>
> At present, I just add command history print and
> you can add various vendor regions.
>
> Signed-off-by: Kiwoong Kim <kwmad.kim@xxxxxxxxxxx>
> ---
> drivers/scsi/ufs/ufs-exynos.c | 24 ++++++++++++++++++++++++
> 1 file changed, 24 insertions(+)
>
> diff --git a/drivers/scsi/ufs/ufs-exynos.c b/drivers/scsi/ufs/ufs-exynos.c
> index 8c60f7d..815c361 100644
> --- a/drivers/scsi/ufs/ufs-exynos.c
> +++ b/drivers/scsi/ufs/ufs-exynos.c
> @@ -1246,6 +1246,29 @@ static int exynos_ufs_resume(struct ufs_hba *hba,
> enum ufs_pm_op pm_op)
> return 0;
> }
>
> +static void exynos_ufs_dbg_register_dump(struct ufs_hba *hba)
> +{
> + struct exynos_ufs *ufs = ufshcd_get_variant(hba);
> + unsigned long flags;
> +
> + spin_lock_irqsave(&ufs->dbg_lock, flags);
> + if (ufs->under_dump == 0)
If you would use test_and_set_bit it would save you both under_dump and dbg_lock ?
> + ufs->under_dump = 1;
> + else {
> + spin_unlock_irqrestore(&ufs->dbg_lock, flags);
> + goto out;
> + }
> + spin_unlock_irqrestore(&ufs->dbg_lock, flags);
> +
> + exynos_ufs_dump_info(&ufs->handle, hba->dev);
> +
> + spin_lock_irqsave(&ufs->dbg_lock, flags);
> + ufs->under_dump = 0;
> + spin_unlock_irqrestore(&ufs->dbg_lock, flags);
> +out:
> + return;
> +}
> +
> static struct ufs_hba_variant_ops ufs_hba_exynos_ops = {
> .name = "exynos_ufs",
> .init = exynos_ufs_init,
> @@ -1258,6 +1281,7 @@ static struct ufs_hba_variant_ops
> ufs_hba_exynos_ops = {
> .hibern8_notify = exynos_ufs_hibern8_notify,
> .suspend = exynos_ufs_suspend,
> .resume = exynos_ufs_resume,
> + .dbg_register_dump = exynos_ufs_dbg_register_dump,
> };
>
> static int exynos_ufs_probe(struct platform_device *pdev)
> --
> 2.7.4
