diff options
| author | Levente Kurusa <levex@linux.com> | 2014-05-06 15:57:48 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-06-07 13:25:39 -0700 |
| commit | a40aac07285bdf77ed67af1423676ff5548ef51b (patch) | |
| tree | 17e57527f99592b8c9432c9f7a83629aa18a4498 | |
| parent | 019c8ec9e3c6a3616f10be9eda359f1927d1f8b1 (diff) | |
libata: clean up ZPODD when a port is detached
commit a6f9bf4d2f965b862b95213303d154e02957eed8 upstream.
When a ZPODD device is unbound via sysfs, the ACPI notify handler
is not removed. This causes panics as observed in Bug #74601. The
panic only happens when the wake happens from outside the kernel
(i.e. inserting a media or pressing a button). Add a loop to
ata_port_detach which loops through the port's devices and checks
if zpodd is enabled, if so call zpodd_exit.
Reviewed-by: Aaron Lu <aaron.lu@intel.com>
Signed-off-by: Levente Kurusa <levex@linux.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/ata/libata-core.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c index 9cf616b5210b..bf00fbcde8ad 100644 --- a/drivers/ata/libata-core.c +++ b/drivers/ata/libata-core.c @@ -6300,6 +6300,8 @@ int ata_host_activate(struct ata_host *host, int irq, static void ata_port_detach(struct ata_port *ap) { unsigned long flags; + struct ata_link *link; + struct ata_device *dev; if (!ap->ops->error_handler) goto skip_eh; @@ -6319,6 +6321,13 @@ static void ata_port_detach(struct ata_port *ap) cancel_delayed_work_sync(&ap->hotplug_task); skip_eh: + /* clean up zpodd on port removal */ + ata_for_each_link(link, ap, HOST_FIRST) { + ata_for_each_dev(dev, link, ALL) { + if (zpodd_dev_enabled(dev)) + zpodd_exit(dev); + } + } if (ap->pmp_link) { int i; for (i = 0; i < SATA_PMP_MAX_PORTS; i++) |