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| author | Jisheng Zhang <[email protected]> | 2018-09-20 21:32:52 +0000 |
|---|---|---|
| committer | Bjorn Helgaas <[email protected]> | 2018-09-20 21:36:20 +0000 |
| commit | 9024143e700f89d74b8cdaf316a3499d74fc56fe (patch) | |
| tree | 21b380d0e4f4b0088a076d0c40be1fe975531ab0 /drivers/scsi/mpt3sas/mpi/mpi2_raid.h | |
| parent | MAINTAINERS: Move mobiveil PCI driver entry where it belongs (diff) | |
| download | kernel-9024143e700f89d74b8cdaf316a3499d74fc56fe.tar.gz kernel-9024143e700f89d74b8cdaf316a3499d74fc56fe.zip | |
PCI: dwc: Fix scheduling while atomic issues
When programming the inbound/outbound ATUs, we call usleep_range() after
each checking PCIE_ATU_ENABLE bit. Unfortunately, the ATU programming
can be executed in atomic context:
inbound ATU programming could be called through
pci_epc_write_header()
=>dw_pcie_ep_write_header()
=>dw_pcie_prog_inbound_atu()
outbound ATU programming could be called through
pci_bus_read_config_dword()
=>dw_pcie_rd_conf()
=>dw_pcie_prog_outbound_atu()
Fix this issue by calling mdelay() instead.
Fixes: f8aed6ec624f ("PCI: dwc: designware: Add EP mode support")
Fixes: d8bbeb39fbf3 ("PCI: designware: Wait for iATU enable")
Signed-off-by: Jisheng Zhang <[email protected]>
[[email protected]: commit log update]
Signed-off-by: Lorenzo Pieralisi <[email protected]>
Signed-off-by: Bjorn Helgaas <[email protected]>
Acked-by: Gustavo Pimentel <[email protected]>
Diffstat (limited to 'drivers/scsi/mpt3sas/mpi/mpi2_raid.h')
0 files changed, 0 insertions, 0 deletions