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authorAhmed S. Darwish <a.darwish@linutronix.de>2020-11-26 16:29:39 +0300
committerMartin K. Petersen <martin.petersen@oracle.com>2020-12-01 08:03:52 +0300
commit4ba9e516573e60c471c01bb369144651f6f8d50b (patch)
treeffda2a5a26e0cdef8a8fd1c3e4e7978297bd0c4c /drivers/scsi/pm8001
parent939785d35def8d10e8ad312b252dbbecc8d41ca1 (diff)
downloadlinux-4ba9e516573e60c471c01bb369144651f6f8d50b.tar.xz
scsi: pm80xx: Do not sleep in atomic context
hw_event_sas_phy_up() is used in hardirq/softirq context: pm8001_interrupt_handler_msix() || pm8001_interrupt_handler_intx() || pm8001_tasklet => PM8001_CHIP_DISP->isr() = pm80xx_chip_isr() => process_oq() [spin_lock_irqsave(&pm8001_ha->lock,)] => process_one_iomb() => mpi_hw_event() => hw_event_sas_phy_up() => msleep(200) Revert the msleep() back to an mdelay() to avoid sleeping in atomic context. Link: https://lore.kernel.org/r/20201126132952.2287996-2-bigeasy@linutronix.de Fixes: 4daf1ef3c681 ("scsi: pm80xx: Convert 'long' mdelay to msleep") Cc: Vikram Auradkar <auradkar@google.com> Cc: Jack Wang <jinpu.wang@cloud.ionos.com> Acked-by: Jack Wang <jinpu.wang@cloud.ionos.com> Signed-off-by: Ahmed S. Darwish <a.darwish@linutronix.de> Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/pm8001')
-rw-r--r--drivers/scsi/pm8001/pm80xx_hwi.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/scsi/pm8001/pm80xx_hwi.c b/drivers/scsi/pm8001/pm80xx_hwi.c
index 69f8244539e0..6772b0924dac 100644
--- a/drivers/scsi/pm8001/pm80xx_hwi.c
+++ b/drivers/scsi/pm8001/pm80xx_hwi.c
@@ -3296,7 +3296,7 @@ hw_event_sas_phy_up(struct pm8001_hba_info *pm8001_ha, void *piomb)
pm8001_get_attached_sas_addr(phy, phy->sas_phy.attached_sas_addr);
spin_unlock_irqrestore(&phy->sas_phy.frame_rcvd_lock, flags);
if (pm8001_ha->flags == PM8001F_RUN_TIME)
- msleep(200);/*delay a moment to wait disk to spinup*/
+ mdelay(200); /* delay a moment to wait for disk to spin up */
pm8001_bytes_dmaed(pm8001_ha, phy_id);
}