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| author | Niklas Cassel <cassel@kernel.org> | 2025-08-14 20:32:18 +0300 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2025-08-19 05:08:30 +0300 |
| commit | e5eb72c92eb724aa14c50c7d92d1a576dd50d7e6 (patch) | |
| tree | 124feabad950c724972a11ca5d2f3b0867cad2f1 /include | |
| parent | 251be2f6037fb7ab399f68cd7428ff274133d693 (diff) | |
| download | linux-e5eb72c92eb724aa14c50c7d92d1a576dd50d7e6.tar.xz | |
scsi: libsas: Add dev_parent_is_expander() helper
Many libsas drivers check if the parent of the device is an expander.
Create a helper that the libsas drivers will use in follow up commits.
Suggested-by: Damien Le Moal <dlemoal@kernel.org>
Signed-off-by: Niklas Cassel <cassel@kernel.org>
Link: https://lore.kernel.org/r/20250814173215.1765055-15-cassel@kernel.org
Reviewed-by: Damien Le Moal <dlemoal@kernel.org>
Reviewed-by: John Garry <john.g.garry@oracle.com>
Reviewed-by: Jason Yan <yanaijie@huawei.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/scsi/libsas.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/include/scsi/libsas.h b/include/scsi/libsas.h index ba460b6c0374..8d38565e99fa 100644 --- a/include/scsi/libsas.h +++ b/include/scsi/libsas.h @@ -203,6 +203,14 @@ static inline bool dev_is_expander(enum sas_device_type type) type == SAS_FANOUT_EXPANDER_DEVICE; } +static inline bool dev_parent_is_expander(struct domain_device *dev) +{ + if (!dev->parent) + return false; + + return dev_is_expander(dev->parent->dev_type); +} + static inline void INIT_SAS_WORK(struct sas_work *sw, void (*fn)(struct work_struct *)) { INIT_WORK(&sw->work, fn); |