mtd: mtdoops: several minor cleanups

While looking into the mtdoops module, I've spotted several minor
imperfections. This patch addresses them. Namely:

1. Remove several trailing white-spaces and tabs
2. Check 'vmalloc()' return code straight away, not several lines
   below in the 'mtdoops_console_init()' function.
3. Clean up printks - make them more consistent and use the same
   code formatting style for them.
4. Remove silly style of putting brackets around everything in
   "if" operators.

Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Cc: Simon Kagstrom <simon.kagstrom@netinsight.net>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>

diff --git a/drivers/mtd/mtdoops.c b/drivers/mtd/mtdoops.c
index 1060337..c383add 100644 (file)
--- a/drivers/mtd/mtdoops.c
+++ b/drivers/mtd/mtdoops.c
@@ -81,9 +81,9 @@ static int mtdoops_erase_block(struct mtd_info *mtd, int offset)
        if (ret) {
                set_current_state(TASK_RUNNING);
                remove_wait_queue(&wait_q, &wait);
-               printk (KERN_WARNING "mtdoops: erase of region [0x%llx, 0x%llx] "
-                                    "on \"%s\" failed\n",
-                       (unsigned long long)erase.addr, (unsigned long long)erase.len, mtd->name);
+               printk(KERN_WARNING "mtdoops: erase of region [0x%llx, 0x%llx] on \"%s\" failed\n",
+                      (unsigned long long)erase.addr,
+                      (unsigned long long)erase.len, mtd->name);
                return ret;
        }
 
@@ -109,10 +109,9 @@ static void mtdoops_inc_counter(struct mtdoops_context *cxt)
 
        ret = mtd->read(mtd, cxt->nextpage * OOPS_PAGE_SIZE, 4,
                        &retlen, (u_char *) &count);
-       if ((retlen != 4) || ((ret < 0) && (ret != -EUCLEAN))) {
-               printk(KERN_ERR "mtdoops: Read failure at %d (%td of 4 read)"
-                               ", err %d.\n", cxt->nextpage * OOPS_PAGE_SIZE,
-                               retlen, ret);
+       if (retlen != 4 || (ret < 0 && ret != -EUCLEAN)) {
+               printk(KERN_ERR "mtdoops: read failure at %d (%td of 4 read), err %d\n",
+                      cxt->nextpage * OOPS_PAGE_SIZE, retlen, ret);
                schedule_work(&cxt->work_erase);
                return;
        }
@@ -123,8 +122,8 @@ static void mtdoops_inc_counter(struct mtdoops_context *cxt)
                return;
        }
 
-       printk(KERN_DEBUG "mtdoops: Ready %d, %d (no erase)\n",
-                       cxt->nextpage, cxt->nextcount);
+       printk(KERN_DEBUG "mtdoops: ready %d, %d (no erase)\n",
+              cxt->nextpage, cxt->nextcount);
        cxt->ready = 1;
 }
 
@@ -152,18 +151,18 @@ static void mtdoops_workfunc_erase(struct work_struct *work)
                if (!ret)
                        break;
                if (ret < 0) {
-                       printk(KERN_ERR "mtdoops: block_isbad failed, aborting.\n");
+                       printk(KERN_ERR "mtdoops: block_isbad failed, aborting\n");
                        return;
                }
 badblock:
-               printk(KERN_WARNING "mtdoops: Bad block at %08x\n",
-                               cxt->nextpage * OOPS_PAGE_SIZE);
+               printk(KERN_WARNING "mtdoops: bad block at %08x\n",
+                      cxt->nextpage * OOPS_PAGE_SIZE);
                i++;
                cxt->nextpage = cxt->nextpage + (mtd->erasesize / OOPS_PAGE_SIZE);
                if (cxt->nextpage >= cxt->oops_pages)
                        cxt->nextpage = 0;
-               if (i == (cxt->oops_pages / (mtd->erasesize / OOPS_PAGE_SIZE))) {
-                       printk(KERN_ERR "mtdoops: All blocks bad!\n");
+               if (i == cxt->oops_pages / (mtd->erasesize / OOPS_PAGE_SIZE)) {
+                       printk(KERN_ERR "mtdoops: all blocks bad!\n");
                        return;
                }
        }
@@ -172,15 +171,16 @@ badblock:
                ret = mtdoops_erase_block(mtd, cxt->nextpage * OOPS_PAGE_SIZE);
 
        if (ret >= 0) {
-               printk(KERN_DEBUG "mtdoops: Ready %d, %d \n", cxt->nextpage, cxt->nextcount);
+               printk(KERN_DEBUG "mtdoops: ready %d, %d\n",
+                      cxt->nextpage, cxt->nextcount);
                cxt->ready = 1;
                return;
        }
 
-       if (mtd->block_markbad && (ret == -EIO)) {
+       if (mtd->block_markbad && ret == -EIO) {
                ret = mtd->block_markbad(mtd, cxt->nextpage * OOPS_PAGE_SIZE);
                if (ret < 0) {
-                       printk(KERN_ERR "mtdoops: block_markbad failed, aborting.\n");
+                       printk(KERN_ERR "mtdoops: block_markbad failed, aborting\n");
                        return;
                }
        }
@@ -206,9 +206,9 @@ static void mtdoops_write(struct mtdoops_context *cxt, int panic)
 
        cxt->writecount = 0;
 
-       if ((retlen != OOPS_PAGE_SIZE) || (ret < 0))
-               printk(KERN_ERR "mtdoops: Write failure at %d (%td of %d written), err %d.\n",
-                       cxt->nextpage * OOPS_PAGE_SIZE, retlen, OOPS_PAGE_SIZE, ret);
+       if (retlen != OOPS_PAGE_SIZE || ret < 0)
+               printk(KERN_ERR "mtdoops: write failure at %d (%td of %d written), error %d\n",
+                      cxt->nextpage * OOPS_PAGE_SIZE, retlen, OOPS_PAGE_SIZE, ret);
 
        mtdoops_inc_counter(cxt);
 }
@@ -220,7 +220,7 @@ static void mtdoops_workfunc_write(struct work_struct *work)
                        container_of(work, struct mtdoops_context, work_write);
 
        mtdoops_write(cxt, 0);
-}                                      
+}
 
 static void find_next_position(struct mtdoops_context *cxt)
 {
@@ -231,9 +231,9 @@ static void find_next_position(struct mtdoops_context *cxt)
 
        for (page = 0; page < cxt->oops_pages; page++) {
                ret = mtd->read(mtd, page * OOPS_PAGE_SIZE, 8, &retlen, (u_char *) &count[0]);
-               if ((retlen != 8) || ((ret < 0) && (ret != -EUCLEAN))) {
-                       printk(KERN_ERR "mtdoops: Read failure at %d (%td of 8 read)"
-                               ", err %d.\n", page * OOPS_PAGE_SIZE, retlen, ret);
+               if (retlen != 8 || (ret < 0 && ret != -EUCLEAN)) {
+                       printk(KERN_ERR "mtdoops: read failure at %d (%td of 8 read), err %d\n",
+                              page * OOPS_PAGE_SIZE, retlen, ret);
                        continue;
                }
 
@@ -244,14 +244,14 @@ static void find_next_position(struct mtdoops_context *cxt)
                if (maxcount == 0xffffffff) {
                        maxcount = count[0];
                        maxpos = page;
-               } else if ((count[0] < 0x40000000) && (maxcount > 0xc0000000)) {
+               } else if (count[0] < 0x40000000 && maxcount > 0xc0000000) {
                        maxcount = count[0];
                        maxpos = page;
-               } else if ((count[0] > maxcount) && (count[0] < 0xc0000000)) {
+               } else if (count[0] > maxcount && count[0] < 0xc0000000) {
                        maxcount = count[0];
                        maxpos = page;
-               } else if ((count[0] > maxcount) && (count[0] > 0xc0000000)
-                                       && (maxcount > 0x80000000)) {
+               } else if (count[0] > maxcount && count[0] > 0xc0000000
+                                       && maxcount > 0x80000000) {
                        maxcount = count[0];
                        maxpos = page;
                }
@@ -277,18 +277,18 @@ static void mtdoops_notify_add(struct mtd_info *mtd)
        if (cxt->name && !strcmp(mtd->name, cxt->name))
                cxt->mtd_index = mtd->index;
 
-       if ((mtd->index != cxt->mtd_index) || cxt->mtd_index < 0)
+       if (mtd->index != cxt->mtd_index || cxt->mtd_index < 0)
                return;
 
-       if (mtd->size < (mtd->erasesize * 2)) {
-               printk(KERN_ERR "MTD partition %d not big enough for mtdoops\n",
-                               mtd->index);
+       if (mtd->size < mtd->erasesize * 2) {
+               printk(KERN_ERR "mtdoops: MTD partition %d not big enough for mtdoops\n",
+                      mtd->index);
                return;
        }
 
        if (mtd->erasesize < OOPS_PAGE_SIZE) {
-               printk(KERN_ERR "Eraseblock size of MTD partition %d too small\n",
-                               mtd->index);
+               printk(KERN_ERR "mtdoops: eraseblock size of MTD partition %d too small\n",
+                      mtd->index);
                return;
        }
 
@@ -307,7 +307,7 @@ static void mtdoops_notify_remove(struct mtd_info *mtd)
 {
        struct mtdoops_context *cxt = &oops_cxt;
 
-       if ((mtd->index != cxt->mtd_index) || cxt->mtd_index < 0)
+       if (mtd->index != cxt->mtd_index || cxt->mtd_index < 0)
                return;
 
        cxt->mtd = NULL;
@@ -323,8 +323,8 @@ static void mtdoops_console_sync(void)
        if (!cxt->ready || !mtd || cxt->writecount == 0)
                return;
 
-       /* 
-        *  Once ready is 0 and we've held the lock no further writes to the 
+       /*
+        *  Once ready is 0 and we've held the lock no further writes to the
         *  buffer will happen
         */
        spin_lock_irqsave(&cxt->writecount_lock, flags);
@@ -373,7 +373,7 @@ mtdoops_console_write(struct console *co, const char *s, unsigned int count)
                cxt->writecount = 8;
        }
 
-       if ((count + cxt->writecount) > OOPS_PAGE_SIZE)
+       if (count + cxt->writecount > OOPS_PAGE_SIZE)
                count = OOPS_PAGE_SIZE - cxt->writecount;
 
        memcpy(cxt->oops_buf + cxt->writecount, s, count);
@@ -422,13 +422,12 @@ static int __init mtdoops_console_init(void)
 
        cxt->mtd_index = -1;
        cxt->oops_buf = vmalloc(OOPS_PAGE_SIZE);
-       spin_lock_init(&cxt->writecount_lock);
-
        if (!cxt->oops_buf) {
-               printk(KERN_ERR "Failed to allocate mtdoops buffer workspace\n");
+               printk(KERN_ERR "mtdoops: failed to allocate buffer workspace\n");
                return -ENOMEM;
        }
 
+       spin_lock_init(&cxt->writecount_lock);
        INIT_WORK(&cxt->work_erase, mtdoops_workfunc_erase);
        INIT_WORK(&cxt->work_write, mtdoops_workfunc_write);