a7y18lte-ubports/android_kernel_samsung_universal7885
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bcma: Move initialization of SPROM to prevent overwrite

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The first thing bcm47xx_fill_sprom does is initialize (zero fill) the SPROM.  For
BCMA SOC, this wipes out any values previously read by bcm47xx_fill_sprom_ethernet
(see arch/mips/bcm47xx/setup.c - bcm47xx_get_sprom_bcma).  Move the initialization
of SPROM so it is called prior to filling in any values.

Signed-off-by: Nathan Hintz <nlhintz@hotmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Nathan Hintz 2012-05-04 21:56:32 -07:00 committed by John W. Linville
parent 82a7c2bb5f
commit 5fe2e0711d
2 changed files with 4 additions and 2 deletions
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4
arch/mips/bcm47xx/setup.c
View File

@ -90,6 +90,7 @@ static int bcm47xx_get_sprom_ssb(struct ssb_bus *bus, struct ssb_sprom *out)
char prefix[10]; char prefix[10];
if (bus->bustype == SSB_BUSTYPE_PCI) { if (bus->bustype == SSB_BUSTYPE_PCI) {
memset(out, 0, sizeof(struct ssb_sprom));
snprintf(prefix, sizeof(prefix), "pci/%u/%u/", snprintf(prefix, sizeof(prefix), "pci/%u/%u/",
bus->host_pci->bus->number + 1, bus->host_pci->bus->number + 1,
PCI_SLOT(bus->host_pci->devfn)); PCI_SLOT(bus->host_pci->devfn));
@ -111,6 +112,7 @@ static int bcm47xx_get_invariants(struct ssb_bus *bus,
bcm47xx_fill_ssb_boardinfo(&iv->boardinfo, NULL); bcm47xx_fill_ssb_boardinfo(&iv->boardinfo, NULL);
memset(&iv->sprom, 0, sizeof(struct ssb_sprom));
bcm47xx_fill_sprom(&iv->sprom, NULL); bcm47xx_fill_sprom(&iv->sprom, NULL);
if (nvram_getenv("cardbus", buf, sizeof(buf)) >= 0) if (nvram_getenv("cardbus", buf, sizeof(buf)) >= 0)
@ -159,12 +161,14 @@ static int bcm47xx_get_sprom_bcma(struct bcma_bus *bus, struct ssb_sprom *out)
switch (bus->hosttype) { switch (bus->hosttype) {
case BCMA_HOSTTYPE_PCI: case BCMA_HOSTTYPE_PCI:
memset(out, 0, sizeof(struct ssb_sprom));
snprintf(prefix, sizeof(prefix), "pci/%u/%u/", snprintf(prefix, sizeof(prefix), "pci/%u/%u/",
bus->host_pci->bus->number + 1, bus->host_pci->bus->number + 1,
PCI_SLOT(bus->host_pci->devfn)); PCI_SLOT(bus->host_pci->devfn));
bcm47xx_fill_sprom(out, prefix); bcm47xx_fill_sprom(out, prefix);
return 0; return 0;
case BCMA_HOSTTYPE_SOC: case BCMA_HOSTTYPE_SOC:
memset(out, 0, sizeof(struct ssb_sprom));
bcm47xx_fill_sprom_ethernet(out, NULL); bcm47xx_fill_sprom_ethernet(out, NULL);
core = bcma_find_core(bus, BCMA_CORE_80211); core = bcma_find_core(bus, BCMA_CORE_80211);
if (core) { if (core) {

2
arch/mips/bcm47xx/sprom.c
View File

@ -557,8 +557,6 @@ void bcm47xx_fill_sprom_ethernet(struct ssb_sprom *sprom, const char *prefix)
void bcm47xx_fill_sprom(struct ssb_sprom *sprom, const char *prefix) void bcm47xx_fill_sprom(struct ssb_sprom *sprom, const char *prefix)
{ {
memset(sprom, 0, sizeof(struct ssb_sprom));
bcm47xx_fill_sprom_ethernet(sprom, prefix); bcm47xx_fill_sprom_ethernet(sprom, prefix);
nvram_read_u8(prefix, NULL, "sromrev", &sprom->revision, 0); nvram_read_u8(prefix, NULL, "sromrev", &sprom->revision, 0);