From 4111cdef0e871c0f7c8874b19ee68a3671f7d63e Mon Sep 17 00:00:00 2001 From: "Aneesh Kumar K.V" Date: Tue, 3 Sep 2019 18:04:51 +0530 Subject: [PATCH] powerpc/nvdimm: Use HCALL error as the return value This simplifies the error handling and also enable us to switch to H_SCM_QUERY hcall in a later patch on H_OVERLAP error. We also do some kernel print formatting fixup in this patch. Signed-off-by: Aneesh Kumar K.V Signed-off-by: Michael Ellerman Link: https://lore.kernel.org/r/20190903123452.28620-1-aneesh.kumar@linux.ibm.com --- arch/powerpc/platforms/pseries/papr_scm.c | 26 ++++++++++------------- 1 file changed, 11 insertions(+), 15 deletions(-) diff --git a/arch/powerpc/platforms/pseries/papr_scm.c b/arch/powerpc/platforms/pseries/papr_scm.c index a5ac371a3f06..3bef4d298ac6 100644 --- a/arch/powerpc/platforms/pseries/papr_scm.c +++ b/arch/powerpc/platforms/pseries/papr_scm.c @@ -66,28 +66,22 @@ static int drc_pmem_bind(struct papr_scm_priv *p) } while (rc == H_BUSY); if (rc) { - /* H_OVERLAP needs a separate error path */ - if (rc == H_OVERLAP) - return -EBUSY; - dev_err(&p->pdev->dev, "bind err: %lld\n", rc); - return -ENXIO; + return rc; } p->bound_addr = saved; - - dev_dbg(&p->pdev->dev, "bound drc %x to %pR\n", p->drc_index, &p->res); - - return 0; + dev_dbg(&p->pdev->dev, "bound drc 0x%x to %pR\n", p->drc_index, &p->res); + return rc; } -static int drc_pmem_unbind(struct papr_scm_priv *p) +static void drc_pmem_unbind(struct papr_scm_priv *p) { unsigned long ret[PLPAR_HCALL_BUFSIZE]; uint64_t token = 0; int64_t rc; - dev_dbg(&p->pdev->dev, "unbind drc %x\n", p->drc_index); + dev_dbg(&p->pdev->dev, "unbind drc 0x%x\n", p->drc_index); /* NB: unbind has the same retry requirements as drc_pmem_bind() */ do { @@ -110,10 +104,10 @@ static int drc_pmem_unbind(struct papr_scm_priv *p) if (rc) dev_err(&p->pdev->dev, "unbind error: %lld\n", rc); else - dev_dbg(&p->pdev->dev, "unbind drc %x complete\n", + dev_dbg(&p->pdev->dev, "unbind drc 0x%x complete\n", p->drc_index); - return rc == H_SUCCESS ? 0 : -ENXIO; + return; } static int papr_scm_meta_get(struct papr_scm_priv *p, @@ -436,14 +430,16 @@ static int papr_scm_probe(struct platform_device *pdev) rc = drc_pmem_bind(p); /* If phyp says drc memory still bound then force unbound and retry */ - if (rc == -EBUSY) { + if (rc == H_OVERLAP) { dev_warn(&pdev->dev, "Retrying bind after unbinding\n"); drc_pmem_unbind(p); rc = drc_pmem_bind(p); } - if (rc) + if (rc != H_SUCCESS) { + rc = -ENXIO; goto err; + } /* setup the resource for the newly bound range */ p->res.start = p->bound_addr;