[PATCH v1 3/5] cmd: nvme: Add flush support

[Neil Armstrong]

On 5/28/26 03:20, dmukhin at ford.com wrote:
> From: Denis Mukhin <dmukhin at ford.com>
> 
> Introduce `nvme flush` to allow users to commit all dirty data explicitly
> to the current NVMe device.

This adds flush for all blk devices, please rewrite
the commit subject, message and update all blk commands
and not only nvme.

> 
> Signed-off-by: Denis Mukhin <dmukhin at ford.com>
> ---
>   cmd/blk_common.c | 14 ++++++++++++++
>   cmd/nvme.c       |  1 +
>   2 files changed, 15 insertions(+)
> 
> diff --git a/cmd/blk_common.c b/cmd/blk_common.c
> index 56529702a470..d3b00e10f17c 100644
> --- a/cmd/blk_common.c
> +++ b/cmd/blk_common.c
> @@ -37,6 +37,20 @@ int blk_common_cmd(int argc, char *const argv[], enum uclass_id uclass_id,
>   				printf("\nno %s partition table available\n",
>   				       if_name);
>   			return CMD_RET_SUCCESS;
> +		} else if (strncmp(argv[1], "flush", 5) == 0) {
> +			struct blk_desc *desc;
> +			int ret;
> +
> +			ret = blk_get_desc(uclass_id, *cur_devnump, &desc);
> +			if (ret)
> +				return CMD_RET_FAILURE;
> +
> +			if (blk_dflush(desc)) {
> +				printf("\nfailed to flush device %s\n", if_name);
> +				return CMD_RET_FAILURE;
> +			}
> +
> +			return CMD_RET_SUCCESS;
>   		}
>   		return CMD_RET_USAGE;
>   	case 3:
> diff --git a/cmd/nvme.c b/cmd/nvme.c
> index f2c9acba5c32..21ac9a6fac7a 100644
> --- a/cmd/nvme.c
> +++ b/cmd/nvme.c
> @@ -46,6 +46,7 @@ U_BOOT_CMD(
>   	"NVM Express sub-system",
>   	"scan - scan NVMe devices\n"
>   	"nvme detail - show details of current NVMe device\n"
> +	"nvme flush - commit all dirty data to the current NVMe device\n"
>   	"nvme info - show all available NVMe devices\n"
>   	"nvme device [dev] - show or set current NVMe device\n"
>   	"nvme part [dev] - print partition table of one or all NVMe devices\n"