block: Change blk_{pread,pwrite}() param order

Swap 'buf' and 'bytes' around for consistency with
blk_co_{pread,pwrite}(), and in preparation to implement these functions
using generated_co_wrapper.

Callers were updated using this Coccinelle script:

    @@ expression blk, offset, buf, bytes, flags; @@
    - blk_pread(blk, offset, buf, bytes, flags)
    + blk_pread(blk, offset, bytes, buf, flags)

    @@ expression blk, offset, buf, bytes, flags; @@
    - blk_pwrite(blk, offset, buf, bytes, flags)
    + blk_pwrite(blk, offset, bytes, buf, flags)

It had no effect on hw/block/nand.c, presumably due to the #if, so that
file was updated manually.

Overly-long lines were then fixed by hand.

Signed-off-by: Alberto Faria <afaria@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Hanna Reitz <hreitz@redhat.com>
Message-Id: <20220705161527.1054072-4-afaria@redhat.com>
Signed-off-by: Hanna Reitz <hreitz@redhat.com>

19 files changed, 84 insertions, 83 deletions

diff --git a/hw/arm/allwinner-h3.c b/hw/arm/allwinner-h3.c
index 788083b..308ed15 100644
--- a/hw/arm/allwinner-h3.c
+++ b/hw/arm/allwinner-h3.c
@@ -174,7 +174,7 @@ void allwinner_h3_bootrom_setup(AwH3State *s, BlockBackend *blk)
     const int64_t rom_size = 32 * KiB;
     g_autofree uint8_t *buffer = g_new0(uint8_t, rom_size);
 
-    if (blk_pread(blk, 8 * KiB, buffer, rom_size, 0) < 0) {
+    if (blk_pread(blk, 8 * KiB, rom_size, buffer, 0) < 0) {
         error_setg(&error_fatal, "%s: failed to read BlockBackend data",
                    __func__);
         return;
diff --git a/hw/arm/aspeed.c b/hw/arm/aspeed.c
index 3a2f101..3340187 100644
--- a/hw/arm/aspeed.c
+++ b/hw/arm/aspeed.c
@@ -253,7 +253,7 @@ static void write_boot_rom(DriveInfo *dinfo, hwaddr addr, size_t rom_size,
     }
 
     storage = g_malloc0(rom_size);
-    if (blk_pread(blk, 0, storage, rom_size, 0) < 0) {
+    if (blk_pread(blk, 0, rom_size, storage, 0) < 0) {
         error_setg(errp, "failed to read the initial flash content");
         return;
     }
diff --git a/hw/block/block.c b/hw/block/block.c
index effb899..0427916 100644
--- a/hw/block/block.c
+++ b/hw/block/block.c
@@ -53,7 +53,7 @@ bool blk_check_size_and_read_all(BlockBackend *blk, void *buf, hwaddr size,
      * block device and read only on demand.
      */
     assert(size <= BDRV_REQUEST_MAX_BYTES);
-    ret = blk_pread(blk, 0, buf, size, 0);
+    ret = blk_pread(blk, 0, size, buf, 0);
     if (ret < 0) {
         error_setg_errno(errp, -ret, "can't read block backend");
         return false;
diff --git a/hw/block/fdc.c b/hw/block/fdc.c
index 52f278e..64ae4a6 100644
--- a/hw/block/fdc.c
+++ b/hw/block/fdc.c
@@ -1628,8 +1628,8 @@ int fdctrl_transfer_handler(void *opaque, int nchan, int dma_pos, int dma_len)
         if (fdctrl->data_dir != FD_DIR_WRITE ||
             len < FD_SECTOR_LEN || rel_pos != 0) {
             /* READ & SCAN commands and realign to a sector for WRITE */
-            if (blk_pread(cur_drv->blk, fd_offset(cur_drv), fdctrl->fifo,
-                          BDRV_SECTOR_SIZE, 0) < 0) {
+            if (blk_pread(cur_drv->blk, fd_offset(cur_drv), BDRV_SECTOR_SIZE,
+                          fdctrl->fifo, 0) < 0) {
                 FLOPPY_DPRINTF("Floppy: error getting sector %d\n",
                                fd_sector(cur_drv));
                 /* Sure, image size is too small... */
@@ -1656,8 +1656,8 @@ int fdctrl_transfer_handler(void *opaque, int nchan, int dma_pos, int dma_len)
 
             k->read_memory(fdctrl->dma, nchan, fdctrl->fifo + rel_pos,
                            fdctrl->data_pos, len);
-            if (blk_pwrite(cur_drv->blk, fd_offset(cur_drv),
-                           fdctrl->fifo, BDRV_SECTOR_SIZE, 0) < 0) {
+            if (blk_pwrite(cur_drv->blk, fd_offset(cur_drv), BDRV_SECTOR_SIZE,
+                           fdctrl->fifo, 0) < 0) {
                 FLOPPY_DPRINTF("error writing sector %d\n",
                                fd_sector(cur_drv));
                 fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM | FD_SR0_SEEK, 0x00, 0x00);
@@ -1740,8 +1740,8 @@ static uint32_t fdctrl_read_data(FDCtrl *fdctrl)
                                    fd_sector(cur_drv));
                     return 0;
                 }
-            if (blk_pread(cur_drv->blk, fd_offset(cur_drv), fdctrl->fifo,
-                          BDRV_SECTOR_SIZE, 0)
+            if (blk_pread(cur_drv->blk, fd_offset(cur_drv), BDRV_SECTOR_SIZE,
+                          fdctrl->fifo, 0)
                 < 0) {
                 FLOPPY_DPRINTF("error getting sector %d\n",
                                fd_sector(cur_drv));
@@ -1820,8 +1820,8 @@ static void fdctrl_format_sector(FDCtrl *fdctrl)
     }
     memset(fdctrl->fifo, 0, FD_SECTOR_LEN);
     if (cur_drv->blk == NULL ||
-        blk_pwrite(cur_drv->blk, fd_offset(cur_drv), fdctrl->fifo,
-                   BDRV_SECTOR_SIZE, 0) < 0) {
+        blk_pwrite(cur_drv->blk, fd_offset(cur_drv), BDRV_SECTOR_SIZE,
+                   fdctrl->fifo, 0) < 0) {
         FLOPPY_DPRINTF("error formatting sector %d\n", fd_sector(cur_drv));
         fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM | FD_SR0_SEEK, 0x00, 0x00);
     } else {
@@ -2244,8 +2244,8 @@ static void fdctrl_write_data(FDCtrl *fdctrl, uint32_t value)
         if (pos == FD_SECTOR_LEN - 1 ||
             fdctrl->data_pos == fdctrl->data_len) {
             cur_drv = get_cur_drv(fdctrl);
-            if (blk_pwrite(cur_drv->blk, fd_offset(cur_drv), fdctrl->fifo,
-                           BDRV_SECTOR_SIZE, 0) < 0) {
+            if (blk_pwrite(cur_drv->blk, fd_offset(cur_drv), BDRV_SECTOR_SIZE,
+                           fdctrl->fifo, 0) < 0) {
                 FLOPPY_DPRINTF("error writing sector %d\n",
                                fd_sector(cur_drv));
                 break;
diff --git a/hw/block/hd-geometry.c b/hw/block/hd-geometry.c
index 24933ea..1120943 100644
--- a/hw/block/hd-geometry.c
+++ b/hw/block/hd-geometry.c
@@ -63,7 +63,7 @@ static int guess_disk_lchs(BlockBackend *blk,
 
     blk_get_geometry(blk, &nb_sectors);
 
-    if (blk_pread(blk, 0, buf, BDRV_SECTOR_SIZE, 0) < 0) {
+    if (blk_pread(blk, 0, BDRV_SECTOR_SIZE, buf, 0) < 0) {
         return -1;
     }
     /* test msdos magic */
diff --git a/hw/block/m25p80.c b/hw/block/m25p80.c
index 7e476b8..46dd9ee 100644
--- a/hw/block/m25p80.c
+++ b/hw/block/m25p80.c
@@ -1532,7 +1532,7 @@ static void m25p80_realize(SSIPeripheral *ss, Error **errp)
         trace_m25p80_binding(s);
         s->storage = blk_blockalign(s->blk, s->size);
 
-        if (blk_pread(s->blk, 0, s->storage, s->size, 0) < 0) {
+        if (blk_pread(s->blk, 0, s->size, s->storage, 0) < 0) {
             error_setg(errp, "failed to read the initial flash content");
             return;
         }
diff --git a/hw/block/nand.c b/hw/block/nand.c
index ea3d33a..1aee1cb 100644
--- a/hw/block/nand.c
+++ b/hw/block/nand.c
@@ -666,8 +666,8 @@ static void glue(nand_blk_write_, NAND_PAGE_SIZE)(NANDFlashState *s)
         sector = SECTOR(s->addr);
         off = (s->addr & PAGE_MASK) + s->offset;
         soff = SECTOR_OFFSET(s->addr);
-        if (blk_pread(s->blk, sector << BDRV_SECTOR_BITS, iobuf,
-                      PAGE_SECTORS << BDRV_SECTOR_BITS, 0) < 0) {
+        if (blk_pread(s->blk, sector << BDRV_SECTOR_BITS,
+                      PAGE_SECTORS << BDRV_SECTOR_BITS, iobuf, 0) < 0) {
             printf("%s: read error in sector %" PRIu64 "\n", __func__, sector);
             return;
         }
@@ -679,24 +679,24 @@ static void glue(nand_blk_write_, NAND_PAGE_SIZE)(NANDFlashState *s)
                             MIN(OOB_SIZE, off + s->iolen - NAND_PAGE_SIZE));
         }
 
-        if (blk_pwrite(s->blk, sector << BDRV_SECTOR_BITS, iobuf,
-                       PAGE_SECTORS << BDRV_SECTOR_BITS, 0) < 0) {
+        if (blk_pwrite(s->blk, sector << BDRV_SECTOR_BITS,
+                       PAGE_SECTORS << BDRV_SECTOR_BITS, iobuf, 0) < 0) {
             printf("%s: write error in sector %" PRIu64 "\n", __func__, sector);
         }
     } else {
         off = PAGE_START(s->addr) + (s->addr & PAGE_MASK) + s->offset;
         sector = off >> 9;
         soff = off & 0x1ff;
-        if (blk_pread(s->blk, sector << BDRV_SECTOR_BITS, iobuf,
-                      (PAGE_SECTORS + 2) << BDRV_SECTOR_BITS, 0) < 0) {
+        if (blk_pread(s->blk, sector << BDRV_SECTOR_BITS,
+                      (PAGE_SECTORS + 2) << BDRV_SECTOR_BITS, iobuf, 0) < 0) {
             printf("%s: read error in sector %" PRIu64 "\n", __func__, sector);
             return;
         }
 
         mem_and(iobuf + soff, s->io, s->iolen);
 
-        if (blk_pwrite(s->blk, sector << BDRV_SECTOR_BITS, iobuf,
-                       (PAGE_SECTORS + 2) << BDRV_SECTOR_BITS, 0) < 0) {
+        if (blk_pwrite(s->blk, sector << BDRV_SECTOR_BITS,
+                       (PAGE_SECTORS + 2) << BDRV_SECTOR_BITS, iobuf, 0) < 0) {
             printf("%s: write error in sector %" PRIu64 "\n", __func__, sector);
         }
     }
@@ -723,20 +723,20 @@ static void glue(nand_blk_erase_, NAND_PAGE_SIZE)(NANDFlashState *s)
         i = SECTOR(addr);
         page = SECTOR(addr + (1 << (ADDR_SHIFT + s->erase_shift)));
         for (; i < page; i ++)
-            if (blk_pwrite(s->blk, i << BDRV_SECTOR_BITS, iobuf,
-                           BDRV_SECTOR_SIZE, 0) < 0) {
+            if (blk_pwrite(s->blk, i << BDRV_SECTOR_BITS,
+                           BDRV_SECTOR_SIZE, iobuf, 0) < 0) {
                 printf("%s: write error in sector %" PRIu64 "\n", __func__, i);
             }
     } else {
         addr = PAGE_START(addr);
         page = addr >> 9;
-        if (blk_pread(s->blk, page << BDRV_SECTOR_BITS, iobuf,
-                      BDRV_SECTOR_SIZE, 0) < 0) {
+        if (blk_pread(s->blk, page << BDRV_SECTOR_BITS,
+                      BDRV_SECTOR_SIZE, iobuf, 0) < 0) {
             printf("%s: read error in sector %" PRIu64 "\n", __func__, page);
         }
         memset(iobuf + (addr & 0x1ff), 0xff, (~addr & 0x1ff) + 1);
-        if (blk_pwrite(s->blk, page << BDRV_SECTOR_BITS, iobuf,
-                       BDRV_SECTOR_SIZE, 0) < 0) {
+        if (blk_pwrite(s->blk, page << BDRV_SECTOR_BITS,
+                       BDRV_SECTOR_SIZE, iobuf, 0) < 0) {
             printf("%s: write error in sector %" PRIu64 "\n", __func__, page);
         }
 
@@ -744,20 +744,20 @@ static void glue(nand_blk_erase_, NAND_PAGE_SIZE)(NANDFlashState *s)
         i = (addr & ~0x1ff) + 0x200;
         for (addr += ((NAND_PAGE_SIZE + OOB_SIZE) << s->erase_shift) - 0x200;
                         i < addr; i += 0x200) {
-            if (blk_pwrite(s->blk, i, iobuf, BDRV_SECTOR_SIZE, 0) < 0) {
+            if (blk_pwrite(s->blk, i, BDRV_SECTOR_SIZE, iobuf, 0) < 0) {
                 printf("%s: write error in sector %" PRIu64 "\n",
                        __func__, i >> 9);
             }
         }
 
         page = i >> 9;
-        if (blk_pread(s->blk, page << BDRV_SECTOR_BITS, iobuf,
-                      BDRV_SECTOR_SIZE, 0) < 0) {
+        if (blk_pread(s->blk, page << BDRV_SECTOR_BITS,
+                      BDRV_SECTOR_SIZE, iobuf, 0) < 0) {
             printf("%s: read error in sector %" PRIu64 "\n", __func__, page);
         }
         memset(iobuf, 0xff, ((addr - 1) & 0x1ff) + 1);
-        if (blk_pwrite(s->blk, page << BDRV_SECTOR_BITS, iobuf,
-                       BDRV_SECTOR_SIZE, 0) < 0) {
+        if (blk_pwrite(s->blk, page << BDRV_SECTOR_BITS,
+                       BDRV_SECTOR_SIZE, iobuf, 0) < 0) {
             printf("%s: write error in sector %" PRIu64 "\n", __func__, page);
         }
     }
@@ -772,8 +772,8 @@ static void glue(nand_blk_load_, NAND_PAGE_SIZE)(NANDFlashState *s,
 
     if (s->blk) {
         if (s->mem_oob) {
-            if (blk_pread(s->blk, SECTOR(addr) << BDRV_SECTOR_BITS, s->io,
-                          PAGE_SECTORS << BDRV_SECTOR_BITS, 0) < 0) {
+            if (blk_pread(s->blk, SECTOR(addr) << BDRV_SECTOR_BITS,
+                          PAGE_SECTORS << BDRV_SECTOR_BITS, s->io, 0) < 0) {
                 printf("%s: read error in sector %" PRIu64 "\n",
                                 __func__, SECTOR(addr));
             }
@@ -782,8 +782,9 @@ static void glue(nand_blk_load_, NAND_PAGE_SIZE)(NANDFlashState *s,
                             OOB_SIZE);
             s->ioaddr = s->io + SECTOR_OFFSET(s->addr) + offset;
         } else {
-            if (blk_pread(s->blk, PAGE_START(addr), s->io,
-                          (PAGE_SECTORS + 2) << BDRV_SECTOR_BITS, 0) < 0) {
+            if (blk_pread(s->blk, PAGE_START(addr),
+                          (PAGE_SECTORS + 2) << BDRV_SECTOR_BITS, s->io, 0)
+                < 0) {
                 printf("%s: read error in sector %" PRIu64 "\n",
                                 __func__, PAGE_START(addr) >> 9);
             }
diff --git a/hw/block/onenand.c b/hw/block/onenand.c
index 1225ec8..1fde975 100644
--- a/hw/block/onenand.c
+++ b/hw/block/onenand.c
@@ -229,8 +229,8 @@ static void onenand_reset(OneNANDState *s, int cold)
         /* Lock the whole flash */
         memset(s->blockwp, ONEN_LOCK_LOCKED, s->blocks);
 
-        if (s->blk_cur && blk_pread(s->blk_cur, 0, s->boot[0],
-                                    8 << BDRV_SECTOR_BITS, 0) < 0) {
+        if (s->blk_cur && blk_pread(s->blk_cur, 0, 8 << BDRV_SECTOR_BITS,
+                                    s->boot[0], 0) < 0) {
             hw_error("%s: Loading the BootRAM failed.\n", __func__);
         }
     }
@@ -249,8 +249,8 @@ static inline int onenand_load_main(OneNANDState *s, int sec, int secn,
     assert(UINT32_MAX >> BDRV_SECTOR_BITS > sec);
     assert(UINT32_MAX >> BDRV_SECTOR_BITS > secn);
     if (s->blk_cur) {
-        return blk_pread(s->blk_cur, sec << BDRV_SECTOR_BITS, dest,
-                         secn << BDRV_SECTOR_BITS, 0) < 0;
+        return blk_pread(s->blk_cur, sec << BDRV_SECTOR_BITS,
+                         secn << BDRV_SECTOR_BITS, dest, 0) < 0;
     } else if (sec + secn > s->secs_cur) {
         return 1;
     }
@@ -274,7 +274,7 @@ static inline int onenand_prog_main(OneNANDState *s, int sec, int secn,
         uint8_t *dp = 0;
         if (s->blk_cur) {
             dp = g_malloc(size);
-            if (!dp || blk_pread(s->blk_cur, offset, dp, size, 0) < 0) {
+            if (!dp || blk_pread(s->blk_cur, offset, size, dp, 0) < 0) {
                 result = 1;
             }
         } else {
@@ -290,7 +290,7 @@ static inline int onenand_prog_main(OneNANDState *s, int sec, int secn,
                 dp[i] &= sp[i];
             }
             if (s->blk_cur) {
-                result = blk_pwrite(s->blk_cur, offset, dp, size, 0) < 0;
+                result = blk_pwrite(s->blk_cur, offset, size, dp, 0) < 0;
             }
         }
         if (dp && s->blk_cur) {
@@ -308,7 +308,7 @@ static inline int onenand_load_spare(OneNANDState *s, int sec, int secn,
 
     if (s->blk_cur) {
         uint32_t offset = (s->secs_cur + (sec >> 5)) << BDRV_SECTOR_BITS;
-        if (blk_pread(s->blk_cur, offset, buf, BDRV_SECTOR_SIZE, 0) < 0) {
+        if (blk_pread(s->blk_cur, offset, BDRV_SECTOR_SIZE, buf, 0) < 0) {
             return 1;
         }
         memcpy(dest, buf + ((sec & 31) << 4), secn << 4);
@@ -333,7 +333,7 @@ static inline int onenand_prog_spare(OneNANDState *s, int sec, int secn,
         if (s->blk_cur) {
             dp = g_malloc(512);
             if (!dp
-                || blk_pread(s->blk_cur, offset, dp, BDRV_SECTOR_SIZE, 0) < 0) {
+                || blk_pread(s->blk_cur, offset, BDRV_SECTOR_SIZE, dp, 0) < 0) {
                 result = 1;
             } else {
                 dpp = dp + ((sec & 31) << 4);
@@ -351,8 +351,8 @@ static inline int onenand_prog_spare(OneNANDState *s, int sec, int secn,
                 dpp[i] &= sp[i];
             }
             if (s->blk_cur) {
-                result = blk_pwrite(s->blk_cur, offset, dp,
-                                    BDRV_SECTOR_SIZE, 0) < 0;
+                result = blk_pwrite(s->blk_cur, offset, BDRV_SECTOR_SIZE, dp,
+                                    0) < 0;
             }
         }
         g_free(dp);
@@ -370,17 +370,17 @@ static inline int onenand_erase(OneNANDState *s, int sec, int num)
     for (; num > 0; num--, sec++) {
         if (s->blk_cur) {
             int erasesec = s->secs_cur + (sec >> 5);
-            if (blk_pwrite(s->blk_cur, sec << BDRV_SECTOR_BITS, blankbuf,
-                           BDRV_SECTOR_SIZE, 0) < 0) {
+            if (blk_pwrite(s->blk_cur, sec << BDRV_SECTOR_BITS,
+                           BDRV_SECTOR_SIZE, blankbuf, 0) < 0) {
                 goto fail;
             }
-            if (blk_pread(s->blk_cur, erasesec << BDRV_SECTOR_BITS, tmpbuf,
-                          BDRV_SECTOR_SIZE, 0) < 0) {
+            if (blk_pread(s->blk_cur, erasesec << BDRV_SECTOR_BITS,
+                          BDRV_SECTOR_SIZE, tmpbuf, 0) < 0) {
                 goto fail;
             }
             memcpy(tmpbuf + ((sec & 31) << 4), blankbuf, 1 << 4);
-            if (blk_pwrite(s->blk_cur, erasesec << BDRV_SECTOR_BITS, tmpbuf,
-                           BDRV_SECTOR_SIZE, 0) < 0) {
+            if (blk_pwrite(s->blk_cur, erasesec << BDRV_SECTOR_BITS,
+                           BDRV_SECTOR_SIZE, tmpbuf, 0) < 0) {
                 goto fail;
             }
         } else {
diff --git a/hw/block/pflash_cfi01.c b/hw/block/pflash_cfi01.c
index 74c7190..0cbc2fb 100644
--- a/hw/block/pflash_cfi01.c
+++ b/hw/block/pflash_cfi01.c
@@ -392,8 +392,8 @@ static void pflash_update(PFlashCFI01 *pfl, int offset,
         /* widen to sector boundaries */
         offset = QEMU_ALIGN_DOWN(offset, BDRV_SECTOR_SIZE);
         offset_end = QEMU_ALIGN_UP(offset_end, BDRV_SECTOR_SIZE);
-        ret = blk_pwrite(pfl->blk, offset, pfl->storage + offset,
-                   offset_end - offset, 0);
+        ret = blk_pwrite(pfl->blk, offset, offset_end - offset,
+                         pfl->storage + offset, 0);
         if (ret < 0) {
             /* TODO set error bit in status */
             error_report("Could not update PFLASH: %s", strerror(-ret));
diff --git a/hw/block/pflash_cfi02.c b/hw/block/pflash_cfi02.c
index 02c514f..2a99b28 100644
--- a/hw/block/pflash_cfi02.c
+++ b/hw/block/pflash_cfi02.c
@@ -400,8 +400,8 @@ static void pflash_update(PFlashCFI02 *pfl, int offset, int size)
         /* widen to sector boundaries */
         offset = QEMU_ALIGN_DOWN(offset, BDRV_SECTOR_SIZE);
         offset_end = QEMU_ALIGN_UP(offset_end, BDRV_SECTOR_SIZE);
-        ret = blk_pwrite(pfl->blk, offset, pfl->storage + offset,
-                   offset_end - offset, 0);
+        ret = blk_pwrite(pfl->blk, offset, offset_end - offset,
+                         pfl->storage + offset, 0);
         if (ret < 0) {
             /* TODO set error bit in status */
             error_report("Could not update PFLASH: %s", strerror(-ret));
diff --git a/hw/ide/atapi.c b/hw/ide/atapi.c
index cd4b5c6..0a9aa6f 100644
--- a/hw/ide/atapi.c
+++ b/hw/ide/atapi.c
@@ -98,11 +98,11 @@ cd_read_sector_sync(IDEState *s)
     switch (s->cd_sector_size) {
     case 2048:
         ret = blk_pread(s->blk, (int64_t)s->lba << ATAPI_SECTOR_BITS,
-                        s->io_buffer, ATAPI_SECTOR_SIZE, 0);
+                        ATAPI_SECTOR_SIZE, s->io_buffer, 0);
         break;
     case 2352:
         ret = blk_pread(s->blk, (int64_t)s->lba << ATAPI_SECTOR_BITS,
-                        s->io_buffer + 16, ATAPI_SECTOR_SIZE, 0);
+                        ATAPI_SECTOR_SIZE, s->io_buffer + 16, 0);
         if (ret >= 0) {
             cd_data_to_raw(s->io_buffer, s->lba);
         }
diff --git a/hw/misc/mac_via.c b/hw/misc/mac_via.c
index 252b171..fba85a5 100644
--- a/hw/misc/mac_via.c
+++ b/hw/misc/mac_via.c
@@ -351,7 +351,7 @@ static void via1_one_second(void *opaque)
 static void pram_update(MOS6522Q800VIA1State *v1s)
 {
     if (v1s->blk) {
-        if (blk_pwrite(v1s->blk, 0, v1s->PRAM, sizeof(v1s->PRAM), 0) < 0) {
+        if (blk_pwrite(v1s->blk, 0, sizeof(v1s->PRAM), v1s->PRAM, 0) < 0) {
             qemu_log("pram_update: cannot write to file\n");
         }
     }
@@ -1029,7 +1029,7 @@ static void mos6522_q800_via1_realize(DeviceState *dev, Error **errp)
             return;
         }
 
-        ret = blk_pread(v1s->blk, 0, v1s->PRAM, sizeof(v1s->PRAM), 0);
+        ret = blk_pread(v1s->blk, 0, sizeof(v1s->PRAM), v1s->PRAM, 0);
         if (ret < 0) {
             error_setg(errp, "can't read PRAM contents");
             return;
diff --git a/hw/misc/sifive_u_otp.c b/hw/misc/sifive_u_otp.c
index c730bb1..6d7fdb0 100644
--- a/hw/misc/sifive_u_otp.c
+++ b/hw/misc/sifive_u_otp.c
@@ -64,8 +64,8 @@ static uint64_t sifive_u_otp_read(void *opaque, hwaddr addr, unsigned int size)
             if (s->blk) {
                 int32_t buf;
 
-                if (blk_pread(s->blk, s->pa * SIFIVE_U_OTP_FUSE_WORD, &buf,
-                              SIFIVE_U_OTP_FUSE_WORD, 0) < 0) {
+                if (blk_pread(s->blk, s->pa * SIFIVE_U_OTP_FUSE_WORD,
+                              SIFIVE_U_OTP_FUSE_WORD, &buf, 0) < 0) {
                     error_report("read error index<%d>", s->pa);
                     return 0xff;
                 }
@@ -167,8 +167,8 @@ static void sifive_u_otp_write(void *opaque, hwaddr addr,
             /* write to backend */
             if (s->blk) {
                 if (blk_pwrite(s->blk, s->pa * SIFIVE_U_OTP_FUSE_WORD,
-                               &s->fuse[s->pa], SIFIVE_U_OTP_FUSE_WORD,
-                               0) < 0) {
+                               SIFIVE_U_OTP_FUSE_WORD, &s->fuse[s->pa], 0)
+                    < 0) {
                     error_report("write error index<%d>", s->pa);
                 }
             }
@@ -240,7 +240,7 @@ static void sifive_u_otp_realize(DeviceState *dev, Error **errp)
                 return;
             }
 
-            if (blk_pread(s->blk, 0, s->fuse, filesize, 0) < 0) {
+            if (blk_pread(s->blk, 0, filesize, s->fuse, 0) < 0) {
                 error_setg(errp, "failed to read the initial flash content");
                 return;
             }
@@ -261,14 +261,14 @@ static void sifive_u_otp_realize(DeviceState *dev, Error **errp)
 
         serial_data = s->serial;
         if (blk_pwrite(s->blk, index * SIFIVE_U_OTP_FUSE_WORD,
-                       &serial_data, SIFIVE_U_OTP_FUSE_WORD, 0) < 0) {
+                       SIFIVE_U_OTP_FUSE_WORD, &serial_data, 0) < 0) {
             error_setg(errp, "failed to write index<%d>", index);
             return;
         }
 
         serial_data = ~(s->serial);
         if (blk_pwrite(s->blk, (index + 1) * SIFIVE_U_OTP_FUSE_WORD,
-                       &serial_data, SIFIVE_U_OTP_FUSE_WORD, 0) < 0) {
+                       SIFIVE_U_OTP_FUSE_WORD, &serial_data, 0) < 0) {
             error_setg(errp, "failed to write index<%d>", index + 1);
             return;
         }
diff --git a/hw/nvram/eeprom_at24c.c b/hw/nvram/eeprom_at24c.c
index df3eef1..2d4d8b9 100644
--- a/hw/nvram/eeprom_at24c.c
+++ b/hw/nvram/eeprom_at24c.c
@@ -64,7 +64,7 @@ int at24c_eeprom_event(I2CSlave *s, enum i2c_event event)
     case I2C_START_RECV:
         DPRINTK("clear\n");
         if (ee->blk && ee->changed) {
-            int ret = blk_pwrite(ee->blk, 0, ee->mem, ee->rsize, 0);
+            int ret = blk_pwrite(ee->blk, 0, ee->rsize, ee->mem, 0);
             if (ret < 0) {
                 ERR(TYPE_AT24C_EE
                         " : failed to write backing file\n");
@@ -165,7 +165,7 @@ void at24c_eeprom_reset(DeviceState *state)
     memset(ee->mem, 0, ee->rsize);
 
     if (ee->blk) {
-        int ret = blk_pread(ee->blk, 0, ee->mem, ee->rsize, 0);
+        int ret = blk_pread(ee->blk, 0, ee->rsize, ee->mem, 0);
 
         if (ret < 0) {
             ERR(TYPE_AT24C_EE
diff --git a/hw/nvram/spapr_nvram.c b/hw/nvram/spapr_nvram.c
index d035067..2d72f30 100644
--- a/hw/nvram/spapr_nvram.c
+++ b/hw/nvram/spapr_nvram.c
@@ -130,7 +130,7 @@ static void rtas_nvram_store(PowerPCCPU *cpu, SpaprMachineState *spapr,
 
     ret = 0;
     if (nvram->blk) {
-        ret = blk_pwrite(nvram->blk, offset, membuf, len, 0);
+        ret = blk_pwrite(nvram->blk, offset, len, membuf, 0);
     }
 
     assert(nvram->buf);
@@ -179,7 +179,7 @@ static void spapr_nvram_realize(SpaprVioDevice *dev, Error **errp)
     }
 
     if (nvram->blk) {
-        ret = blk_pread(nvram->blk, 0, nvram->buf, nvram->size, 0);
+        ret = blk_pread(nvram->blk, 0, nvram->size, nvram->buf, 0);
 
         if (ret < 0) {
             error_setg(errp, "can't read spapr-nvram contents");
@@ -224,7 +224,7 @@ static void postload_update_cb(void *opaque, bool running, RunState state)
     qemu_del_vm_change_state_handler(nvram->vmstate);
     nvram->vmstate = NULL;
 
-    blk_pwrite(nvram->blk, 0, nvram->buf, nvram->size, 0);
+    blk_pwrite(nvram->blk, 0, nvram->size, nvram->buf, 0);
 }
 
 static int spapr_nvram_post_load(void *opaque, int version_id)
diff --git a/hw/nvram/xlnx-bbram.c b/hw/nvram/xlnx-bbram.c
index cb245b8..c6b484c 100644
--- a/hw/nvram/xlnx-bbram.c
+++ b/hw/nvram/xlnx-bbram.c
@@ -124,7 +124,7 @@ static void bbram_bdrv_read(XlnxBBRam *s, Error **errp)
                     blk_name(s->blk));
     }
 
-    if (blk_pread(s->blk, 0, ram, nr, 0) < 0) {
+    if (blk_pread(s->blk, 0, nr, ram, 0) < 0) {
         error_setg(errp,
                    "%s: Failed to read %u bytes from BBRAM backstore.",
                    blk_name(s->blk), nr);
@@ -159,7 +159,7 @@ static void bbram_bdrv_sync(XlnxBBRam *s, uint64_t hwaddr)
     }
 
     offset = hwaddr - A_BBRAM_0;
-    rc = blk_pwrite(s->blk, offset, &le32, 4, 0);
+    rc = blk_pwrite(s->blk, offset, 4, &le32, 0);
     if (rc < 0) {
         bbram_bdrv_error(s, rc, g_strdup_printf("write to offset %u", offset));
     }
diff --git a/hw/nvram/xlnx-efuse.c b/hw/nvram/xlnx-efuse.c
index edaac9c..fdfffaa 100644
--- a/hw/nvram/xlnx-efuse.c
+++ b/hw/nvram/xlnx-efuse.c
@@ -77,7 +77,7 @@ static int efuse_bdrv_read(XlnxEFuse *s, Error **errp)
                     blk_name(s->blk));
     }
 
-    if (blk_pread(s->blk, 0, ram, nr, 0) < 0) {
+    if (blk_pread(s->blk, 0, nr, ram, 0) < 0) {
         error_setg(errp, "%s: Failed to read %u bytes from eFUSE backstore.",
                    blk_name(s->blk), nr);
         return -1;
@@ -105,7 +105,7 @@ static void efuse_bdrv_sync(XlnxEFuse *s, unsigned int bit)
     le32 = cpu_to_le32(xlnx_efuse_get_row(s, bit));
 
     row_offset = (bit / 32) * 4;
-    if (blk_pwrite(s->blk, row_offset, &le32, 4, 0) < 0) {
+    if (blk_pwrite(s->blk, row_offset, 4, &le32, 0) < 0) {
         error_report("%s: Failed to write offset %u of eFUSE backstore.",
                      blk_name(s->blk), row_offset);
     }
diff --git a/hw/ppc/pnv_pnor.c b/hw/ppc/pnv_pnor.c
index f341f5a..6280408 100644
--- a/hw/ppc/pnv_pnor.c
+++ b/hw/ppc/pnv_pnor.c
@@ -44,8 +44,8 @@ static void pnv_pnor_update(PnvPnor *s, int offset, int size)
     offset = QEMU_ALIGN_DOWN(offset, BDRV_SECTOR_SIZE);
     offset_end = QEMU_ALIGN_UP(offset_end, BDRV_SECTOR_SIZE);
 
-    ret = blk_pwrite(s->blk, offset, s->storage + offset,
-                     offset_end - offset, 0);
+    ret = blk_pwrite(s->blk, offset, offset_end - offset, s->storage + offset,
+                     0);
     if (ret < 0) {
         error_report("Could not update PNOR offset=0x%" PRIx32" : %s", offset,
                      strerror(-ret));
@@ -99,7 +99,7 @@ static void pnv_pnor_realize(DeviceState *dev, Error **errp)
 
         s->storage = blk_blockalign(s->blk, s->size);
 
-        if (blk_pread(s->blk, 0, s->storage, s->size, 0) < 0) {
+        if (blk_pread(s->blk, 0, s->size, s->storage, 0) < 0) {
             error_setg(errp, "failed to read the initial flash content");
             return;
         }
diff --git a/hw/sd/sd.c b/hw/sd/sd.c
index 701170b..da5bdd1 100644
--- a/hw/sd/sd.c
+++ b/hw/sd/sd.c
@@ -752,7 +752,7 @@ void sd_set_cb(SDState *sd, qemu_irq readonly, qemu_irq insert)
 static void sd_blk_read(SDState *sd, uint64_t addr, uint32_t len)
 {
     trace_sdcard_read_block(addr, len);
-    if (!sd->blk || blk_pread(sd->blk, addr, sd->data, len, 0) < 0) {
+    if (!sd->blk || blk_pread(sd->blk, addr, len, sd->data, 0) < 0) {
         fprintf(stderr, "sd_blk_read: read error on host side\n");
     }
 }
@@ -760,7 +760,7 @@ static void sd_blk_read(SDState *sd, uint64_t addr, uint32_t len)
 static void sd_blk_write(SDState *sd, uint64_t addr, uint32_t len)
 {
     trace_sdcard_write_block(addr, len);
-    if (!sd->blk || blk_pwrite(sd->blk, addr, sd->data, len, 0) < 0) {
+    if (!sd->blk || blk_pwrite(sd->blk, addr, len, sd->data, 0) < 0) {
         fprintf(stderr, "sd_blk_write: write error on host side\n");
     }
 }