diff options
author | Ahmed S. Darwish <a.darwish@linutronix.de> | 2021-01-18 13:09:47 +0300 |
---|---|---|
committer | Martin K. Petersen <martin.petersen@oracle.com> | 2021-01-23 05:31:08 +0300 |
commit | 26c7efc3f95260fd90e6cb268b47a58cf27ffc64 (patch) | |
tree | 094abdaef80a85a327243f017e4fc89504a46279 /drivers/scsi/hisi_sas/hisi_sas_v1_hw.c | |
parent | 111d06ab77c9f45fc4b8fc8be918b45154dafd44 (diff) | |
download | linux-26c7efc3f95260fd90e6cb268b47a58cf27ffc64.tar.xz |
scsi: hisi_sas: Pass gfp_t flags to libsas event notifiers
Use the new libsas event notifiers API, which requires callers to
explicitly pass the gfp_t memory allocation flags.
Below are the context analysis for modified functions:
=> hisi_sas_bytes_dmaed():
Since it is invoked from both process and atomic contexts, let its callers
pass the gfp_t flags:
* hisi_sas_main.c:
------------------
hisi_sas_phyup_work(): workqueue context
-> hisi_sas_bytes_dmaed(..., GFP_KERNEL)
hisi_sas_controller_reset_done(): has an msleep()
-> hisi_sas_rescan_topology()
-> hisi_sas_phy_down()
-> hisi_sas_bytes_dmaed(..., GFP_KERNEL)
hisi_sas_debug_I_T_nexus_reset(): calls wait_for_completion_timeout()
-> hisi_sas_phy_down()
-> hisi_sas_bytes_dmaed(..., GFP_KERNEL)
* hisi_sas_v1_hw.c:
-------------------
int_abnormal_v1_hw(): irq handler
-> hisi_sas_phy_down()
-> hisi_sas_bytes_dmaed(..., GFP_ATOMIC)
* hisi_sas_v[23]_hw.c:
----------------------
int_phy_updown_v[23]_hw(): irq handler
-> phy_down_v[23]_hw()
-> hisi_sas_phy_down()
-> hisi_sas_bytes_dmaed(..., GFP_ATOMIC)
=> int_bcast_v1_hw() and phy_bcast_v3_hw():
Both are invoked exclusively from irq handlers. Pass GFP_ATOMIC.
Link: https://lore.kernel.org/r/20210118100955.1761652-12-a.darwish@linutronix.de
Reviewed-by: John Garry <john.garry@huawei.com>
Signed-off-by: Ahmed S. Darwish <a.darwish@linutronix.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/hisi_sas/hisi_sas_v1_hw.c')
-rw-r--r-- | drivers/scsi/hisi_sas/hisi_sas_v1_hw.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/scsi/hisi_sas/hisi_sas_v1_hw.c b/drivers/scsi/hisi_sas/hisi_sas_v1_hw.c index 22eecc89d41b..2e660c0476f1 100644 --- a/drivers/scsi/hisi_sas/hisi_sas_v1_hw.c +++ b/drivers/scsi/hisi_sas/hisi_sas_v1_hw.c @@ -1423,7 +1423,8 @@ static irqreturn_t int_bcast_v1_hw(int irq, void *p) } if (!test_bit(HISI_SAS_RESET_BIT, &hisi_hba->flags)) - sas_notify_port_event(sas_phy, PORTE_BROADCAST_RCVD); + sas_notify_port_event_gfp(sas_phy, PORTE_BROADCAST_RCVD, + GFP_ATOMIC); end: hisi_sas_phy_write32(hisi_hba, phy_no, CHL_INT2, @@ -1452,7 +1453,8 @@ static irqreturn_t int_abnormal_v1_hw(int irq, void *p) u32 phy_state = hisi_sas_read32(hisi_hba, PHY_STATE); hisi_sas_phy_down(hisi_hba, phy_no, - (phy_state & 1 << phy_no) ? 1 : 0); + (phy_state & 1 << phy_no) ? 1 : 0, + GFP_ATOMIC); } if (irq_value & CHL_INT0_ID_TIMEOUT_MSK) |