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ata: libata-core: Detach a port devices on shutdown

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Modify ata_pci_shutdown_one() to schedule EH to unload a port devices
before freezing and thawing the port. This ensures that drives are
cleanly disabled and transitioned to standby power mode when
a PCI adapter is removed or the system is powered off.

Signed-off-by: Damien Le Moal <dlemoal@kernel.org>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Tested-by: Chia-Lin Kao (AceLan) <acelan.kao@canonical.com>
Tested-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Damien Le Moal 2023-08-28 16:01:58 +09:00
parent cfead0dd81
commit 5b6fba546d
1 changed files with 15 additions and 1 deletions
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16
drivers/ata/libata-core.c
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@ -6164,10 +6164,24 @@ EXPORT_SYMBOL_GPL(ata_pci_remove_one);
void ata_pci_shutdown_one(struct pci_dev *pdev)
{
struct ata_host *host = pci_get_drvdata(pdev);
struct ata_port *ap;
unsigned long flags;
int i;
/* Tell EH to disable all devices */
for (i = 0; i < host->n_ports; i++) {
struct ata_port *ap = host->ports[i];
ap = host->ports[i];
spin_lock_irqsave(ap->lock, flags);
ap->pflags |= ATA_PFLAG_UNLOADING;
ata_port_schedule_eh(ap);
spin_unlock_irqrestore(ap->lock, flags);
}
for (i = 0; i < host->n_ports; i++) {
ap = host->ports[i];
/* Wait for EH to complete before freezing the port */
ata_port_wait_eh(ap);
ap->pflags |= ATA_PFLAG_FROZEN;