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brcmfmac: support NVRAMs containing pci devpaths (instead of pcie)

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Recently Broadcom added support for NVRAMs with entries for multiple
PCIe devices. One of the supported formats is based on prefixes defined
like: devpath0=pcie/1/4/ and entries like 0:foo=bar 0:baz=qux etc.

Unfortunately there are also a bit older devices using different way of
defining prefixes, e.g. SmartRG SR400ac (2 x BCM43602) with entries:
devpath0=pci/1/1/
devpath1=pci/2/1
Broadcom stated this old format will never be used/supported by brcmfmac
but given the simplicity of this patch I'll insist on supporting it.

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
This commit is contained in:
Rafał Miłecki 2015-05-28 14:19:21 +02:00 • committed by Kalle Valo
parent 39d94eaa76
commit f33d591539
1 changed files with 8 additions and 2 deletions
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10
drivers/net/wireless/brcm80211/brcmfmac/firmware.c
View file

@ -232,6 +232,8 @@ static void brcmf_fw_strip_multi_v1(struct nvram_parser *nvp, u16 domain_nr,
u16 bus_nr)
{
/* Device path with a leading '=' key-value separator */
char pci_path[] = "=pci/?/?";
size_t pci_len;
char pcie_path[] = "=pcie/?/?";
size_t pcie_len;
@ -251,6 +253,9 @@ static void brcmf_fw_strip_multi_v1(struct nvram_parser *nvp, u16 domain_nr,
/* First search for the devpathX and see if it is the configuration
* for domain_nr/bus_nr. Search complete nvp
*/
snprintf(pci_path, sizeof(pci_path), "=pci/%d/%d", domain_nr,
bus_nr);
pci_len = strlen(pci_path);
snprintf(pcie_path, sizeof(pcie_path), "=pcie/%d/%d", domain_nr,
bus_nr);
pcie_len = strlen(pcie_path);
@ -260,8 +265,9 @@ static void brcmf_fw_strip_multi_v1(struct nvram_parser *nvp, u16 domain_nr,
/* Format: devpathX=pcie/Y/Z/
* Y = domain_nr, Z = bus_nr, X = virtual ID
*/
if ((strncmp(&nvp->nvram[i], "devpath", 7) == 0) &&
(strncmp(&nvp->nvram[i + 8], pcie_path, pcie_len) == 0)) {
if (strncmp(&nvp->nvram[i], "devpath", 7) == 0 &&
(!strncmp(&nvp->nvram[i + 8], pci_path, pci_len) ||
!strncmp(&nvp->nvram[i + 8], pcie_path, pcie_len))) {
id = nvp->nvram[i + 7] - '0';
found = true;
break;