At present we use HAVE_BLOCK_DEVICE to indicate when block devices are available.
This is a very strange option, since it partially duplicates the BLK option used by driver model. It also covers both U-Boot proper and SPL, even though one might have block devices and another not.
As a first step towards correcting this, create a new inline function called blk_enabled() which indicates if block devices are available. This cannot be used in Makefiles, or #if clauses, but can be used in C code.
A function is useful because we cannot use CONFIG_IS_ENABLED(BLK) to decide if block devices are needed, since we must consider the legacy block interface, enabled by HAVE_BLOCK_DEVICE
Update a few places where it can be used and drop some unnecessary #if checks around some functions in disk/part.c - rely on the compiler's dead-code elimination instead.
Signed-off-by: Simon Glass sjg@chromium.org ---
(no changes since v1)
disk/part.c | 80 ++++++++++++++++---------------------- drivers/block/blk-uclass.c | 3 +- fs/fat/fat.c | 2 +- include/blk.h | 5 +++ 4 files changed, 40 insertions(+), 50 deletions(-)
diff --git a/disk/part.c b/disk/part.c index 79955c7fb00..9594bb432c4 100644 --- a/disk/part.c +++ b/disk/part.c @@ -54,12 +54,13 @@ static struct part_driver *part_driver_lookup_type(struct blk_desc *dev_desc) return NULL; }
-#ifdef CONFIG_HAVE_BLOCK_DEVICE static struct blk_desc *get_dev_hwpart(const char *ifname, int dev, int hwpart) { struct blk_desc *dev_desc; int ret;
+ if (!blk_enabled()) + return NULL; dev_desc = blk_get_devnum_by_typename(ifname, dev); if (!dev_desc) { debug("%s: No device for iface '%s', dev %d\n", __func__, @@ -78,21 +79,11 @@ static struct blk_desc *get_dev_hwpart(const char *ifname, int dev, int hwpart)
struct blk_desc *blk_get_dev(const char *ifname, int dev) { - return get_dev_hwpart(ifname, dev, 0); -} -#else -struct blk_desc *get_dev_hwpart(const char *ifname, int dev, int hwpart) -{ - return NULL; -} + if (!blk_enabled()) + return NULL;
-struct blk_desc *blk_get_dev(const char *ifname, int dev) -{ - return NULL; + return get_dev_hwpart(ifname, dev, 0); } -#endif - -#ifdef CONFIG_HAVE_BLOCK_DEVICE
/* ------------------------------------------------------------------------- */ /* @@ -228,9 +219,6 @@ void dev_print (struct blk_desc *dev_desc) puts (" Capacity: not available\n"); } } -#endif - -#ifdef CONFIG_HAVE_BLOCK_DEVICE
void part_init(struct blk_desc *dev_desc) { @@ -325,38 +313,36 @@ void part_print(struct blk_desc *dev_desc) drv->print(dev_desc); }
-#endif /* CONFIG_HAVE_BLOCK_DEVICE */ - int part_get_info(struct blk_desc *dev_desc, int part, struct disk_partition *info) { -#ifdef CONFIG_HAVE_BLOCK_DEVICE struct part_driver *drv;
+ if (blk_enabled()) { #if CONFIG_IS_ENABLED(PARTITION_UUIDS) - /* The common case is no UUID support */ - info->uuid[0] = 0; + /* The common case is no UUID support */ + info->uuid[0] = 0; #endif #ifdef CONFIG_PARTITION_TYPE_GUID - info->type_guid[0] = 0; + info->type_guid[0] = 0; #endif
- drv = part_driver_lookup_type(dev_desc); - if (!drv) { - debug("## Unknown partition table type %x\n", - dev_desc->part_type); - return -EPROTONOSUPPORT; - } - if (!drv->get_info) { - PRINTF("## Driver %s does not have the get_info() method\n", - drv->name); - return -ENOSYS; - } - if (drv->get_info(dev_desc, part, info) == 0) { - PRINTF("## Valid %s partition found ##\n", drv->name); - return 0; + drv = part_driver_lookup_type(dev_desc); + if (!drv) { + debug("## Unknown partition table type %x\n", + dev_desc->part_type); + return -EPROTONOSUPPORT; + } + if (!drv->get_info) { + PRINTF("## Driver %s does not have the get_info() method\n", + drv->name); + return -ENOSYS; + } + if (drv->get_info(dev_desc, part, info) == 0) { + PRINTF("## Valid %s partition found ##\n", drv->name); + return 0; + } } -#endif /* CONFIG_HAVE_BLOCK_DEVICE */
return -ENOENT; } @@ -424,15 +410,15 @@ int blk_get_device_by_str(const char *ifname, const char *dev_hwpart_str, goto cleanup; }
-#ifdef CONFIG_HAVE_BLOCK_DEVICE - /* - * Updates the partition table for the specified hw partition. - * Always should be done, otherwise hw partition 0 will return stale - * data after displaying a non-zero hw partition. - */ - if ((*dev_desc)->if_type == IF_TYPE_MMC) - part_init(*dev_desc); -#endif + if (blk_enabled()) { + /* + * Updates the partition table for the specified hw partition. + * Always should be done, otherwise hw partition 0 will return + * stale data after displaying a non-zero hw partition. + */ + if ((*dev_desc)->if_type == IF_TYPE_MMC) + part_init(*dev_desc); + }
cleanup: free(dup_str); diff --git a/drivers/block/blk-uclass.c b/drivers/block/blk-uclass.c index 21c5209bb63..1a6e8f8c29d 100644 --- a/drivers/block/blk-uclass.c +++ b/drivers/block/blk-uclass.c @@ -743,8 +743,7 @@ int blk_unbind_all(int if_type)
static int blk_post_probe(struct udevice *dev) { - if (CONFIG_IS_ENABLED(PARTITIONS) && - IS_ENABLED(CONFIG_HAVE_BLOCK_DEVICE)) { + if (CONFIG_IS_ENABLED(PARTITIONS) && blk_enabled()) { struct blk_desc *desc = dev_get_uclass_plat(dev);
part_init(desc); diff --git a/fs/fat/fat.c b/fs/fat/fat.c index df9ea2c028f..c64e253abd4 100644 --- a/fs/fat/fat.c +++ b/fs/fat/fat.c @@ -1144,7 +1144,7 @@ int file_fat_detectfs(void) return 1; }
- if (IS_ENABLED(CONFIG_HAVE_BLOCK_DEVICE)) { + if (blk_enabled()) { printf("Interface: %s\n", blk_get_if_type_name(cur_dev->if_type)); printf(" Device %d: ", cur_dev->devnum); dev_print(cur_dev); diff --git a/include/blk.h b/include/blk.h index 9503369db83..332481a90b8 100644 --- a/include/blk.h +++ b/include/blk.h @@ -21,6 +21,11 @@ typedef ulong lbaint_t;
struct udevice;
+static inline bool blk_enabled(void) +{ + return CONFIG_IS_ENABLED(BLK) || IS_ENABLED(CONFIG_HAVE_BLOCK_DEVICE); +} + /* Interface types: */ enum if_type { IF_TYPE_UNKNOWN = 0,