From 5fe7702eccf1bae5b10f0309cef03e02bfdfa6ef Mon Sep 17 00:00:00 2001 From: Jean-Jacques Hiblot Date: Fri, 9 Jun 2017 16:45:18 +0200 Subject: [PATCH] blk: dm: make blk_create_device() take a number of block instead of a size There is an overflow problem when taking the size instead of the number of blocks in blk_create_device(). This results in a wrong device size: the device apparent size is its real size modulo 4GB. Using the number of blocks instead of the device size fixes the problem and is more coherent with the internals of the block layer. Signed-off-by: Jean-Jacques Hiblot Reviewed-by: Simon Glass --- drivers/block/blk-uclass.c | 8 ++++---- drivers/block/sandbox.c | 2 +- drivers/scsi/scsi.c | 2 +- include/blk.h | 8 ++++---- test/dm/blk.c | 6 +++--- 5 files changed, 13 insertions(+), 13 deletions(-) diff --git a/drivers/block/blk-uclass.c b/drivers/block/blk-uclass.c index 3c5a87b60a..aee2a50d62 100644 --- a/drivers/block/blk-uclass.c +++ b/drivers/block/blk-uclass.c @@ -546,7 +546,7 @@ static int blk_claim_devnum(enum if_type if_type, int devnum) int blk_create_device(struct udevice *parent, const char *drv_name, const char *name, int if_type, int devnum, int blksz, - lbaint_t size, struct udevice **devp) + lbaint_t lba, struct udevice **devp) { struct blk_desc *desc; struct udevice *dev; @@ -567,7 +567,7 @@ int blk_create_device(struct udevice *parent, const char *drv_name, desc = dev_get_uclass_platdata(dev); desc->if_type = if_type; desc->blksz = blksz; - desc->lba = size / blksz; + desc->lba = lba; desc->part_type = PART_TYPE_UNKNOWN; desc->bdev = dev; desc->devnum = devnum; @@ -578,7 +578,7 @@ int blk_create_device(struct udevice *parent, const char *drv_name, int blk_create_devicef(struct udevice *parent, const char *drv_name, const char *name, int if_type, int devnum, int blksz, - lbaint_t size, struct udevice **devp) + lbaint_t lba, struct udevice **devp) { char dev_name[30], *str; int ret; @@ -589,7 +589,7 @@ int blk_create_devicef(struct udevice *parent, const char *drv_name, return -ENOMEM; ret = blk_create_device(parent, drv_name, str, if_type, devnum, - blksz, size, devp); + blksz, lba, devp); if (ret) { free(str); return ret; diff --git a/drivers/block/sandbox.c b/drivers/block/sandbox.c index 34d1c638bc..98df6b33b6 100644 --- a/drivers/block/sandbox.c +++ b/drivers/block/sandbox.c @@ -129,7 +129,7 @@ int host_dev_bind(int devnum, char *filename) } ret = blk_create_device(gd->dm_root, "sandbox_host_blk", str, IF_TYPE_HOST, devnum, 512, - os_lseek(fd, 0, OS_SEEK_END), &dev); + os_lseek(fd, 0, OS_SEEK_END) / 512, &dev); if (ret) goto err_file; ret = device_probe(dev); diff --git a/drivers/scsi/scsi.c b/drivers/scsi/scsi.c index 1a65a3f9b9..df998921f5 100644 --- a/drivers/scsi/scsi.c +++ b/drivers/scsi/scsi.c @@ -580,7 +580,7 @@ static int do_scsi_scan_one(struct udevice *dev, int id, int lun, bool verbose) */ snprintf(str, sizeof(str), "id%dlun%d", id, lun); ret = blk_create_devicef(dev, "scsi_blk", str, IF_TYPE_SCSI, -1, - bd.blksz, bd.blksz * bd.lba, &bdev); + bd.blksz, bd.lba, &bdev); if (ret) { debug("Can't create device\n"); return ret; diff --git a/include/blk.h b/include/blk.h index 27abfddb94..1965812a9d 100644 --- a/include/blk.h +++ b/include/blk.h @@ -315,12 +315,12 @@ int blk_next_device(struct udevice **devp); * @devnum: Device number, specific to the interface type, or -1 to * allocate the next available number * @blksz: Block size of the device in bytes (typically 512) - * @size: Total size of the device in bytes + * @lba: Total number of blocks of the device * @devp: the new device (which has not been probed) */ int blk_create_device(struct udevice *parent, const char *drv_name, const char *name, int if_type, int devnum, int blksz, - lbaint_t size, struct udevice **devp); + lbaint_t lba, struct udevice **devp); /** * blk_create_devicef() - Create a new named block device @@ -332,12 +332,12 @@ int blk_create_device(struct udevice *parent, const char *drv_name, * @devnum: Device number, specific to the interface type, or -1 to * allocate the next available number * @blksz: Block size of the device in bytes (typically 512) - * @size: Total size of the device in bytes + * @lba: Total number of blocks of the device * @devp: the new device (which has not been probed) */ int blk_create_devicef(struct udevice *parent, const char *drv_name, const char *name, int if_type, int devnum, int blksz, - lbaint_t size, struct udevice **devp); + lbaint_t lba, struct udevice **devp); /** * blk_prepare_device() - Prepare a block device for use diff --git a/test/dm/blk.c b/test/dm/blk.c index 923e8d95f0..30d1e6184d 100644 --- a/test/dm/blk.c +++ b/test/dm/blk.c @@ -23,9 +23,9 @@ static int dm_test_blk_base(struct unit_test_state *uts) /* Create two, one the parent of the other */ ut_assertok(blk_create_device(gd->dm_root, "sandbox_host_blk", "test", - IF_TYPE_HOST, 1, 512, 1024, &blk)); + IF_TYPE_HOST, 1, 512, 2, &blk)); ut_assertok(blk_create_device(blk, "usb_storage_blk", "test", - IF_TYPE_USB, 3, 512, 1024, &usb_blk)); + IF_TYPE_USB, 3, 512, 2, &usb_blk)); /* Check we can find them */ ut_asserteq(-ENODEV, blk_get_device(IF_TYPE_HOST, 0, &dev)); @@ -101,7 +101,7 @@ static int dm_test_blk_find(struct unit_test_state *uts) struct udevice *blk, *dev; ut_assertok(blk_create_device(gd->dm_root, "sandbox_host_blk", "test", - IF_TYPE_HOST, 1, 512, 1024, &blk)); + IF_TYPE_HOST, 1, 512, 2, &blk)); ut_asserteq(-ENODEV, blk_find_device(IF_TYPE_HOST, 0, &dev)); ut_assertok(blk_find_device(IF_TYPE_HOST, 1, &dev)); ut_asserteq_ptr(blk, dev); -- 2.25.1