mtd: introduce mtd_read interface

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/mtd_pagetest.c b/drivers/mtd/tests/mtd_pagetest.c
index 271819f..6d62e24 100644
--- a/drivers/mtd/tests/mtd_pagetest.c
+++ b/drivers/mtd/tests/mtd_pagetest.c
@@ -127,7 +127,7 @@
 	set_random_data(writebuf, mtd->erasesize);
 	for (j = 0; j < pgcnt - 1; ++j, addr += pgsize) {
 		/* Do a read to set the internal dataRAMs to different data */
-		err = mtd->read(mtd, addr0, bufsize, &read, twopages);
+		err = mtd_read(mtd, addr0, bufsize, &read, twopages);
 		if (mtd_is_bitflip(err))
 			err = 0;
 		if (err || read != bufsize) {
@@ -135,7 +135,7 @@
 			       (long long)addr0);
 			return err;
 		}
-		err = mtd->read(mtd, addrn - bufsize, bufsize, &read, twopages);
+		err = mtd_read(mtd, addrn - bufsize, bufsize, &read, twopages);
 		if (mtd_is_bitflip(err))
 			err = 0;
 		if (err || read != bufsize) {
@@ -145,7 +145,7 @@
 		}
 		memset(twopages, 0, bufsize);
 		read = 0;
-		err = mtd->read(mtd, addr, bufsize, &read, twopages);
+		err = mtd_read(mtd, addr, bufsize, &read, twopages);
 		if (mtd_is_bitflip(err))
 			err = 0;
 		if (err || read != bufsize) {
@@ -163,7 +163,7 @@
 	if (addr <= addrn - pgsize - pgsize && !bbt[ebnum + 1]) {
 		unsigned long oldnext = next;
 		/* Do a read to set the internal dataRAMs to different data */
-		err = mtd->read(mtd, addr0, bufsize, &read, twopages);
+		err = mtd_read(mtd, addr0, bufsize, &read, twopages);
 		if (mtd_is_bitflip(err))
 			err = 0;
 		if (err || read != bufsize) {
@@ -171,7 +171,7 @@
 			       (long long)addr0);
 			return err;
 		}
-		err = mtd->read(mtd, addrn - bufsize, bufsize, &read, twopages);
+		err = mtd_read(mtd, addrn - bufsize, bufsize, &read, twopages);
 		if (mtd_is_bitflip(err))
 			err = 0;
 		if (err || read != bufsize) {
@@ -181,7 +181,7 @@
 		}
 		memset(twopages, 0, bufsize);
 		read = 0;
-		err = mtd->read(mtd, addr, bufsize, &read, twopages);
+		err = mtd_read(mtd, addr, bufsize, &read, twopages);
 		if (mtd_is_bitflip(err))
 			err = 0;
 		if (err || read != bufsize) {
@@ -230,7 +230,7 @@
 	/* Read 2nd-to-last page to pp1 */
 	read = 0;
 	addr = addrn - pgsize - pgsize;
-	err = mtd->read(mtd, addr, pgsize, &read, pp1);
+	err = mtd_read(mtd, addr, pgsize, &read, pp1);
 	if (mtd_is_bitflip(err))
 		err = 0;
 	if (err || read != pgsize) {
@@ -243,7 +243,7 @@
 	/* Read 3rd-to-last page to pp1 */
 	read = 0;
 	addr = addrn - pgsize - pgsize - pgsize;
-	err = mtd->read(mtd, addr, pgsize, &read, pp1);
+	err = mtd_read(mtd, addr, pgsize, &read, pp1);
 	if (mtd_is_bitflip(err))
 		err = 0;
 	if (err || read != pgsize) {
@@ -257,7 +257,7 @@
 	read = 0;
 	addr = addr0;
 	printk(PRINT_PREF "reading page at %#llx\n", (long long)addr);
-	err = mtd->read(mtd, addr, pgsize, &read, pp2);
+	err = mtd_read(mtd, addr, pgsize, &read, pp2);
 	if (mtd_is_bitflip(err))
 		err = 0;
 	if (err || read != pgsize) {
@@ -271,7 +271,7 @@
 	read = 0;
 	addr = addrn - pgsize;
 	printk(PRINT_PREF "reading page at %#llx\n", (long long)addr);
-	err = mtd->read(mtd, addr, pgsize, &read, pp3);
+	err = mtd_read(mtd, addr, pgsize, &read, pp3);
 	if (mtd_is_bitflip(err))
 		err = 0;
 	if (err || read != pgsize) {
@@ -285,7 +285,7 @@
 	read = 0;
 	addr = addr0;
 	printk(PRINT_PREF "reading page at %#llx\n", (long long)addr);
-	err = mtd->read(mtd, addr, pgsize, &read, pp4);
+	err = mtd_read(mtd, addr, pgsize, &read, pp4);
 	if (mtd_is_bitflip(err))
 		err = 0;
 	if (err || read != pgsize) {
@@ -344,7 +344,7 @@
 
 	printk(PRINT_PREF "reading 1st page of block %d\n", ebnum);
 	memset(readbuf, 0, pgsize);
-	err = mtd->read(mtd, addr0, pgsize, &read, readbuf);
+	err = mtd_read(mtd, addr0, pgsize, &read, readbuf);
 	if (mtd_is_bitflip(err))
 		err = 0;
 	if (err || read != pgsize) {
@@ -382,7 +382,7 @@
 
 	printk(PRINT_PREF "reading 1st page of block %d\n", ebnum);
 	memset(readbuf, 0, pgsize);
-	err = mtd->read(mtd, addr0, pgsize, &read, readbuf);
+	err = mtd_read(mtd, addr0, pgsize, &read, readbuf);
 	if (mtd_is_bitflip(err))
 		err = 0;
 	if (err || read != pgsize) {
@@ -438,7 +438,7 @@
 		return err;
 
 	printk(PRINT_PREF "reading 1st page of block %d\n", ebnum);
-	err = mtd->read(mtd, addr0, pgsize, &read, twopages);
+	err = mtd_read(mtd, addr0, pgsize, &read, twopages);
 	if (mtd_is_bitflip(err))
 		err = 0;
 	if (err || read != pgsize) {