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authorGavin Shan <gwshan@linux.vnet.ibm.com>2016-04-27 04:14:50 +0300
committerMichael Ellerman <mpe@ellerman.id.au>2016-05-12 12:52:20 +0300
commitaffeb0f2d3a9af419ad7ef4ac782e1540b2f7b28 (patch)
tree6581b0dd725d8fed77ab0eb5add17c23e5a1a8ba /arch/powerpc
parent848912e547c4569445a61203a7df402646a88c25 (diff)
downloadlinux-affeb0f2d3a9af419ad7ef4ac782e1540b2f7b28.tar.xz
powerpc/eeh: Don't report error in eeh_pe_reset_and_recover()
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") Cc: stable@vger.kernel.org #v3.18+ 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>
Diffstat (limited to 'arch/powerpc')
-rw-r--r--arch/powerpc/kernel/eeh_driver.c3
1 files changed, 0 insertions, 3 deletions
diff --git a/arch/powerpc/kernel/eeh_driver.c b/arch/powerpc/kernel/eeh_driver.c
index 618d13c26792..fe1dc638232b 100644
--- a/arch/powerpc/kernel/eeh_driver.c
+++ b/arch/powerpc/kernel/eeh_driver.c
@@ -564,9 +564,6 @@ int eeh_pe_reset_and_recover(struct eeh_pe *pe)
/* Save states */
eeh_pe_dev_traverse(pe, eeh_dev_save_state, NULL);
- /* Report error */
- eeh_pe_dev_traverse(pe, eeh_report_error, &result);
-
/* Issue reset */
ret = eeh_reset_pe(pe);
if (ret) {