block: pass block dev not num to read/write/erase()

This will allow the implementation to make use of data in the block_dev
structure beyond the base device number. This will be useful so that eMMC
block devices can encompass the HW partition ID rather than treating this
out-of-band. Equally, the existence of the priv field is crying out for
this patch to exist.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Reviewed-by: Tom Rini <trini@konsulko.com>

6 files changed, 53 insertions, 46 deletions

diff --git a/fs/ext4/dev.c b/fs/ext4/dev.c
index 20f5256..9fd10de 100644
--- a/fs/ext4/dev.c
+++ b/fs/ext4/dev.c
@@ -76,10 +76,10 @@ int ext4fs_devread(lbaint_t sector, int byte_offset, int byte_len, char *buf)
 	if (byte_offset != 0) {
 		int readlen;
 		/* read first part which isn't aligned with start of sector */
-		if (ext4fs_block_dev_desc->
-		    block_read(ext4fs_block_dev_desc->dev,
-				part_info->start + sector, 1,
-				(unsigned long *) sec_buf) != 1) {
+		if (ext4fs_block_dev_desc->block_read(ext4fs_block_dev_desc,
+						      part_info->start + sector,
+						      1, (void *)sec_buf)
+		    != 1) {
 			printf(" ** ext2fs_devread() read error **\n");
 			return 0;
 		}
@@ -101,18 +101,18 @@ int ext4fs_devread(lbaint_t sector, int byte_offset, int byte_len, char *buf)
 		ALLOC_CACHE_ALIGN_BUFFER(u8, p, ext4fs_block_dev_desc->blksz);
 
 		block_len = ext4fs_block_dev_desc->blksz;
-		ext4fs_block_dev_desc->block_read(ext4fs_block_dev_desc->dev,
+		ext4fs_block_dev_desc->block_read(ext4fs_block_dev_desc,
 						  part_info->start + sector,
-						  1, (unsigned long *)p);
+						  1, (void *)p);
 		memcpy(buf, p, byte_len);
 		return 1;
 	}
 
-	if (ext4fs_block_dev_desc->block_read(ext4fs_block_dev_desc->dev,
-					       part_info->start + sector,
-					       block_len >> log2blksz,
-					       (unsigned long *) buf) !=
-					       block_len >> log2blksz) {
+	if (ext4fs_block_dev_desc->block_read(ext4fs_block_dev_desc,
+					      part_info->start + sector,
+					      block_len >> log2blksz,
+					      (void *)buf) !=
+					      block_len >> log2blksz) {
 		printf(" ** %s read error - block\n", __func__);
 		return 0;
 	}
@@ -123,10 +123,10 @@ int ext4fs_devread(lbaint_t sector, int byte_offset, int byte_len, char *buf)
 
 	if (byte_len != 0) {
 		/* read rest of data which are not in whole sector */
-		if (ext4fs_block_dev_desc->
-		    block_read(ext4fs_block_dev_desc->dev,
-				part_info->start + sector, 1,
-				(unsigned long *) sec_buf) != 1) {
+		if (ext4fs_block_dev_desc->block_read(ext4fs_block_dev_desc,
+						      part_info->start + sector,
+						      1, (void *)sec_buf)
+		    != 1) {
 			printf("* %s read error - last part\n", __func__);
 			return 0;
 		}
diff --git a/fs/ext4/ext4_common.c b/fs/ext4/ext4_common.c
index e73223a..55efa4d 100644
--- a/fs/ext4/ext4_common.c
+++ b/fs/ext4/ext4_common.c
@@ -82,26 +82,26 @@ void put_ext4(uint64_t off, void *buf, uint32_t size)
 
 	if (remainder) {
 		if (fs->dev_desc->block_read) {
-			fs->dev_desc->block_read(fs->dev_desc->dev,
+			fs->dev_desc->block_read(fs->dev_desc,
 						 startblock, 1, sec_buf);
 			temp_ptr = sec_buf;
 			memcpy((temp_ptr + remainder),
 			       (unsigned char *)buf, size);
-			fs->dev_desc->block_write(fs->dev_desc->dev,
+			fs->dev_desc->block_write(fs->dev_desc,
 						  startblock, 1, sec_buf);
 		}
 	} else {
 		if (size >> log2blksz != 0) {
-			fs->dev_desc->block_write(fs->dev_desc->dev,
+			fs->dev_desc->block_write(fs->dev_desc,
 						  startblock,
 						  size >> log2blksz,
 						  (unsigned long *)buf);
 		} else {
-			fs->dev_desc->block_read(fs->dev_desc->dev,
+			fs->dev_desc->block_read(fs->dev_desc,
 						 startblock, 1, sec_buf);
 			temp_ptr = sec_buf;
 			memcpy(temp_ptr, buf, size);
-			fs->dev_desc->block_write(fs->dev_desc->dev,
+			fs->dev_desc->block_write(fs->dev_desc,
 						  startblock, 1,
 						  (unsigned long *)sec_buf);
 		}
diff --git a/fs/fat/fat.c b/fs/fat/fat.c
index f939bc5..472a63e 100644
--- a/fs/fat/fat.c
+++ b/fs/fat/fat.c
@@ -51,8 +51,8 @@ static int disk_read(__u32 block, __u32 nr_blocks, void *buf)
 	if (!cur_dev || !cur_dev->block_read)
 		return -1;
 
-	ret = cur_dev->block_read(cur_dev->dev,
-				  cur_part_info.start + block, nr_blocks, buf);
+	ret = cur_dev->block_read(cur_dev, cur_part_info.start + block,
+				  nr_blocks, buf);
 
 	if (nr_blocks && ret == 0)
 		return -1;
diff --git a/fs/fat/fat_write.c b/fs/fat/fat_write.c
index af828d0..5ed324c 100644
--- a/fs/fat/fat_write.c
+++ b/fs/fat/fat_write.c
@@ -41,8 +41,7 @@ static int disk_write(__u32 block, __u32 nr_blocks, void *buf)
 		return -1;
 	}
 
-	ret = cur_dev->block_write(cur_dev->dev,
-				   cur_part_info.start + block,
+	ret = cur_dev->block_write(cur_dev, cur_part_info.start + block,
 				   nr_blocks, buf);
 	if (nr_blocks && ret == 0)
 		return -1;
diff --git a/fs/reiserfs/dev.c b/fs/reiserfs/dev.c
index 6825545..7b24d6a 100644
--- a/fs/reiserfs/dev.c
+++ b/fs/reiserfs/dev.c
@@ -59,9 +59,11 @@ int reiserfs_devread (int sector, int byte_offset, int byte_len, char *buf)
 
 	if (byte_offset != 0) {
 		/* read first part which isn't aligned with start of sector */
-		if (reiserfs_block_dev_desc->block_read(reiserfs_block_dev_desc->dev,
-		    part_info->start + sector, 1,
-		    (unsigned long *)sec_buf) != 1) {
+		if (reiserfs_block_dev_desc->block_read(reiserfs_block_dev_desc,
+							part_info->start +
+								sector,
+							1, (void *)sec_buf)
+		    != 1) {
 			printf (" ** reiserfs_devread() read error\n");
 			return 0;
 		}
@@ -73,9 +75,11 @@ int reiserfs_devread (int sector, int byte_offset, int byte_len, char *buf)
 
 	/* read sector aligned part */
 	block_len = byte_len & ~(SECTOR_SIZE-1);
-	if (reiserfs_block_dev_desc->block_read(reiserfs_block_dev_desc->dev,
-	    part_info->start + sector, block_len/SECTOR_SIZE,
-	    (unsigned long *)buf) != block_len/SECTOR_SIZE) {
+	if (reiserfs_block_dev_desc->block_read(reiserfs_block_dev_desc,
+						part_info->start + sector,
+						block_len / SECTOR_SIZE,
+						(void *)buf)
+	    != block_len/SECTOR_SIZE) {
 		printf (" ** reiserfs_devread() read error - block\n");
 		return 0;
 	}
@@ -85,9 +89,11 @@ int reiserfs_devread (int sector, int byte_offset, int byte_len, char *buf)
 
 	if ( byte_len != 0 ) {
 		/* read rest of data which are not in whole sector */
-		if (reiserfs_block_dev_desc->block_read(reiserfs_block_dev_desc->dev,
-		    part_info->start + sector, 1,
-		    (unsigned long *)sec_buf) != 1) {
+		if (reiserfs_block_dev_desc->block_read(reiserfs_block_dev_desc,
+							part_info->start +
+							    sector,
+							1, (void *)sec_buf)
+		    != 1) {
 			printf (" ** reiserfs_devread() read error - last part\n");
 			return 0;
 		}
diff --git a/fs/zfs/dev.c b/fs/zfs/dev.c
index 3a1fa56..67d1265 100644
--- a/fs/zfs/dev.c
+++ b/fs/zfs/dev.c
@@ -55,9 +55,10 @@ int zfs_devread(int sector, int byte_offset, int byte_len, char *buf)
 
 	if (byte_offset != 0) {
 		/* read first part which isn't aligned with start of sector */
-		if (zfs_block_dev_desc->block_read(zfs_block_dev_desc->dev,
-			part_info->start + sector, 1,
-			(unsigned long *)sec_buf) != 1) {
+		if (zfs_block_dev_desc->block_read(zfs_block_dev_desc,
+						   part_info->start + sector, 1,
+						   (void *)sec_buf)
+		    != 1) {
 			printf(" ** zfs_devread() read error **\n");
 			return 1;
 		}
@@ -78,16 +79,18 @@ int zfs_devread(int sector, int byte_offset, int byte_len, char *buf)
 		u8 p[SECTOR_SIZE];
 
 		block_len = SECTOR_SIZE;
-		zfs_block_dev_desc->block_read(zfs_block_dev_desc->dev,
-			part_info->start + sector,
-			1, (unsigned long *)p);
+		zfs_block_dev_desc->block_read(zfs_block_dev_desc,
+					       part_info->start + sector,
+					       1, (void *)p);
 		memcpy(buf, p, byte_len);
 		return 0;
 	}
 
-	if (zfs_block_dev_desc->block_read(zfs_block_dev_desc->dev,
-		part_info->start + sector, block_len / SECTOR_SIZE,
-		(unsigned long *) buf) != block_len / SECTOR_SIZE) {
+	if (zfs_block_dev_desc->block_read(zfs_block_dev_desc,
+					   part_info->start + sector,
+					   block_len / SECTOR_SIZE,
+					   (void *)buf)
+	    != block_len / SECTOR_SIZE) {
 		printf(" ** zfs_devread() read error - block\n");
 		return 1;
 	}
@@ -99,10 +102,9 @@ int zfs_devread(int sector, int byte_offset, int byte_len, char *buf)
 
 	if (byte_len != 0) {
 		/* read rest of data which are not in whole sector */
-		if (zfs_block_dev_desc->
-			block_read(zfs_block_dev_desc->dev,
-					   part_info->start + sector, 1,
-					   (unsigned long *) sec_buf) != 1) {
+		if (zfs_block_dev_desc->block_read(zfs_block_dev_desc,
+						   part_info->start + sector,
+						   1, (void *)sec_buf) != 1) {
 			printf(" ** zfs_devread() read error - last part\n");
 			return 1;
 		}