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blk: add a helper function, blk_probe_or_unbind()

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This function will be commonly used in block device drivers
in the succeeding patches.

Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
This commit is contained in:
AKASHI Takahiro 2021-12-10 15:49:29 +09:00 committed by Heinrich Schuchardt
parent 5d21dfec4a
commit 19b241c61f
2 changed files with 25 additions and 0 deletions
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13
drivers/block/blk-uclass.c
View file

@ -672,6 +672,19 @@ int blk_create_devicef(struct udevice *parent, const char *drv_name,
return 0;
}
int blk_probe_or_unbind(struct udevice *dev)
{
int ret;
ret = device_probe(dev);
if (ret) {
log_debug("probing %s failed\n", dev->name);
device_unbind(dev);
}
return ret;
}
int blk_unbind_all(int if_type)
{
struct uclass *uc;

12
include/blk.h
View file

@ -370,6 +370,18 @@ int blk_create_devicef(struct udevice *parent, const char *drv_name,
const char *name, int if_type, int devnum, int blksz,
lbaint_t lba, struct udevice **devp);
/**
* blk_probe_or_unbind() - Try to probe
*
* Try to probe the device, primarily for enumerating partitions.
* If it fails, the device itself is unbound since it means that it won't
* work any more.
*
* @dev: The device to probe
* Return: 0 if OK, -ve on error
*/
int blk_probe_or_unbind(struct udevice *dev);
/**
* blk_unbind_all() - Unbind all device of the given interface type
*