [always-true] "ifdef" with a compiler conditional fixes
the [cosmetic] error message.

Fixes: 3e3114ac ("MIPS: Introduce CAVIUM_RESERVE32 Kconfig option")
Signed-off-by: Alexander Sverdlin <alexander.sverdlin@nokia.com>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>

arch/mips/cavium-octeon/executive/cvmx-cmd-queue.c

@@ -57,14 +57,11 @@ EXPORT_SYMBOL_GPL(__cvmx_cmd_queue_state_ptr);
 static cvmx_cmd_queue_result_t __cvmx_cmd_queue_init_state_ptr(void)
 {
 	char *alloc_name = "cvmx_cmd_queues";
-#if defined(CONFIG_CAVIUM_RESERVE32) && CONFIG_CAVIUM_RESERVE32
 	extern uint64_t octeon_reserve32_memory;
-#endif
 
 	if (likely(__cvmx_cmd_queue_state_ptr))
 		return CVMX_CMD_QUEUE_SUCCESS;
 
-#if defined(CONFIG_CAVIUM_RESERVE32) && CONFIG_CAVIUM_RESERVE32
 	if (octeon_reserve32_memory)
 		__cvmx_cmd_queue_state_ptr =
 		    cvmx_bootmem_alloc_named_range(sizeof(*__cvmx_cmd_queue_state_ptr),
@@ -73,7 +70,6 @@ static cvmx_cmd_queue_result_t __cvmx_cmd_queue_init_state_ptr(void)
 						   (CONFIG_CAVIUM_RESERVE32 <<
 						    20) - 1, 128, alloc_name);
 	else
-#endif
 		__cvmx_cmd_queue_state_ptr =
 		    cvmx_bootmem_alloc_named(sizeof(*__cvmx_cmd_queue_state_ptr),
 					    128,

arch/mips/cavium-octeon/setup.c

@@ -284,10 +284,8 @@ void octeon_crash_smp_send_stop(void)
 
 #endif /* CONFIG_KEXEC */
 
-#ifdef CONFIG_CAVIUM_RESERVE32
 uint64_t octeon_reserve32_memory;
 EXPORT_SYMBOL(octeon_reserve32_memory);
-#endif
 
 #ifdef CONFIG_KEXEC
 /* crashkernel cmdline parameter is parsed _after_ memory setup
@@ -666,9 +664,6 @@ void __init prom_init(void)
 	int i;
 	u64 t;
 	int argc;
-#ifdef CONFIG_CAVIUM_RESERVE32
-	int64_t addr = -1;
-#endif
 	/*
 	 * The bootloader passes a pointer to the boot descriptor in
 	 * $a3, this is available as fw_arg3.
@@ -783,7 +778,7 @@ void __init prom_init(void)
 		cvmx_write_csr(CVMX_LED_UDD_DATX(1), 0);
 		cvmx_write_csr(CVMX_LED_EN, 1);
 	}
-#ifdef CONFIG_CAVIUM_RESERVE32
+
 	/*
 	 * We need to temporarily allocate all memory in the reserve32
 	 * region. This makes sure the kernel doesn't allocate this
@@ -794,14 +789,16 @@ void __init prom_init(void)
 	 * Allocate memory for RESERVED32 aligned on 2MB boundary. This
 	 * is in case we later use hugetlb entries with it.
 	 */
-	addr = cvmx_bootmem_phy_named_block_alloc(CONFIG_CAVIUM_RESERVE32 << 20,
-						0, 0, 2 << 20,
-						"CAVIUM_RESERVE32", 0);
-	if (addr < 0)
-		pr_err("Failed to allocate CAVIUM_RESERVE32 memory area\n");
-	else
-		octeon_reserve32_memory = addr;
-#endif
+	if (CONFIG_CAVIUM_RESERVE32) {
+		int64_t addr =
+			cvmx_bootmem_phy_named_block_alloc(CONFIG_CAVIUM_RESERVE32 << 20,
+							   0, 0, 2 << 20,
+							   "CAVIUM_RESERVE32", 0);
+		if (addr < 0)
+			pr_err("Failed to allocate CAVIUM_RESERVE32 memory area\n");
+		else
+			octeon_reserve32_memory = addr;
+	}
 
 #ifdef CONFIG_CAVIUM_OCTEON_LOCK_L2
 	if (cvmx_read_csr(CVMX_L2D_FUS3) & (3ull << 34)) {
@@ -1079,7 +1076,6 @@ void __init plat_mem_setup(void)
 	cvmx_bootmem_unlock();
 #endif /* CONFIG_CRASH_DUMP */
 
-#ifdef CONFIG_CAVIUM_RESERVE32
 	/*
 	 * Now that we've allocated the kernel memory it is safe to
 	 * free the reserved region. We free it here so that builtin
@@ -1087,7 +1083,6 @@ void __init plat_mem_setup(void)
 	 */
 	if (octeon_reserve32_memory)
 		cvmx_bootmem_free_named("CAVIUM_RESERVE32");
-#endif /* CONFIG_CAVIUM_RESERVE32 */
 
 	if (total == 0)
 		panic("Unable to allocate memory from "