[PATCH] powerpc: fix various sparse warnings

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>

8 files changed, 19 insertions, 14 deletions

diff --git a/arch/powerpc/kernel/legacy_serial.c b/arch/powerpc/kernel/legacy_serial.c
index c7a799a09516..09d9c825fa9c 100644
--- a/arch/powerpc/kernel/legacy_serial.c
+++ b/arch/powerpc/kernel/legacy_serial.c
@@ -37,7 +37,7 @@ static int legacy_serial_console = -1;
 static int __init add_legacy_port(struct device_node *np, int want_index,
                                   int iotype, phys_addr_t base,
                                   phys_addr_t taddr, unsigned long irq,
-                                  unsigned int flags)
+                                  upf_t flags)
 {
         u32 *clk, *spd, clock = BASE_BAUD * 16;
         int index;
@@ -113,7 +113,7 @@ static int __init add_legacy_soc_port(struct device_node *np,
 {
         phys_addr_t addr;
         u32 *addrp;
-        unsigned int flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST | UPF_SHARE_IRQ;
+        upf_t flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST | UPF_SHARE_IRQ;
 
         /* We only support ports that have a clock frequency properly
          * encoded in the device-tree.
diff --git a/arch/powerpc/kernel/nvram_64.c b/arch/powerpc/kernel/nvram_64.c
index fd7db8d542db..6c3989f6247d 100644
--- a/arch/powerpc/kernel/nvram_64.c
+++ b/arch/powerpc/kernel/nvram_64.c
@@ -174,8 +174,9 @@ static int dev_nvram_ioctl(struct inode *inode, struct file *file,
                 return 0;
         }
 #endif /* CONFIG_PPC_PMAC */
+        default:
+                return -EINVAL;
         }
-        return -EINVAL;
 }
 
 struct file_operations nvram_fops = {
diff --git a/arch/powerpc/kernel/process.c b/arch/powerpc/kernel/process.c
index f698aa77127e..995b14688d3a 100644
--- a/arch/powerpc/kernel/process.c
+++ b/arch/powerpc/kernel/process.c
@@ -362,7 +362,11 @@ static void show_instructions(struct pt_regs *regs)
                 if (!(i % 8))
                         printk("\n");
 
-                if (BAD_PC(pc) || __get_user(instr, (unsigned int *)pc)) {
+                /* We use __get_user here *only* to avoid an OOPS on a
+                 * bad address because the pc *should* only be a
+                 * kernel address.
+                 */
+                if (BAD_PC(pc) || __get_user(instr, (unsigned int __user *)pc)) {
                         printk("XXXXXXXX ");
                 } else {
                         if (regs->nip == pc)
diff --git a/arch/powerpc/kernel/setup_32.c b/arch/powerpc/kernel/setup_32.c
index dc2770df25b3..676f894c3380 100644
--- a/arch/powerpc/kernel/setup_32.c
+++ b/arch/powerpc/kernel/setup_32.c
@@ -111,7 +111,7 @@ unsigned long __init early_init(unsigned long dt_ptr)
 
         /* First zero the BSS -- use memset_io, some platforms don't have
          * caches on yet */
-        memset_io(PTRRELOC(&__bss_start), 0, _end - __bss_start);
+        memset_io((void __iomem *)PTRRELOC(&__bss_start), 0, _end - __bss_start);
 
         /*
          * Identify the CPU type and fix up code sections
diff --git a/arch/powerpc/lib/sstep.c b/arch/powerpc/lib/sstep.c
index 666c2aa55016..c251d9936612 100644
--- a/arch/powerpc/lib/sstep.c
+++ b/arch/powerpc/lib/sstep.c
@@ -18,7 +18,7 @@ extern char system_call_common[];
 
 #ifdef CONFIG_PPC64
 /* Bits in SRR1 that are copied from MSR */
-#define MSR_MASK        0xffffffff87c0ffff
+#define MSR_MASK        0xffffffff87c0ffffUL
 #else
 #define MSR_MASK        0x87c0ffff
 #endif
diff --git a/arch/powerpc/platforms/powermac/bootx_init.c b/arch/powerpc/platforms/powermac/bootx_init.c
index fa8b4d7b5ded..a94571be65ca 100644
--- a/arch/powerpc/platforms/powermac/bootx_init.c
+++ b/arch/powerpc/platforms/powermac/bootx_init.c
@@ -493,7 +493,7 @@ void __init bootx_init(unsigned long r3, unsigned long r4)
                     && (strcmp(model, "iMac,1") == 0
                         || strcmp(model, "PowerMac1,1") == 0)) {
                         bootx_printf("iMac,1 detected, shutting down USB \n");
-                        out_le32((unsigned *)0x80880008, 1);    /* XXX */
+                        out_le32((unsigned __iomem *)0x80880008, 1);    /* XXX */
                 }
         }
 
diff --git a/arch/powerpc/platforms/powermac/nvram.c b/arch/powerpc/platforms/powermac/nvram.c
index 5fd28995c74c..3aa3477b86f7 100644
--- a/arch/powerpc/platforms/powermac/nvram.c
+++ b/arch/powerpc/platforms/powermac/nvram.c
@@ -74,7 +74,7 @@ struct core99_header {
  * Read and write the non-volatile RAM on PowerMacs and CHRP machines.
  */
 static int nvram_naddrs;
-static volatile unsigned char *nvram_data;
+static volatile unsigned char __iomem *nvram_data;
 static int is_core_99;
 static int core99_bank = 0;
 static int nvram_partitions[3];
@@ -148,7 +148,7 @@ static ssize_t core99_nvram_size(void)
 }
 
 #ifdef CONFIG_PPC32
-static volatile unsigned char *nvram_addr;
+static volatile unsigned char __iomem *nvram_addr;
 static int nvram_mult;
 
 static unsigned char direct_nvram_read_byte(int addr)
@@ -285,7 +285,7 @@ static int sm_erase_bank(int bank)
         int stat, i;
         unsigned long timeout;
 
-        u8* base = (u8 *)nvram_data + core99_bank*NVRAM_SIZE;
+        u8 __iomem *base = (u8 __iomem *)nvram_data + core99_bank*NVRAM_SIZE;
 
         DBG("nvram: Sharp/Micron Erasing bank %d...\n", bank);
 
@@ -317,7 +317,7 @@ static int sm_write_bank(int bank, u8* datas)
         int i, stat = 0;
         unsigned long timeout;
 
-        u8* base = (u8 *)nvram_data + core99_bank*NVRAM_SIZE;
+        u8 __iomem *base = (u8 __iomem *)nvram_data + core99_bank*NVRAM_SIZE;
 
         DBG("nvram: Sharp/Micron Writing bank %d...\n", bank);
 
@@ -352,7 +352,7 @@ static int amd_erase_bank(int bank)
         int i, stat = 0;
         unsigned long timeout;
 
-        u8* base = (u8 *)nvram_data + core99_bank*NVRAM_SIZE;
+        u8 __iomem *base = (u8 __iomem *)nvram_data + core99_bank*NVRAM_SIZE;
 
         DBG("nvram: AMD Erasing bank %d...\n", bank);
 
@@ -399,7 +399,7 @@ static int amd_write_bank(int bank, u8* datas)
         int i, stat = 0;
         unsigned long timeout;
 
-        u8* base = (u8 *)nvram_data + core99_bank*NVRAM_SIZE;
+        u8 __iomem *base = (u8 __iomem *)nvram_data + core99_bank*NVRAM_SIZE;
 
         DBG("nvram: AMD Writing bank %d...\n", bank);
 
diff --git a/arch/powerpc/platforms/powermac/udbg_scc.c b/arch/powerpc/platforms/powermac/udbg_scc.c
index c4352a8db644..b4fa9f03b461 100644
--- a/arch/powerpc/platforms/powermac/udbg_scc.c
+++ b/arch/powerpc/platforms/powermac/udbg_scc.c
@@ -116,7 +116,7 @@ void udbg_scc_init(int force_scc)
         /* Setup for 57600 8N1 */
         if (ch == ch_a)
                 addr += 0x20;
-        sccc = (volatile u8 * __iomem) ioremap(addr & PAGE_MASK, PAGE_SIZE) ;
+        sccc = ioremap(addr & PAGE_MASK, PAGE_SIZE) ;
         sccc += addr & ~PAGE_MASK;
         sccd = sccc + 0x10;