If a device is hot unplgged during EEH recovery, it's possible for the RTAS call to ibm,configure-pe in pseries_eeh_configure() to return parameter error (-3), however negative return values are not checked for and this leads to an infinite loop.
Fix this by correctly bailing out on negative values. Signed-off-by: Sam Bobroff <sbobr...@linux.ibm.com> --- v4 - Just handle the error translation locally, as it's specific to the RTAS call, but log the unaltered code in case it's useful for debugging. arch/powerpc/platforms/pseries/eeh_pseries.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/arch/powerpc/platforms/pseries/eeh_pseries.c b/arch/powerpc/platforms/pseries/eeh_pseries.c index 893ba3f562c4..04c1ed79bc6e 100644 --- a/arch/powerpc/platforms/pseries/eeh_pseries.c +++ b/arch/powerpc/platforms/pseries/eeh_pseries.c @@ -607,6 +607,8 @@ static int pseries_eeh_configure_bridge(struct eeh_pe *pe) if (!ret) return ret; + if (ret < 0) + break; /* * If RTAS returns a delay value that's above 100ms, cut it @@ -627,7 +629,11 @@ static int pseries_eeh_configure_bridge(struct eeh_pe *pe) pr_warn("%s: Unable to configure bridge PHB#%x-PE#%x (%d)\n", __func__, pe->phb->global_number, pe->addr, ret); - return ret; + /* PAPR defines -3 as "Parameter Error" for this function: */ + if (ret == -3) + return -EINVAL; + else + return -EIO; } /** -- 2.22.0.216.g00a2a96fc9