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powerpc/eeh: Don't report error in eeh_pe_reset_and_recover()

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commit affeb0f2d3 upstream.

The function eeh_pe_reset_and_recover() is used to recover EEH
error when the passthrough device are transferred to guest and
backwards, meaning the device's driver is vfio-pci or none.
When the driver is vfio-pci that provides error_detected() error
handler only, the handler simply stops the guest and it's not
expected behaviour. On the other hand, no error handlers will
be called if we don't have a bound driver.

This ignores the error handler in eeh_pe_reset_and_recover()
that reports the error to device driver to avoid the exceptional
behaviour.

Fixes: 5cfb20b9 ("powerpc/eeh: Emulate EEH recovery for VFIO devices")
Signed-off-by: Gavin Shan <gwshan@linux.vnet.ibm.com>
Reviewed-by: Russell Currey <ruscur@russell.cc>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Gavin Shan
2016-04-27 11:14:50 +10:00
committed by Greg Kroah-Hartman
parent b84c42fe6e
commit df508c17ff
1 changed files with 0 additions and 3 deletions
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3
arch/powerpc/kernel/eeh_driver.c
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@@ -504,9 +504,6 @@ int eeh_pe_reset_and_recover(struct eeh_pe *pe)
/* Save states */ /* Save states */
eeh_pe_dev_traverse(pe, eeh_dev_save_state, NULL); eeh_pe_dev_traverse(pe, eeh_dev_save_state, NULL);
/* Report error */
eeh_pe_dev_traverse(pe, eeh_report_error, &result);
/* Issue reset */ /* Issue reset */
ret = eeh_reset_pe(pe); ret = eeh_reset_pe(pe);
if (ret) { if (ret) {