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authorHauke Mehrtens <hauke@hauke-m.de>2012-09-29 22:38:11 +0400
committerJohn W. Linville <linville@tuxdriver.com>2012-10-19 23:52:53 +0400
commit017c4c3bdeb4e6c38094eb2330a57370f68f4853 (patch)
treed0eee869017c910a1e97c18650f97b15d0225125 /drivers/bcma
parentd954162c54ea81cee12acec1ee5fa19214d0de96 (diff)
downloadlinux-017c4c3bdeb4e6c38094eb2330a57370f68f4853.tar.xz
bcma: use fallback sprom if sprom on card was not valid
Sometimes the PCIe card indicates that it has a sprom somewhere and we are able to read the memory region, but it is empty and not valid. In these cases we should try to use the fallback sprom as a last chance. This is the case for the PCIe cards in my ASUS RT-N66U (BCM4706 + 2 times BCM4331) and I have heard of someone having the same problem with an other PCIe card connected to an other Broadcom SoC. Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/bcma')
-rw-r--r--drivers/bcma/sprom.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/bcma/sprom.c b/drivers/bcma/sprom.c
index 0d546b64be34..4adf9ef9a113 100644
--- a/drivers/bcma/sprom.c
+++ b/drivers/bcma/sprom.c
@@ -595,8 +595,11 @@ int bcma_sprom_get(struct bcma_bus *bus)
bcma_chipco_bcm4331_ext_pa_lines_ctl(&bus->drv_cc, true);
err = bcma_sprom_valid(sprom);
- if (err)
+ if (err) {
+ bcma_warn(bus, "invalid sprom read from the PCIe card, try to use fallback sprom\n");
+ err = bcma_fill_sprom_with_fallback(bus, &bus->sprom);
goto out;
+ }
bcma_sprom_extract_r8(bus, sprom);