diff options
| author |   Prabhakar Kushwaha <pkushwaha@marvell.com> | 2020-01-25 03:37:29 +0000 |
|---|---|---|
| committer |   Jens Axboe <axboe@kernel.dk> | 2020-01-29 21:02:15 -0700 |
| commit | 10a663a1b15134a5a714aa515e11425a44d4fdf7 (patch) | |
| tree | 77316510d102f161fc28e2cb08732744ffb9262f /include | |
| parent | pata_pcmia: add SanDisk High (>8G) CF card to supported list (diff) | |
| download | linux-dev-10a663a1b15134a5a714aa515e11425a44d4fdf7.tar.xz linux-dev-10a663a1b15134a5a714aa515e11425a44d4fdf7.zip | |
ata: ahci: Add shutdown to freeze hardware resources of ahci
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>
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 2dbde119721d..bff539918d82 100644 --- a/include/linux/libata.h +++ b/include/linux/libata.h @@ -1221,6 +1221,7 @@ 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 |