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ata: ahci_platform: Add shutdown handler

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The newly introduced ahci_platform_shutdown() method is called during
system shutdown to disable host controller DMA and interrupts in order
to avoid potentially corrupting or otherwise interfering with a new
kernel being started with kexec.

Signed-off-by: Nate Watterson <nwatters@codeaurora.org>
Signed-off-by: Tejun Heo <tj@kernel.org>
This commit is contained in:
Nate Watterson
2017-07-20 15:26:24 -04:00
committed by Tejun Heo
parent afbd39a42e
commit 8eede5bc4e
3 changed files with 37 additions and 0 deletions
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2
include/linux/ahci_platform.h
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@@ -36,6 +36,8 @@ int ahci_platform_init_host(struct platform_device *pdev,
const struct ata_port_info *pi_template,
struct scsi_host_template *sht);
void ahci_platform_shutdown(struct platform_device *pdev);
int ahci_platform_suspend_host(struct device *dev);
int ahci_platform_resume_host(struct device *dev);
int ahci_platform_suspend(struct device *dev);