[PATCH] uml: Use ARRAY_SIZE more assiduously

There were a bunch of missed ARRAY_SIZE opportunities.

Also, some formatting fixes in the affected areas of code.

Signed-off-by: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

11 files changed, 25 insertions, 32 deletions

diff --git a/arch/um/drivers/chan_kern.c b/arch/um/drivers/chan_kern.c
index 7218c754505b..e82764f75e7f 100644
--- a/arch/um/drivers/chan_kern.c
+++ b/arch/um/drivers/chan_kern.c
@@ -544,7 +544,7 @@ static struct chan *parse_chan(struct line *line, char *str, int device,
 
         ops = NULL;
         data = NULL;
-        for(i = 0; i < sizeof(chan_table)/sizeof(chan_table[0]); i++){
+        for(i = 0; i < ARRAY_SIZE(chan_table); i++){
                 entry = &chan_table[i];
                 if(!strncmp(str, entry->key, strlen(entry->key))){
                         ops = entry->ops;
diff --git a/arch/um/drivers/mconsole_kern.c b/arch/um/drivers/mconsole_kern.c
index b414522f7686..79610b5ce67e 100644
--- a/arch/um/drivers/mconsole_kern.c
+++ b/arch/um/drivers/mconsole_kern.c
@@ -497,7 +497,7 @@ static void mconsole_get_config(int (*get_config)(char *, char *, int,
         }
 
         error = NULL;
-        size = sizeof(default_buf)/sizeof(default_buf[0]);
+        size = ARRAY_SIZE(default_buf);
         buf = default_buf;
 
         while(1){
diff --git a/arch/um/drivers/mconsole_user.c b/arch/um/drivers/mconsole_user.c
index 9bfd405c3bd8..5b2f5fe9e426 100644
--- a/arch/um/drivers/mconsole_user.c
+++ b/arch/um/drivers/mconsole_user.c
@@ -16,6 +16,7 @@
 #include "user.h"
 #include "mconsole.h"
 #include "umid.h"
+#include "user_util.h"
 
 static struct mconsole_command commands[] = {
         /* With uts namespaces, uts information becomes process-specific, so
@@ -65,14 +66,14 @@ static struct mconsole_command *mconsole_parse(struct mc_request *req)
         struct mconsole_command *cmd;
         int i;
 
-        for(i=0;i<sizeof(commands)/sizeof(commands[0]);i++){
+        for(i = 0; i < ARRAY_SIZE(commands); i++){
                 cmd = &commands[i];
                 if(!strncmp(req->request.data, cmd->command, 
                             strlen(cmd->command))){
-                        return(cmd);
+                        return cmd;
                 }
         }
-        return(NULL);
+        return NULL;
 }
 
 #define MIN(a,b) ((a)<(b) ? (a):(b))
diff --git a/arch/um/drivers/pcap_kern.c b/arch/um/drivers/pcap_kern.c
index 466ff2c2f918..4c767c7adb96 100644
--- a/arch/um/drivers/pcap_kern.c
+++ b/arch/um/drivers/pcap_kern.c
@@ -76,7 +76,7 @@ int pcap_setup(char *str, char **mac_out, void *data)
         if(host_if != NULL)
                 init->host_if = host_if;
 
-        for(i = 0; i < sizeof(options)/sizeof(options[0]); i++){
+        for(i = 0; i < ARRAY_SIZE(options); i++){
                 if(options[i] == NULL)
                         continue;
                 if(!strcmp(options[i], "promisc"))
diff --git a/arch/um/kernel/mem.c b/arch/um/kernel/mem.c
index b1cd5c6e468b..93121c6d26e5 100644
--- a/arch/um/kernel/mem.c
+++ b/arch/um/kernel/mem.c
@@ -223,8 +223,9 @@ void paging_init(void)
 
         empty_zero_page = (unsigned long *) alloc_bootmem_low_pages(PAGE_SIZE);
         empty_bad_page = (unsigned long *) alloc_bootmem_low_pages(PAGE_SIZE);
-        for(i=0;i<sizeof(zones_size)/sizeof(zones_size[0]);i++) 
+        for(i = 0; i < ARRAY_SIZE(zones_size); i++)
                 zones_size[i] = 0;
+
         zones_size[ZONE_DMA] = (end_iomem >> PAGE_SHIFT) - (uml_physmem >> PAGE_SHIFT);
 #ifdef CONFIG_HIGHMEM
         zones_size[ZONE_HIGHMEM] = highmem >> PAGE_SHIFT;
diff --git a/arch/um/kernel/reboot.c b/arch/um/kernel/reboot.c
index 3ef73bf2e781..f602623644aa 100644
--- a/arch/um/kernel/reboot.c
+++ b/arch/um/kernel/reboot.c
@@ -22,7 +22,7 @@ static void kill_idlers(int me)
         struct task_struct *p;
         int i;
 
-        for(i = 0; i < sizeof(idle_threads)/sizeof(idle_threads[0]); i++){
+        for(i = 0; i < ARRAY_SIZE(idle_threads); i++){
                 p = idle_threads[i];
                 if((p != NULL) && (p->thread.mode.tt.extern_pid != me))
                         os_kill_process(p->thread.mode.tt.extern_pid, 0);
@@ -62,14 +62,3 @@ void machine_halt(void)
 {
         machine_power_off();
 }
-
-/*
- * Overrides for Emacs so that we follow Linus's tabbing style.
- * Emacs will notice this stuff at the end of the file and automatically
- * adjust the settings for this buffer only.  This must remain at the end
- * of the file.
- * ---------------------------------------------------------------------------
- * Local variables:
- * c-file-style: "linux"
- * End:
- */
diff --git a/arch/um/kernel/tlb.c b/arch/um/kernel/tlb.c
index f5b0636f9ad7..cca330edf717 100644
--- a/arch/um/kernel/tlb.c
+++ b/arch/um/kernel/tlb.c
@@ -137,10 +137,11 @@ void fix_range_common(struct mm_struct *mm, unsigned long start_addr,
         int r, w, x;
         struct host_vm_op ops[1];
         void *flush = NULL;
-        int op_index = -1, last_op = sizeof(ops) / sizeof(ops[0]) - 1;
+        int op_index = -1, last_op = ARRAY_SIZE(ops) - 1;
         int ret = 0;
 
-        if(mm == NULL) return;
+        if(mm == NULL)
+                return;
 
         ops[0].type = NONE;
         for(addr = start_addr; addr < end_addr && !ret;){
diff --git a/arch/um/os-Linux/mem.c b/arch/um/os-Linux/mem.c
index 560c8063c77c..b170b4704dc4 100644
--- a/arch/um/os-Linux/mem.c
+++ b/arch/um/os-Linux/mem.c
@@ -114,14 +114,14 @@ static void which_tmpdir(void)
         }
 
         while(1){
-                found = next(fd, buf, sizeof(buf) / sizeof(buf[0]), ' ');
+                found = next(fd, buf, ARRAY_SIZE(buf), ' ');
                 if(found != 1)
                         break;
 
                 if(!strncmp(buf, "/dev/shm", strlen("/dev/shm")))
                         goto found;
 
-                found = next(fd, buf, sizeof(buf) / sizeof(buf[0]), '\n');
+                found = next(fd, buf, ARRAY_SIZE(buf), '\n');
                 if(found != 1)
                         break;
         }
@@ -135,7 +135,7 @@ err:
         return;
 
 found:
-        found = next(fd, buf, sizeof(buf) / sizeof(buf[0]), ' ');
+        found = next(fd, buf, ARRAY_SIZE(buf), ' ');
         if(found != 1)
                 goto err;
 
diff --git a/arch/um/sys-i386/bugs.c b/arch/um/sys-i386/bugs.c
index 41b0ab2fe830..f1bcd399ac90 100644
--- a/arch/um/sys-i386/bugs.c
+++ b/arch/um/sys-i386/bugs.c
@@ -13,6 +13,7 @@
 #include "sysdep/ptrace.h"
 #include "task.h"
 #include "os.h"
+#include "user_util.h"
 
 #define MAXTOKEN 64
 
@@ -104,17 +105,17 @@ int cpu_feature(char *what, char *buf, int len)
 static int check_cpu_flag(char *feature, int *have_it)
 {
         char buf[MAXTOKEN], c;
-        int fd, len = sizeof(buf)/sizeof(buf[0]);
+        int fd, len = ARRAY_SIZE(buf);
 
         printk("Checking for host processor %s support...", feature);
         fd = os_open_file("/proc/cpuinfo", of_read(OPENFLAGS()), 0);
         if(fd < 0){
                 printk("Couldn't open /proc/cpuinfo, err = %d\n", -fd);
-                return(0);
+                return 0;
         }
 
         *have_it = 0;
-        if(!find_cpuinfo_line(fd, "flags", buf, sizeof(buf) / sizeof(buf[0])))
+        if(!find_cpuinfo_line(fd, "flags", buf, ARRAY_SIZE(buf)))
                 goto out;
 
         c = token(fd, buf, len - 1, ' ');
@@ -138,7 +139,7 @@ static int check_cpu_flag(char *feature, int *have_it)
         if(*have_it == 0) printk("No\n");
         else if(*have_it == 1) printk("Yes\n");
         os_close_file(fd);
-        return(1);
+        return 1;
 }
 
 #if 0 /* This doesn't work in tt mode, plus it's causing compilation problems
diff --git a/arch/um/sys-i386/ldt.c b/arch/um/sys-i386/ldt.c
index fe0877b3509c..69971b78beaf 100644
--- a/arch/um/sys-i386/ldt.c
+++ b/arch/um/sys-i386/ldt.c
@@ -424,9 +424,8 @@ void ldt_get_host_info(void)
                         size++;
         }
 
-        if(size < sizeof(dummy_list)/sizeof(dummy_list[0])) {
+        if(size < ARRAY_SIZE(dummy_list))
                 host_ldt_entries = dummy_list;
-        }
         else {
                 size = (size + 1) * sizeof(dummy_list[0]);
                 host_ldt_entries = (short *)kmalloc(size, GFP_KERNEL);
diff --git a/arch/um/sys-i386/ptrace_user.c b/arch/um/sys-i386/ptrace_user.c
index 40aa88531446..5f3cc6685820 100644
--- a/arch/um/sys-i386/ptrace_user.c
+++ b/arch/um/sys-i386/ptrace_user.c
@@ -15,6 +15,7 @@
 #include "user.h"
 #include "os.h"
 #include "uml-config.h"
+#include "user_util.h"
 
 int ptrace_getregs(long pid, unsigned long *regs_out)
 {
@@ -51,7 +52,7 @@ static void write_debugregs(int pid, unsigned long *regs)
         int nregs, i;
 
         dummy = NULL;
-        nregs = sizeof(dummy->u_debugreg)/sizeof(dummy->u_debugreg[0]);
+        nregs = ARRAY_SIZE(dummy->u_debugreg);
         for(i = 0; i < nregs; i++){
                 if((i == 4) || (i == 5)) continue;
                 if(ptrace(PTRACE_POKEUSR, pid, &dummy->u_debugreg[i],
@@ -68,7 +69,7 @@ static void read_debugregs(int pid, unsigned long *regs)
         int nregs, i;
 
         dummy = NULL;
-        nregs = sizeof(dummy->u_debugreg)/sizeof(dummy->u_debugreg[0]);
+        nregs = ARRAY_SIZE(dummy->u_debugreg);
         for(i = 0; i < nregs; i++){
                 regs[i] = ptrace(PTRACE_PEEKUSR, pid,
                                  &dummy->u_debugreg[i], 0);