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cxgb4: Validate VPD checksum with pci_vpd_check_csum() 

Validate the VPD checksum with pci_vpd_check_csum() to simplify the code.

Link: https://lore.kernel.org/r/70404ece-0036-c0ce-f824-f5637e54115e@gmail.com
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
This commit is contained in:
Heiner Kallweit 2021-08-22 15:57:27 +02:00 committed by Bjorn Helgaas
parent 0ff25f6a17
commit 52f0a1e007
1 changed files with 4 additions and 8 deletions
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12
drivers/net/ethernet/chelsio/cxgb4/t4_hw.c
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@ -2745,7 +2745,7 @@ int t4_get_raw_vpd_params(struct adapter *adapter, struct vpd_params *p)
{
int i, ret = 0, addr;
int ec, sn, pn, na;
u8 *vpd, csum, base_val = 0;
u8 *vpd, base_val = 0;
unsigned int vpdr_len, kw_offset, id_len;
vpd = vmalloc(VPD_LEN);
@ -2800,13 +2800,9 @@ int t4_get_raw_vpd_params(struct adapter *adapter, struct vpd_params *p)
var += PCI_VPD_INFO_FLD_HDR_SIZE; \
} while (0)
FIND_VPD_KW(i, "RV");
for (csum = 0; i >= 0; i--)
csum += vpd[i];
if (csum) {
dev_err(adapter->pdev_dev,
"corrupted VPD EEPROM, actual csum %u\n", csum);
ret = pci_vpd_check_csum(vpd, VPD_LEN);
if (ret) {
dev_err(adapter->pdev_dev, "VPD checksum incorrect or missing\n");
ret = -EINVAL;
goto out;
}