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[ Upstream commit4ba9e51657] 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:4daf1ef3c6("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> Signed-off-by: Sasha Levin <sashal@kernel.org>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.