mtd: mtd_stresstest: use mtd_test helpers

Use mtdtest_read(), mtdtest_write(), mtdtest_erase_eraseblock(), and
mtdtest_scan_for_bad_eraseblocks() in mtd_test helpers.

Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Cc: Brian Norris <computersforpeace@gmail.com>
Cc: Vikram Narayanan <vikram186@gmail.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>

diff --git a/drivers/mtd/tests/stresstest.c b/drivers/mtd/tests/stresstest.c
index 3a95e61..1695248 100644 (file)
--- a/drivers/mtd/tests/stresstest.c
+++ b/drivers/mtd/tests/stresstest.c
@@ -31,6 +31,8 @@
 #include <linux/vmalloc.h>
 #include <linux/random.h>
 
+#include "mtd_test.h"
+
 static int dev = -EINVAL;
 module_param(dev, int, S_IRUGO);
 MODULE_PARM_DESC(dev, "MTD device number to use");
@@ -81,46 +83,8 @@ static int rand_len(int offs)
        return len;
 }
 
-static int erase_eraseblock(int ebnum)
-{
-       int err;
-       struct erase_info ei;
-       loff_t addr = ebnum * mtd->erasesize;
-
-       memset(&ei, 0, sizeof(struct erase_info));
-       ei.mtd  = mtd;
-       ei.addr = addr;
-       ei.len  = mtd->erasesize;
-
-       err = mtd_erase(mtd, &ei);
-       if (unlikely(err)) {
-               pr_err("error %d while erasing EB %d\n", err, ebnum);
-               return err;
-       }
-
-       if (unlikely(ei.state == MTD_ERASE_FAILED)) {
-               pr_err("some erase error occurred at EB %d\n",
-                      ebnum);
-               return -EIO;
-       }
-
-       return 0;
-}
-
-static int is_block_bad(int ebnum)
-{
-       loff_t addr = ebnum * mtd->erasesize;
-       int ret;
-
-       ret = mtd_block_isbad(mtd, addr);
-       if (ret)
-               pr_info("block %d is bad\n", ebnum);
-       return ret;
-}
-
 static int do_read(void)
 {
-       size_t read;
        int eb = rand_eb();
        int offs = rand_offs();
        int len = rand_len(offs), err;
@@ -133,14 +97,10 @@ static int do_read(void)
                        len = mtd->erasesize - offs;
        }
        addr = eb * mtd->erasesize + offs;
-       err = mtd_read(mtd, addr, len, &read, readbuf);
-       if (mtd_is_bitflip(err))
-               err = 0;
-       if (unlikely(err || read != len)) {
+       err = mtdtest_read(mtd, addr, len, readbuf);
+       if (unlikely(err)) {
                pr_err("error: read failed at 0x%llx\n",
                       (long long)addr);
-               if (!err)
-                       err = -EINVAL;
                return err;
        }
        return 0;
@@ -149,12 +109,11 @@ static int do_read(void)
 static int do_write(void)
 {
        int eb = rand_eb(), offs, err, len;
-       size_t written;
        loff_t addr;
 
        offs = offsets[eb];
        if (offs >= mtd->erasesize) {
-               err = erase_eraseblock(eb);
+               err = mtdtest_erase_eraseblock(mtd, eb);
                if (err)
                        return err;
                offs = offsets[eb] = 0;
@@ -165,19 +124,17 @@ static int do_write(void)
                if (bbt[eb + 1])
                        len = mtd->erasesize - offs;
                else {
-                       err = erase_eraseblock(eb + 1);
+                       err = mtdtest_erase_eraseblock(mtd, eb + 1);
                        if (err)
                                return err;
                        offsets[eb + 1] = 0;
                }
        }
        addr = eb * mtd->erasesize + offs;
-       err = mtd_write(mtd, addr, len, &written, writebuf);
-       if (unlikely(err || written != len)) {
+       err = mtdtest_write(mtd, addr, len, writebuf);
+       if (unlikely(err)) {
                pr_err("error: write failed at 0x%llx\n",
                       (long long)addr);
-               if (!err)
-                       err = -EINVAL;
                return err;
        }
        offs += len;
@@ -197,28 +154,6 @@ static int do_operation(void)
                return do_write();
 }
 
-static int scan_for_bad_eraseblocks(void)
-{
-       int i, bad = 0;
-
-       bbt = kzalloc(ebcnt, GFP_KERNEL);
-       if (!bbt)
-               return -ENOMEM;
-
-       if (!mtd_can_have_bb(mtd))
-               return 0;
-
-       pr_info("scanning for bad eraseblocks\n");
-       for (i = 0; i < ebcnt; ++i) {
-               bbt[i] = is_block_bad(i) ? 1 : 0;
-               if (bbt[i])
-                       bad += 1;
-               cond_resched();
-       }
-       pr_info("scanned %d eraseblocks, %d are bad\n", i, bad);
-       return 0;
-}
-
 static int __init mtd_stresstest_init(void)
 {
        int err;
@@ -280,7 +215,10 @@ static int __init mtd_stresstest_init(void)
                offsets[i] = mtd->erasesize;
        prandom_bytes(writebuf, bufsize);
 
-       err = scan_for_bad_eraseblocks();
+       bbt = kzalloc(ebcnt, GFP_KERNEL);
+       if (!bbt)
+               goto out;
+       err = mtdtest_scan_for_bad_eraseblocks(mtd, bbt, 0, ebcnt);
        if (err)
                goto out;