| Message ID | ccbc11f1-4dbb-e2c8-d0ea-559e06d4c340@gmail.com |
|---|---|
| State | New |
| Headers | show |
| Series | [v2] PCI/VPD: Silence warning if optional VPD PROM is missing | expand |
On Thu, Apr 01, 2021 at 02:03:49PM +0200, Heiner Kallweit wrote: > Realtek RTL8169/8168/8125 NIC families indicate VPD capability and an > optional VPD EEPROM can be connected via I2C/SPI. However I haven't > seen any card or system with such a VPD EEPROM yet. The missing EEPROM > causes the following warning whenever e.g. lscpi -vv is executed. > > invalid short VPD tag 00 at offset 01 > > The warning confuses users, I think we should handle the situation more > gentle. Therefore, if first VPD byte is read as 0x00, assume a missing > optional VPD PROM and replace the warning with a more descriptive > message at info level. > > Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com> Looks perfect, applied to pci/vpd for v5.13, thanks! > --- > v2: - don't remove user info completely, replace the warning with a more > message at info level > --- > drivers/pci/vpd.c | 5 +++++ > 1 file changed, 5 insertions(+) > > diff --git a/drivers/pci/vpd.c b/drivers/pci/vpd.c > index d1cbc5e64..48f4a9ae8 100644 > --- a/drivers/pci/vpd.c > +++ b/drivers/pci/vpd.c > @@ -74,6 +74,11 @@ static size_t pci_vpd_size(struct pci_dev *dev, size_t old_size) > pci_read_vpd(dev, off, 1, header) == 1) { > unsigned char tag; > > + if (!header[0] && !off) { > + pci_info(dev, "Invalid VPD tag 00, assume missing optional VPD EPROM\n"); > + return 0; > + } > + > if (header[0] & PCI_VPD_LRDT) { > /* Large Resource Data Type Tag */ > tag = pci_vpd_lrdt_tag(header); > -- > 2.31.1 >
diff --git a/drivers/pci/vpd.c b/drivers/pci/vpd.c index d1cbc5e64..48f4a9ae8 100644 --- a/drivers/pci/vpd.c +++ b/drivers/pci/vpd.c @@ -74,6 +74,11 @@ static size_t pci_vpd_size(struct pci_dev *dev, size_t old_size) pci_read_vpd(dev, off, 1, header) == 1) { unsigned char tag; + if (!header[0] && !off) { + pci_info(dev, "Invalid VPD tag 00, assume missing optional VPD EPROM\n"); + return 0; + } + if (header[0] & PCI_VPD_LRDT) { /* Large Resource Data Type Tag */ tag = pci_vpd_lrdt_tag(header);
Realtek RTL8169/8168/8125 NIC families indicate VPD capability and an optional VPD EEPROM can be connected via I2C/SPI. However I haven't seen any card or system with such a VPD EEPROM yet. The missing EEPROM causes the following warning whenever e.g. lscpi -vv is executed. invalid short VPD tag 00 at offset 01 The warning confuses users, I think we should handle the situation more gentle. Therefore, if first VPD byte is read as 0x00, assume a missing optional VPD PROM and replace the warning with a more descriptive message at info level. Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com> --- v2: - don't remove user info completely, replace the warning with a more message at info level --- drivers/pci/vpd.c | 5 +++++ 1 file changed, 5 insertions(+)