diff options
| author | Prabhakar Kushwaha <pkushwaha@marvell.com> | 2020-01-25 06:37:29 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-02-28 19:22:28 +0300 |
| commit | 9724b3f28dabf0644018fcea3f2a46fedcb3d6b1 (patch) | |
| tree | 299942726812b90ed2b895462cd2c5363ee2eda6 /include | |
| parent | 8eb92c122840227cce98d301f77f2ba4d3810264 (diff) | |
| download | linux-9724b3f28dabf0644018fcea3f2a46fedcb3d6b1.tar.xz | |
ata: ahci: Add shutdown to freeze hardware resources of ahci
commit 10a663a1b15134a5a714aa515e11425a44d4fdf7 upstream.
device_shutdown() called from reboot or power_shutdown expect
all devices to be shutdown. Same is true for even ahci pci driver.
As no ahci shutdown function is implemented, the ata subsystem
always remains alive with DMA & interrupt support. File system
related calls should not be honored after device_shutdown().
So defining ahci pci driver shutdown to freeze hardware (mask
interrupt, stop DMA engine and free DMA resources).
Signed-off-by: Prabhakar Kushwaha <pkushwaha@marvell.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/libata.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/libata.h b/include/linux/libata.h index fa0c3dae2094..c44e4cfbcb16 100644 --- a/include/linux/libata.h +++ b/include/linux/libata.h @@ -1220,6 +1220,7 @@ struct pci_bits { }; extern int pci_test_config_bits(struct pci_dev *pdev, const struct pci_bits *bits); +extern void ata_pci_shutdown_one(struct pci_dev *pdev); extern void ata_pci_remove_one(struct pci_dev *pdev); #ifdef CONFIG_PM |