Add the response string as a parameter to fastboot_okay/fail, instead
of modifying a global, to match the contract expected by the AOSP
U-Boot code.

Signed-off-by: Alex Kiernan <alex.kier...@gmail.com>
Reviewed-by: Joe Hershberger <joe.hershber...@ni.com>
---

Changes in v5: None
Changes in v4: None
Changes in v3:
- refactor for changes in master

Changes in v2: None

 cmd/mmc.c                       |  2 +-
 common/image-sparse.c           | 32 +++++++++-------
 drivers/fastboot/fb_mmc.c       | 83 +++++++++++++++++++++++------------------
 drivers/fastboot/fb_nand.c      | 34 +++++++++--------
 drivers/usb/gadget/f_fastboot.c | 35 +++++++----------
 include/fastboot.h              |  4 +-
 include/fb_mmc.h                |  4 +-
 include/fb_nand.h               |  4 +-
 include/image-sparse.h          |  4 +-
 9 files changed, 105 insertions(+), 97 deletions(-)

diff --git a/cmd/mmc.c b/cmd/mmc.c
index 68bbf1f..cc44525 100644
--- a/cmd/mmc.c
+++ b/cmd/mmc.c
@@ -367,7 +367,7 @@ static int do_mmc_sparse_write(cmd_tbl_t *cmdtp, int flag,
        sparse.mssg = NULL;
        sprintf(dest, "0x" LBAF, sparse.start * sparse.blksz);
 
-       if (write_sparse_image(&sparse, dest, addr))
+       if (write_sparse_image(&sparse, dest, addr, NULL))
                return CMD_RET_FAILURE;
        else
                return CMD_RET_SUCCESS;
diff --git a/common/image-sparse.c b/common/image-sparse.c
index 9223b9a..1ae7a4d 100644
--- a/common/image-sparse.c
+++ b/common/image-sparse.c
@@ -48,10 +48,10 @@
 #define CONFIG_FASTBOOT_FLASH_FILLBUF_SIZE (1024 * 512)
 #endif
 
-static void default_log(const char *ignored) {}
+static void default_log(const char *ignored, char *response) {}
 
 int write_sparse_image(struct sparse_storage *info,
-                      const char *part_name, void *data)
+                      const char *part_name, void *data, char *response)
 {
        lbaint_t blk;
        lbaint_t blkcnt;
@@ -104,7 +104,7 @@ int write_sparse_image(struct sparse_storage *info,
        if (offset) {
                printf("%s: Sparse image block size issue [%u]\n",
                       __func__, sparse_header->blk_sz);
-               info->mssg("sparse image block size issue");
+               info->mssg("sparse image block size issue", response);
                return -1;
        }
 
@@ -139,7 +139,8 @@ int write_sparse_image(struct sparse_storage *info,
                case CHUNK_TYPE_RAW:
                        if (chunk_header->total_sz !=
                            (sparse_header->chunk_hdr_sz + chunk_data_sz)) {
-                               info->mssg("Bogus chunk size for chunk type 
Raw");
+                               info->mssg("Bogus chunk size for chunk type 
Raw",
+                                          response);
                                return -1;
                        }
 
@@ -147,7 +148,8 @@ int write_sparse_image(struct sparse_storage *info,
                                printf(
                                    "%s: Request would exceed partition 
size!\n",
                                    __func__);
-                               info->mssg("Request would exceed partition 
size!");
+                               info->mssg("Request would exceed partition 
size!",
+                                          response);
                                return -1;
                        }
 
@@ -157,7 +159,7 @@ int write_sparse_image(struct sparse_storage *info,
                                printf("%s: %s" LBAFU " [" LBAFU "]\n",
                                       __func__, "Write failed, block #",
                                       blk, blks);
-                               info->mssg("flash write failure");
+                               info->mssg("flash write failure", response);
                                return -1;
                        }
                        blk += blks;
@@ -169,7 +171,7 @@ int write_sparse_image(struct sparse_storage *info,
                case CHUNK_TYPE_FILL:
                        if (chunk_header->total_sz !=
                            (sparse_header->chunk_hdr_sz + sizeof(uint32_t))) {
-                               info->mssg("Bogus chunk size for chunk type 
FILL");
+                               info->mssg("Bogus chunk size for chunk type 
FILL", response);
                                return -1;
                        }
 
@@ -179,7 +181,8 @@ int write_sparse_image(struct sparse_storage *info,
                                                info->blksz * fill_buf_num_blks,
                                                ARCH_DMA_MINALIGN));
                        if (!fill_buf) {
-                               info->mssg("Malloc failed for: 
CHUNK_TYPE_FILL");
+                               info->mssg("Malloc failed for: CHUNK_TYPE_FILL",
+                                          response);
                                return -1;
                        }
 
@@ -196,7 +199,8 @@ int write_sparse_image(struct sparse_storage *info,
                                printf(
                                    "%s: Request would exceed partition 
size!\n",
                                    __func__);
-                               info->mssg("Request would exceed partition 
size!");
+                               info->mssg("Request would exceed partition 
size!",
+                                          response);
                                return -1;
                        }
 
@@ -211,7 +215,8 @@ int write_sparse_image(struct sparse_storage *info,
                                               __func__,
                                               "Write failed, block #",
                                               blk, j);
-                                       info->mssg("flash write failure");
+                                       info->mssg("flash write failure",
+                                                  response);
                                        free(fill_buf);
                                        return -1;
                                }
@@ -231,7 +236,8 @@ int write_sparse_image(struct sparse_storage *info,
                case CHUNK_TYPE_CRC32:
                        if (chunk_header->total_sz !=
                            sparse_header->chunk_hdr_sz) {
-                               info->mssg("Bogus chunk size for chunk type 
Dont Care");
+                               info->mssg("Bogus chunk size for chunk type 
Dont Care",
+                                          response);
                                return -1;
                        }
                        total_blocks += chunk_header->chunk_sz;
@@ -241,7 +247,7 @@ int write_sparse_image(struct sparse_storage *info,
                default:
                        printf("%s: Unknown chunk type: %x\n", __func__,
                               chunk_header->chunk_type);
-                       info->mssg("Unknown chunk type");
+                       info->mssg("Unknown chunk type", response);
                        return -1;
                }
        }
@@ -251,7 +257,7 @@ int write_sparse_image(struct sparse_storage *info,
        printf("........ wrote %u bytes to '%s'\n", bytes_written, part_name);
 
        if (total_blocks != sparse_header->total_blks) {
-               info->mssg("sparse image write failure");
+               info->mssg("sparse image write failure", response);
                return -1;
        }
 
diff --git a/drivers/fastboot/fb_mmc.c b/drivers/fastboot/fb_mmc.c
index 46f0073..1bcb2e5 100644
--- a/drivers/fastboot/fb_mmc.c
+++ b/drivers/fastboot/fb_mmc.c
@@ -73,7 +73,7 @@ static lbaint_t fb_mmc_sparse_reserve(struct sparse_storage 
*info,
 
 static void write_raw_image(struct blk_desc *dev_desc, disk_partition_t *info,
                const char *part_name, void *buffer,
-               unsigned int download_bytes)
+               unsigned int download_bytes, char *response)
 {
        lbaint_t blkcnt;
        lbaint_t blks;
@@ -84,7 +84,7 @@ static void write_raw_image(struct blk_desc *dev_desc, 
disk_partition_t *info,
 
        if (blkcnt > info->size) {
                pr_err("too large for partition: '%s'\n", part_name);
-               fastboot_fail("too large for partition");
+               fastboot_fail("too large for partition", response);
                return;
        }
 
@@ -93,13 +93,13 @@ static void write_raw_image(struct blk_desc *dev_desc, 
disk_partition_t *info,
        blks = blk_dwrite(dev_desc, info->start, blkcnt, buffer);
        if (blks != blkcnt) {
                pr_err("failed writing to device %d\n", dev_desc->devnum);
-               fastboot_fail("failed writing to device");
+               fastboot_fail("failed writing to device", response);
                return;
        }
 
        printf("........ wrote " LBAFU " bytes to '%s'\n", blkcnt * info->blksz,
               part_name);
-       fastboot_okay("");
+       fastboot_okay(NULL, response);
 }
 
 #ifdef CONFIG_ANDROID_BOOT_IMAGE
@@ -114,7 +114,8 @@ static void write_raw_image(struct blk_desc *dev_desc, 
disk_partition_t *info,
  */
 static lbaint_t fb_mmc_get_boot_header(struct blk_desc *dev_desc,
                                       disk_partition_t *info,
-                                      struct andr_img_hdr *hdr)
+                                      struct andr_img_hdr *hdr,
+                                      char *response)
 {
        ulong sector_size;              /* boot partition sector size */
        lbaint_t hdr_sectors;           /* boot image header sectors count */
@@ -125,7 +126,7 @@ static lbaint_t fb_mmc_get_boot_header(struct blk_desc 
*dev_desc,
        hdr_sectors = DIV_ROUND_UP(sizeof(struct andr_img_hdr), sector_size);
        if (hdr_sectors == 0) {
                pr_err("invalid number of boot sectors: 0");
-               fastboot_fail("invalid number of boot sectors: 0");
+               fastboot_fail("invalid number of boot sectors: 0", response);
                return 0;
        }
 
@@ -133,7 +134,8 @@ static lbaint_t fb_mmc_get_boot_header(struct blk_desc 
*dev_desc,
        res = blk_dread(dev_desc, info->start, hdr_sectors, (void *)hdr);
        if (res != hdr_sectors) {
                pr_err("cannot read header from boot partition");
-               fastboot_fail("cannot read header from boot partition");
+               fastboot_fail("cannot read header from boot partition",
+                             response);
                return 0;
        }
 
@@ -141,7 +143,7 @@ static lbaint_t fb_mmc_get_boot_header(struct blk_desc 
*dev_desc,
        res = android_image_check_header(hdr);
        if (res != 0) {
                pr_err("bad boot image magic");
-               fastboot_fail("boot partition not initialized");
+               fastboot_fail("boot partition not initialized", response);
                return 0;
        }
 
@@ -159,7 +161,8 @@ static lbaint_t fb_mmc_get_boot_header(struct blk_desc 
*dev_desc,
  */
 static int fb_mmc_update_zimage(struct blk_desc *dev_desc,
                                void *download_buffer,
-                               unsigned int download_bytes)
+                               unsigned int download_bytes,
+                               char *response)
 {
        uintptr_t hdr_addr;                     /* boot image header address */
        struct andr_img_hdr *hdr;               /* boot image header */
@@ -179,7 +182,7 @@ static int fb_mmc_update_zimage(struct blk_desc *dev_desc,
        res = part_get_info_by_name(dev_desc, BOOT_PARTITION_NAME, &info);
        if (res < 0) {
                pr_err("cannot find boot partition");
-               fastboot_fail("cannot find boot partition");
+               fastboot_fail("cannot find boot partition", response);
                return -1;
        }
 
@@ -188,17 +191,18 @@ static int fb_mmc_update_zimage(struct blk_desc *dev_desc,
        hdr = (struct andr_img_hdr *)hdr_addr;
 
        /* Read boot image header */
-       hdr_sectors = fb_mmc_get_boot_header(dev_desc, &info, hdr);
+       hdr_sectors = fb_mmc_get_boot_header(dev_desc, &info, hdr, response);
        if (hdr_sectors == 0) {
                pr_err("unable to read boot image header");
-               fastboot_fail("unable to read boot image header");
+               fastboot_fail("unable to read boot image header", response);
                return -1;
        }
 
        /* Check if boot image has second stage in it (we don't support it) */
        if (hdr->second_size > 0) {
                pr_err("moving second stage is not supported yet");
-               fastboot_fail("moving second stage is not supported yet");
+               fastboot_fail("moving second stage is not supported yet",
+                             response);
                return -1;
        }
 
@@ -216,7 +220,8 @@ static int fb_mmc_update_zimage(struct blk_desc *dev_desc,
                        ramdisk_buffer);
        if (res != ramdisk_sectors) {
                pr_err("cannot read ramdisk from boot partition");
-               fastboot_fail("cannot read ramdisk from boot partition");
+               fastboot_fail("cannot read ramdisk from boot partition",
+                             response);
                return -1;
        }
 
@@ -225,7 +230,7 @@ static int fb_mmc_update_zimage(struct blk_desc *dev_desc,
        res = blk_dwrite(dev_desc, info.start, hdr_sectors, (void *)hdr);
        if (res == 0) {
                pr_err("cannot writeback boot image header");
-               fastboot_fail("cannot write back boot image header");
+               fastboot_fail("cannot write back boot image header", response);
                return -1;
        }
 
@@ -237,7 +242,7 @@ static int fb_mmc_update_zimage(struct blk_desc *dev_desc,
                         download_buffer);
        if (res == 0) {
                pr_err("cannot write new kernel");
-               fastboot_fail("cannot write new kernel");
+               fastboot_fail("cannot write new kernel", response);
                return -1;
        }
 
@@ -249,18 +254,18 @@ static int fb_mmc_update_zimage(struct blk_desc *dev_desc,
                         ramdisk_buffer);
        if (res == 0) {
                pr_err("cannot write back original ramdisk");
-               fastboot_fail("cannot write back original ramdisk");
+               fastboot_fail("cannot write back original ramdisk", response);
                return -1;
        }
 
        puts("........ zImage was updated in boot partition\n");
-       fastboot_okay("");
+       fastboot_okay(NULL, response);
        return 0;
 }
 #endif
 
 void fb_mmc_flash_write(const char *cmd, void *download_buffer,
-                       unsigned int download_bytes)
+                       unsigned int download_bytes, char *response)
 {
        struct blk_desc *dev_desc;
        disk_partition_t info;
@@ -268,7 +273,7 @@ void fb_mmc_flash_write(const char *cmd, void 
*download_buffer,
        dev_desc = blk_get_dev("mmc", CONFIG_FASTBOOT_FLASH_MMC_DEV);
        if (!dev_desc || dev_desc->type == DEV_TYPE_UNKNOWN) {
                pr_err("invalid mmc device\n");
-               fastboot_fail("invalid mmc device");
+               fastboot_fail("invalid mmc device", response);
                return;
        }
 
@@ -279,16 +284,17 @@ void fb_mmc_flash_write(const char *cmd, void 
*download_buffer,
                if (is_valid_gpt_buf(dev_desc, download_buffer)) {
                        printf("%s: invalid GPT - refusing to write to flash\n",
                               __func__);
-                       fastboot_fail("invalid GPT partition");
+                       fastboot_fail("invalid GPT partition", response);
                        return;
                }
                if (write_mbr_and_gpt_partitions(dev_desc, download_buffer)) {
                        printf("%s: writing GPT partitions failed\n", __func__);
-                       fastboot_fail("writing GPT partitions failed");
+                       fastboot_fail("writing GPT partitions failed",
+                                     response);
                        return;
                }
                printf("........ success\n");
-               fastboot_okay("");
+               fastboot_okay(NULL, response);
                return;
        }
 #endif
@@ -299,30 +305,32 @@ void fb_mmc_flash_write(const char *cmd, void 
*download_buffer,
                if (is_valid_dos_buf(download_buffer)) {
                        printf("%s: invalid MBR - refusing to write to flash\n",
                               __func__);
-                       fastboot_fail("invalid MBR partition");
+                       fastboot_fail("invalid MBR partition", response);
                        return;
                }
                if (write_mbr_partition(dev_desc, download_buffer)) {
                        printf("%s: writing MBR partition failed\n", __func__);
-                       fastboot_fail("writing MBR partition failed");
+                       fastboot_fail("writing MBR partition failed",
+                                     response);
                        return;
                }
                printf("........ success\n");
-               fastboot_okay("");
+               fastboot_okay(NULL, response);
                return;
        }
 #endif
 
 #ifdef CONFIG_ANDROID_BOOT_IMAGE
        if (strncasecmp(cmd, "zimage", 6) == 0) {
-               fb_mmc_update_zimage(dev_desc, download_buffer, download_bytes);
+               fb_mmc_update_zimage(dev_desc, download_buffer,
+                                    download_bytes, response);
                return;
        }
 #endif
 
        if (part_get_info_by_name_or_alias(dev_desc, cmd, &info) < 0) {
                pr_err("cannot find partition: '%s'\n", cmd);
-               fastboot_fail("cannot find partition");
+               fastboot_fail("cannot find partition", response);
                return;
        }
 
@@ -344,16 +352,17 @@ void fb_mmc_flash_write(const char *cmd, void 
*download_buffer,
                       sparse.start);
 
                sparse.priv = &sparse_priv;
-               err = write_sparse_image(&sparse, cmd, download_buffer);
+               err = write_sparse_image(&sparse, cmd, download_buffer,
+                                        response);
                if (!err)
-                       fastboot_okay("");
+                       fastboot_okay(NULL, response);
        } else {
                write_raw_image(dev_desc, &info, cmd, download_buffer,
-                               download_bytes);
+                               download_bytes, response);
        }
 }
 
-void fb_mmc_erase(const char *cmd)
+void fb_mmc_erase(const char *cmd, char *response)
 {
        int ret;
        struct blk_desc *dev_desc;
@@ -363,21 +372,21 @@ void fb_mmc_erase(const char *cmd)
 
        if (mmc == NULL) {
                pr_err("invalid mmc device");
-               fastboot_fail("invalid mmc device");
+               fastboot_fail("invalid mmc device", response);
                return;
        }
 
        dev_desc = blk_get_dev("mmc", CONFIG_FASTBOOT_FLASH_MMC_DEV);
        if (!dev_desc || dev_desc->type == DEV_TYPE_UNKNOWN) {
                pr_err("invalid mmc device");
-               fastboot_fail("invalid mmc device");
+               fastboot_fail("invalid mmc device", response);
                return;
        }
 
        ret = part_get_info_by_name_or_alias(dev_desc, cmd, &info);
        if (ret < 0) {
                pr_err("cannot find partition: '%s'", cmd);
-               fastboot_fail("cannot find partition");
+               fastboot_fail("cannot find partition", response);
                return;
        }
 
@@ -396,11 +405,11 @@ void fb_mmc_erase(const char *cmd)
        blks = blk_derase(dev_desc, blks_start, blks_size);
        if (blks != blks_size) {
                pr_err("failed erasing from device %d", dev_desc->devnum);
-               fastboot_fail("failed erasing from device");
+               fastboot_fail("failed erasing from device", response);
                return;
        }
 
        printf("........ erased " LBAFU " bytes from '%s'\n",
               blks_size * info.blksz, cmd);
-       fastboot_okay("");
+       fastboot_okay(NULL, response);
 }
diff --git a/drivers/fastboot/fb_nand.c b/drivers/fastboot/fb_nand.c
index c07655e..2ee0d64 100644
--- a/drivers/fastboot/fb_nand.c
+++ b/drivers/fastboot/fb_nand.c
@@ -31,7 +31,8 @@ __weak int board_fastboot_write_partition_setup(char *name)
 
 static int fb_nand_lookup(const char *partname,
                          struct mtd_info **mtd,
-                         struct part_info **part)
+                         struct part_info **part,
+                         char *response)
 {
        struct mtd_device *dev;
        int ret;
@@ -40,21 +41,21 @@ static int fb_nand_lookup(const char *partname,
        ret = mtdparts_init();
        if (ret) {
                pr_err("Cannot initialize MTD partitions\n");
-               fastboot_fail("cannot init mtdparts");
+               fastboot_fail("cannot init mtdparts", response);
                return ret;
        }
 
        ret = find_dev_and_part(partname, &dev, &pnum, part);
        if (ret) {
                pr_err("cannot find partition: '%s'", partname);
-               fastboot_fail("cannot find partition");
+               fastboot_fail("cannot find partition", response);
                return ret;
        }
 
        if (dev->id->type != MTD_DEV_TYPE_NAND) {
                pr_err("partition '%s' is not stored on a NAND device",
                      partname);
-               fastboot_fail("not a NAND device");
+               fastboot_fail("not a NAND device", response);
                return -EINVAL;
        }
 
@@ -145,16 +146,16 @@ static lbaint_t fb_nand_sparse_reserve(struct 
sparse_storage *info,
 }
 
 void fb_nand_flash_write(const char *cmd, void *download_buffer,
-                        unsigned int download_bytes)
+                        unsigned int download_bytes, char *response)
 {
        struct part_info *part;
        struct mtd_info *mtd = NULL;
        int ret;
 
-       ret = fb_nand_lookup(cmd, &mtd, &part);
+       ret = fb_nand_lookup(cmd, &mtd, &part, response);
        if (ret) {
                pr_err("invalid NAND device");
-               fastboot_fail("invalid NAND device");
+               fastboot_fail("invalid NAND device", response);
                return;
        }
 
@@ -180,9 +181,10 @@ void fb_nand_flash_write(const char *cmd, void 
*download_buffer,
                       sparse.start);
 
                sparse.priv = &sparse_priv;
-               ret = write_sparse_image(&sparse, cmd, download_buffer);
+               ret = write_sparse_image(&sparse, cmd, download_buffer,
+                                        response);
                if (!ret)
-                       fastboot_okay("");
+                       fastboot_okay(NULL, response);
        } else {
                printf("Flashing raw image at offset 0x%llx\n",
                       part->offset);
@@ -195,23 +197,23 @@ void fb_nand_flash_write(const char *cmd, void 
*download_buffer,
        }
 
        if (ret) {
-               fastboot_fail("error writing the image");
+               fastboot_fail("error writing the image", response);
                return;
        }
 
-       fastboot_okay("");
+       fastboot_okay(NULL, response);
 }
 
-void fb_nand_erase(const char *cmd)
+void fb_nand_erase(const char *cmd, char *response)
 {
        struct part_info *part;
        struct mtd_info *mtd = NULL;
        int ret;
 
-       ret = fb_nand_lookup(cmd, &mtd, &part);
+       ret = fb_nand_lookup(cmd, &mtd, &part, response);
        if (ret) {
                pr_err("invalid NAND device");
-               fastboot_fail("invalid NAND device");
+               fastboot_fail("invalid NAND device", response);
                return;
        }
 
@@ -222,9 +224,9 @@ void fb_nand_erase(const char *cmd)
        ret = _fb_nand_erase(mtd, part);
        if (ret) {
                pr_err("failed erasing from device %s", mtd->name);
-               fastboot_fail("failed erasing from device");
+               fastboot_fail("failed erasing from device", response);
                return;
        }
 
-       fastboot_okay("");
+       fastboot_okay(NULL, response);
 }
diff --git a/drivers/usb/gadget/f_fastboot.c b/drivers/usb/gadget/f_fastboot.c
index 3acadae..bb60612 100644
--- a/drivers/usb/gadget/f_fastboot.c
+++ b/drivers/usb/gadget/f_fastboot.c
@@ -150,18 +150,16 @@ static void rx_handler_command(struct usb_ep *ep, struct 
usb_request *req);
 static int strcmp_l1(const char *s1, const char *s2);
 
 
-static char *fb_response_str;
-
-void fastboot_fail(const char *reason)
+void fastboot_fail(const char *reason, char *response)
 {
-       strncpy(fb_response_str, "FAIL\0", 5);
-       strncat(fb_response_str, reason, FASTBOOT_RESPONSE_LEN - 4 - 1);
+       strncpy(response, "FAIL\0", 5);
+       strncat(response, reason, FASTBOOT_RESPONSE_LEN - 4 - 1);
 }
 
-void fastboot_okay(const char *reason)
+void fastboot_okay(const char *reason, char *response)
 {
-       strncpy(fb_response_str, "OKAY\0", 5);
-       strncat(fb_response_str, reason, FASTBOOT_RESPONSE_LEN - 4 - 1);
+       strncpy(response, "OKAY\0", 5);
+       strncat(response, reason, FASTBOOT_RESPONSE_LEN - 4 - 1);
 }
 
 static void fastboot_complete(struct usb_ep *ep, struct usb_request *req)
@@ -597,18 +595,14 @@ static void cb_flash(struct usb_ep *ep, struct 
usb_request *req)
                return;
        }
 
-       /* initialize the response buffer */
-       fb_response_str = response;
-
-       fastboot_fail("no flash device defined");
+       fastboot_fail("no flash device defined", response);
 #ifdef CONFIG_FASTBOOT_FLASH_MMC_DEV
        fb_mmc_flash_write(cmd, (void *)CONFIG_FASTBOOT_BUF_ADDR,
-                          download_bytes);
+                          download_bytes, response);
 #endif
 #ifdef CONFIG_FASTBOOT_FLASH_NAND_DEV
-       fb_nand_flash_write(cmd,
-                           (void *)CONFIG_FASTBOOT_BUF_ADDR,
-                           download_bytes);
+       fb_nand_flash_write(cmd, (void *)CONFIG_FASTBOOT_BUF_ADDR,
+                           download_bytes, response);
 #endif
        fastboot_tx_write_str(response);
 }
@@ -649,15 +643,12 @@ static void cb_erase(struct usb_ep *ep, struct 
usb_request *req)
                return;
        }
 
-       /* initialize the response buffer */
-       fb_response_str = response;
-
-       fastboot_fail("no flash device defined");
+       fastboot_fail("no flash device defined", response);
 #ifdef CONFIG_FASTBOOT_FLASH_MMC_DEV
-       fb_mmc_erase(cmd);
+       fb_mmc_erase(cmd, response);
 #endif
 #ifdef CONFIG_FASTBOOT_FLASH_NAND_DEV
-       fb_nand_erase(cmd);
+       fb_nand_erase(cmd, response);
 #endif
        fastboot_tx_write_str(response);
 }
diff --git a/include/fastboot.h b/include/fastboot.h
index 009f1a7..ed52dae 100644
--- a/include/fastboot.h
+++ b/include/fastboot.h
@@ -15,7 +15,7 @@
 /* The 64 defined bytes plus \0 */
 #define FASTBOOT_RESPONSE_LEN  (64 + 1)
 
-void fastboot_fail(const char *reason);
-void fastboot_okay(const char *reason);
+void fastboot_fail(const char *reason, char *response);
+void fastboot_okay(const char *reason, char *response);
 
 #endif /* _FASTBOOT_H_ */
diff --git a/include/fb_mmc.h b/include/fb_mmc.h
index a2d7c48..39a960c 100644
--- a/include/fb_mmc.h
+++ b/include/fb_mmc.h
@@ -4,5 +4,5 @@
  */
 
 void fb_mmc_flash_write(const char *cmd, void *download_buffer,
-                       unsigned int download_bytes);
-void fb_mmc_erase(const char *cmd);
+                       unsigned int download_bytes, char *response);
+void fb_mmc_erase(const char *cmd, char *response);
diff --git a/include/fb_nand.h b/include/fb_nand.h
index 3daae8c..2c92a4e 100644
--- a/include/fb_nand.h
+++ b/include/fb_nand.h
@@ -5,5 +5,5 @@
  */
 
 void fb_nand_flash_write(const char *cmd, void *download_buffer,
-                        unsigned int download_bytes);
-void fb_nand_erase(const char *cmd);
+                        unsigned int download_bytes, char *response);
+void fb_nand_erase(const char *cmd, char *response);
diff --git a/include/image-sparse.h b/include/image-sparse.h
index f39dc16..234c237 100644
--- a/include/image-sparse.h
+++ b/include/image-sparse.h
@@ -23,7 +23,7 @@ struct sparse_storage {
                                 lbaint_t blk,
                                 lbaint_t blkcnt);
 
-       void            (*mssg)(const char *str);
+       void            (*mssg)(const char *str, char *response);
 };
 
 static inline int is_sparse_image(void *buf)
@@ -38,4 +38,4 @@ static inline int is_sparse_image(void *buf)
 }
 
 int write_sparse_image(struct sparse_storage *info, const char *part_name,
-                      void *data);
+                      void *data, char *response);
-- 
2.7.4

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