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| author | Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com> | 2019-09-03 14:34:51 +0200 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2019-09-25 00:32:59 +0200 |
| commit | 4111cdef0e871c0f7c8874b19ee68a3671f7d63e (patch) | |
| tree | 741bbfa3367f255495dce3ccf1d656bc9d9e64db /arch | |
| parent | selftests/powerpc: Add test case for tlbie vs mtpidr ordering issue (diff) | |
| download | linux-4111cdef0e871c0f7c8874b19ee68a3671f7d63e.tar.xz linux-4111cdef0e871c0f7c8874b19ee68a3671f7d63e.zip | |
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 <aneesh.kumar@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20190903123452.28620-1-aneesh.kumar@linux.ibm.com
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/powerpc/platforms/pseries/papr_scm.c | 26 |
1 files 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; |