| Message ID | 20240907081836.5801-8-alejandro.lucero-palau@amd.com |
|---|---|
| State | New |
| Headers | show |
| Series | cxl: add Type2 device support | expand |
On Sat, 7 Sep 2024 09:18:23 +0100 <alejandro.lucero-palau@amd.com> wrote: > From: Alejandro Lucero <alucerop@amd.com> > > For a resource defined with size zero, resource_contains returns > always true. > > Add resource size check before using it. > > Signed-off-by: Alejandro Lucero <alucerop@amd.com> > --- > drivers/cxl/core/hdm.c | 5 +++-- > 1 file changed, 3 insertions(+), 2 deletions(-) > > diff --git a/drivers/cxl/core/hdm.c b/drivers/cxl/core/hdm.c > index 3df10517a327..953a5f86a43f 100644 > --- a/drivers/cxl/core/hdm.c > +++ b/drivers/cxl/core/hdm.c > @@ -327,10 +327,11 @@ static int __cxl_dpa_reserve(struct cxl_endpoint_decoder *cxled, > cxled->dpa_res = res; > cxled->skip = skipped; > > - if (resource_contains(&cxlds->pmem_res, res)) > + if ((resource_size(&cxlds->pmem_res)) && (resource_contains(&cxlds->pmem_res, res))) { Excess brackets + I'd break that over two lines. > cxled->mode = CXL_DECODER_PMEM; > - else if (resource_contains(&cxlds->ram_res, res)) > + } else if ((resource_size(&cxlds->ram_res)) && (resource_contains(&cxlds->ram_res, res))) { Same here, > cxled->mode = CXL_DECODER_RAM; > + } > else { > dev_warn(dev, "decoder%d.%d: %pr mixed mode not supported\n", > port->id, cxled->cxld.id, cxled->dpa_res);
On 9/13/24 18:36, Jonathan Cameron wrote: > On Sat, 7 Sep 2024 09:18:23 +0100 > <alejandro.lucero-palau@amd.com> wrote: > >> From: Alejandro Lucero <alucerop@amd.com> >> >> For a resource defined with size zero, resource_contains returns >> always true. >> >> Add resource size check before using it. >> >> Signed-off-by: Alejandro Lucero <alucerop@amd.com> >> --- >> drivers/cxl/core/hdm.c | 5 +++-- >> 1 file changed, 3 insertions(+), 2 deletions(-) >> >> diff --git a/drivers/cxl/core/hdm.c b/drivers/cxl/core/hdm.c >> index 3df10517a327..953a5f86a43f 100644 >> --- a/drivers/cxl/core/hdm.c >> +++ b/drivers/cxl/core/hdm.c >> @@ -327,10 +327,11 @@ static int __cxl_dpa_reserve(struct cxl_endpoint_decoder *cxled, >> cxled->dpa_res = res; >> cxled->skip = skipped; >> >> - if (resource_contains(&cxlds->pmem_res, res)) >> + if ((resource_size(&cxlds->pmem_res)) && (resource_contains(&cxlds->pmem_res, res))) { > Excess brackets + I'd break that over two lines. Right. I'll fix it. Thanks > >> cxled->mode = CXL_DECODER_PMEM; >> - else if (resource_contains(&cxlds->ram_res, res)) >> + } else if ((resource_size(&cxlds->ram_res)) && (resource_contains(&cxlds->ram_res, res))) { > Same here, > >> cxled->mode = CXL_DECODER_RAM; >> + } >> else { >> dev_warn(dev, "decoder%d.%d: %pr mixed mode not supported\n", >> port->id, cxled->cxld.id, cxled->dpa_res);
diff --git a/drivers/cxl/core/hdm.c b/drivers/cxl/core/hdm.c index 3df10517a327..953a5f86a43f 100644 --- a/drivers/cxl/core/hdm.c +++ b/drivers/cxl/core/hdm.c @@ -327,10 +327,11 @@ static int __cxl_dpa_reserve(struct cxl_endpoint_decoder *cxled, cxled->dpa_res = res; cxled->skip = skipped; - if (resource_contains(&cxlds->pmem_res, res)) + if ((resource_size(&cxlds->pmem_res)) && (resource_contains(&cxlds->pmem_res, res))) { cxled->mode = CXL_DECODER_PMEM; - else if (resource_contains(&cxlds->ram_res, res)) + } else if ((resource_size(&cxlds->ram_res)) && (resource_contains(&cxlds->ram_res, res))) { cxled->mode = CXL_DECODER_RAM; + } else { dev_warn(dev, "decoder%d.%d: %pr mixed mode not supported\n", port->id, cxled->cxld.id, cxled->dpa_res);