mtd: fix almost all checkpatch warnings in nand_base.c

Only 3 warnings are left, one is off by one character, but splitting the line
would reduce the readability. One is for a for loop statement, which would also
not improve readability. The last one is a false positive on a test.

Artem: it is much easier to verify patches against nand_base.c with
       checkpatch.pl when nand_base.c itself does not have so many
       checkpatch.pl warnings.

Signed-off-by: Florian Fainelli <ffainelli@freebox.fr>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>

diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c
index 50c0d5f1c80aed449a928dba25ce6d668745d3a2..922b890c8fcb28ebcb25293a266bea10da2beacc 100644 (file)
--- a/drivers/mtd/nand/nand_base.c
+++ b/drivers/mtd/nand/nand_base.c
@@ -45,7 +45,7 @@
 #include <linux/interrupt.h>
 #include <linux/bitops.h>
 #include <linux/leds.h>
-#include <asm/io.h>
+#include <linux/io.h>
 
 #ifdef CONFIG_MTD_PARTITIONS
 #include <linux/mtd/partitions.h>
@@ -786,7 +786,7 @@ nand_get_device(struct nand_chip *chip, struct mtd_info *mtd, int new_state)
        spinlock_t *lock = &chip->controller->lock;
        wait_queue_head_t *wq = &chip->controller->wq;
        DECLARE_WAITQUEUE(wait, current);
- retry:
+retry:
        spin_lock(lock);
 
        /* Hardware controller shared among independent devices */
@@ -982,6 +982,7 @@ out:
 
        return ret;
 }
+EXPORT_SYMBOL(nand_unlock);
 
 /**
  * nand_lock - [REPLACEABLE] locks all blocks present in the device
@@ -1051,6 +1052,7 @@ out:
 
        return ret;
 }
+EXPORT_SYMBOL(nand_lock);
 
 /**
  * nand_read_page_raw - [Intern] read raw page data without ecc
@@ -1078,8 +1080,9 @@ static int nand_read_page_raw(struct mtd_info *mtd, struct nand_chip *chip,
  *
  * We need a special oob layout and handling even when OOB isn't used.
  */
-static int nand_read_page_raw_syndrome(struct mtd_info *mtd, struct nand_chip *chip,
-                             uint8_t *buf, int page)
+static int nand_read_page_raw_syndrome(struct mtd_info *mtd,
+                                       struct nand_chip *chip,
+                                       uint8_t *buf, int page)
 {
        int eccsize = chip->ecc.size;
        int eccbytes = chip->ecc.bytes;
@@ -1160,7 +1163,8 @@ static int nand_read_page_swecc(struct mtd_info *mtd, struct nand_chip *chip,
  * @readlen:   data length
  * @bufpoi:    buffer to store read data
  */
-static int nand_read_subpage(struct mtd_info *mtd, struct nand_chip *chip, uint32_t data_offs, uint32_t readlen, uint8_t *bufpoi)
+static int nand_read_subpage(struct mtd_info *mtd, struct nand_chip *chip,
+                       uint32_t data_offs, uint32_t readlen, uint8_t *bufpoi)
 {
        int start_step, end_step, num_steps;
        uint32_t *eccpos = chip->ecc.layout->eccpos;
@@ -1168,6 +1172,7 @@ static int nand_read_subpage(struct mtd_info *mtd, struct nand_chip *chip, uint3
        int data_col_addr, i, gaps = 0;
        int datafrag_len, eccfrag_len, aligned_len, aligned_pos;
        int busw = (chip->options & NAND_BUSWIDTH_16) ? 2 : 1;
+       int index = 0;
 
        /* Column address wihin the page aligned to ECC size (256bytes). */
        start_step = data_offs / chip->ecc.size;
@@ -1206,25 +1211,29 @@ static int nand_read_subpage(struct mtd_info *mtd, struct nand_chip *chip, uint3
        } else {
                /* send the command to read the particular ecc bytes */
                /* take care about buswidth alignment in read_buf */
-               aligned_pos = eccpos[start_step * chip->ecc.bytes] & ~(busw - 1);
+               index = start_step * chip->ecc.bytes;
+
+               aligned_pos = eccpos[index] & ~(busw - 1);
                aligned_len = eccfrag_len;
-               if (eccpos[start_step * chip->ecc.bytes] & (busw - 1))
+               if (eccpos[index] & (busw - 1))
                        aligned_len++;
-               if (eccpos[(start_step + num_steps) * chip->ecc.bytes] & (busw - 1))
+               if (eccpos[index + (num_steps * chip->ecc.bytes)] & (busw - 1))
                        aligned_len++;
 
-               chip->cmdfunc(mtd, NAND_CMD_RNDOUT, mtd->writesize + aligned_pos, -1);
+               chip->cmdfunc(mtd, NAND_CMD_RNDOUT,
+                                       mtd->writesize + aligned_pos, -1);
                chip->read_buf(mtd, &chip->oob_poi[aligned_pos], aligned_len);
        }
 
        for (i = 0; i < eccfrag_len; i++)
-               chip->buffers->ecccode[i] = chip->oob_poi[eccpos[i + start_step * chip->ecc.bytes]];
+               chip->buffers->ecccode[i] = chip->oob_poi[eccpos[i + index]];
 
        p = bufpoi + data_col_addr;
        for (i = 0; i < eccfrag_len ; i += chip->ecc.bytes, p += chip->ecc.size) {
                int stat;
 
-               stat = chip->ecc.correct(mtd, p, &chip->buffers->ecccode[i], &chip->buffers->ecccalc[i]);
+               stat = chip->ecc.correct(mtd, p,
+                       &chip->buffers->ecccode[i], &chip->buffers->ecccalc[i]);
                if (stat < 0)
                        mtd->ecc_stats.failed++;
                else
@@ -1486,7 +1495,8 @@ static int nand_do_read_ops(struct mtd_info *mtd, loff_t from,
                                ret = chip->ecc.read_page_raw(mtd, chip,
                                                              bufpoi, page);
                        else if (!aligned && NAND_SUBPAGE_READ(chip) && !oob)
-                               ret = chip->ecc.read_subpage(mtd, chip, col, bytes, bufpoi);
+                               ret = chip->ecc.read_subpage(mtd, chip,
+                                                       col, bytes, bufpoi);
                        else
                                ret = chip->ecc.read_page(mtd, chip, bufpoi,
                                                          page);
@@ -1878,7 +1888,7 @@ static int nand_read_oob(struct mtd_info *mtd, loff_t from,
        else
                ret = nand_do_read_ops(mtd, from, ops);
 
- out:
+out:
        nand_release_device(mtd);
        return ret;
 }
@@ -1907,8 +1917,9 @@ static void nand_write_page_raw(struct mtd_info *mtd, struct nand_chip *chip,
  *
  * We need a special oob layout and handling even when ECC isn't checked.
  */
-static void nand_write_page_raw_syndrome(struct mtd_info *mtd, struct nand_chip *chip,
-                               const uint8_t *buf)
+static void nand_write_page_raw_syndrome(struct mtd_info *mtd,
+                                       struct nand_chip *chip,
+                                       const uint8_t *buf)
 {
        int eccsize = chip->ecc.size;
        int eccbytes = chip->ecc.bytes;
@@ -2448,7 +2459,7 @@ static int nand_write_oob(struct mtd_info *mtd, loff_t to,
        else
                ret = nand_do_write_ops(mtd, to, ops);
 
- out:
+out:
        nand_release_device(mtd);
        return ret;
 }
@@ -2634,7 +2645,7 @@ int nand_erase_nand(struct mtd_info *mtd, struct erase_info *instr,
        }
        instr->state = MTD_ERASE_DONE;
 
- erase_exit:
+erase_exit:
 
        ret = instr->state == MTD_ERASE_DONE ? 0 : -EIO;
 
@@ -2892,7 +2903,8 @@ static int nand_flash_detect_onfi(struct mtd_info *mtd, struct nand_chip *chip,
  */
 static struct nand_flash_dev *nand_get_flash_type(struct mtd_info *mtd,
                                                  struct nand_chip *chip,
-                                                 int busw, int *maf_id, int *dev_id,
+                                                 int busw,
+                                                 int *maf_id, int *dev_id,
                                                  struct nand_flash_dev *type)
 {
        int i, maf_idx;
@@ -3087,8 +3099,10 @@ ident_done:
                ffs(mtd->erasesize) - 1;
        if (chip->chipsize & 0xffffffff)
                chip->chip_shift = ffs((unsigned)chip->chipsize) - 1;
-       else
-               chip->chip_shift = ffs((unsigned)(chip->chipsize >> 32)) + 32 - 1;
+       else {
+               chip->chip_shift = ffs((unsigned)(chip->chipsize >> 32));
+               chip->chip_shift += 32 - 1;
+       }
 
        /* Set the bad block position */
        if (mtd->writesize > 512 || (busw & NAND_BUSWIDTH_16))
@@ -3169,7 +3183,8 @@ int nand_scan_ident(struct mtd_info *mtd, int maxchips,
        nand_set_defaults(chip, busw);
 
        /* Read the flash type */
-       type = nand_get_flash_type(mtd, chip, busw, &nand_maf_id, &nand_dev_id, table);
+       type = nand_get_flash_type(mtd, chip, busw,
+                               &nand_maf_id, &nand_dev_id, table);
 
        if (IS_ERR(type)) {
                if (!(chip->options & NAND_SCAN_SILENT_NODEV))
@@ -3199,6 +3214,7 @@ int nand_scan_ident(struct mtd_info *mtd, int maxchips,
 
        return 0;
 }
+EXPORT_SYMBOL(nand_scan_ident);
 
 
 /**
@@ -3427,10 +3443,11 @@ int nand_scan_tail(struct mtd_info *mtd)
        /* Build bad block table */
        return chip->scan_bbt(mtd);
 }
+EXPORT_SYMBOL(nand_scan_tail);
 
 /* is_module_text_address() isn't exported, and it's mostly a pointless
-   test if this is a module _anyway_ -- they'd have to try _really_ hard
-   to call us from in-kernel code if the core NAND support is modular. */
+ * test if this is a module _anyway_ -- they'd have to try _really_ hard
+ * to call us from in-kernel code if the core NAND support is modular. */
 #ifdef MODULE
 #define caller_is_module() (1)
 #else
@@ -3466,6 +3483,7 @@ int nand_scan(struct mtd_info *mtd, int maxchips)
                ret = nand_scan_tail(mtd);
        return ret;
 }
+EXPORT_SYMBOL(nand_scan);
 
 /**
  * nand_release - [NAND Interface] Free resources held by the NAND device
@@ -3492,12 +3510,6 @@ void nand_release(struct mtd_info *mtd)
                        & NAND_BBT_DYNAMICSTRUCT)
                kfree(chip->badblock_pattern);
 }
-
-EXPORT_SYMBOL_GPL(nand_lock);
-EXPORT_SYMBOL_GPL(nand_unlock);
-EXPORT_SYMBOL_GPL(nand_scan);
-EXPORT_SYMBOL_GPL(nand_scan_ident);
-EXPORT_SYMBOL_GPL(nand_scan_tail);
 EXPORT_SYMBOL_GPL(nand_release);
 
 static int __init nand_base_init(void)
@@ -3515,5 +3527,6 @@ module_init(nand_base_init);
 module_exit(nand_base_exit);
 
 MODULE_LICENSE("GPL");
-MODULE_AUTHOR("Steven J. Hill <sjhill@realitydiluted.com>, Thomas Gleixner <tglx@linutronix.de>");
+MODULE_AUTHOR("Steven J. Hill <sjhill@realitydiluted.com>");
+MODULE_AUTHOR("Thomas Gleixner <tglx@linutronix.de>");
 MODULE_DESCRIPTION("Generic NAND flash driver code");