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cxgb4: Fixed the code to use correct length for part number 

Previously it was using the length value of serial number.
Also added macro for VPD unique identifier (0x82).

Signed-off-by: Casey Leedom <leedom@chelsio.com>
Signed-off-by: Hariprasad Shenai <hariprasad@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Hariprasad Shenai 2014-09-01 19:54:56 +05:30 committed by David S. Miller
parent 444018a7f1
commit 63a92fe6f7
1 changed files with 10 additions and 1 deletions
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11
drivers/net/ethernet/chelsio/cxgb4/t4_hw.c
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@ -566,6 +566,7 @@ int t4_memory_rw(struct adapter *adap, int win, int mtype, u32 addr,
#define VPD_BASE 0x400
#define VPD_BASE_OLD 0
#define VPD_LEN 1024
#define CHELSIO_VPD_UNIQUE_ID 0x82
/**
* t4_seeprom_wp - enable/disable EEPROM write protection
@ -603,7 +604,14 @@ int get_vpd_params(struct adapter *adapter, struct vpd_params *p)
ret = pci_read_vpd(adapter->pdev, VPD_BASE, sizeof(u32), vpd);
if (ret < 0)
goto out;
addr = *vpd == 0x82 ? VPD_BASE : VPD_BASE_OLD;
/* The VPD shall have a unique identifier specified by the PCI SIG.
* For chelsio adapters, the identifier is 0x82. The first byte of a VPD
* shall be CHELSIO_VPD_UNIQUE_ID (0x82). The VPD programming software
* is expected to automatically put this entry at the
* beginning of the VPD.
*/
addr = *vpd == CHELSIO_VPD_UNIQUE_ID ? VPD_BASE : VPD_BASE_OLD;
ret = pci_read_vpd(adapter->pdev, addr, VPD_LEN, vpd);
if (ret < 0)
@ -667,6 +675,7 @@ int get_vpd_params(struct adapter *adapter, struct vpd_params *p)
i = pci_vpd_info_field_size(vpd + sn - PCI_VPD_INFO_FLD_HDR_SIZE);
memcpy(p->sn, vpd + sn, min(i, SERNUM_LEN));
strim(p->sn);
i = pci_vpd_info_field_size(vpd + pn - PCI_VPD_INFO_FLD_HDR_SIZE);
memcpy(p->pn, vpd + pn, min(i, PN_LEN));
strim(p->pn);