[wireless-next][PATCH 1/2] b43: ssb: refuse to support more than IEEE 802.11 core

Rafał Miłecki
2014-04-20T18:31:17Z

Some ancient Broadcom devices had one core per band, e.g.:
ssb: Found chip with id 0x4306, rev 0x02 and package 0x00
ssb: Core 0 found: ChipCommon (cc 0x800, rev 0x02, vendor 0x4243)
ssb: Core 1 found: IEEE 802.11 (cc 0x812, rev 0x04, vendor 0x4243)
ssb: Core 2 found: PCMCIA (cc 0x80D, rev 0x01, vendor 0x4243)
ssb: Core 3 found: V90 (cc 0x807, rev 0x01, vendor 0x4243)
ssb: Core 4 found: PCI (cc 0x804, rev 0x07, vendor 0x4243)
ssb: Core 5 found: IEEE 802.11 (cc 0x812, rev 0x04, vendor 0x4243)

This hardware model was dropped for newer devices handled by b43.

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
---
With this patchset I'm still able to use my BCM4321, so I guess it's
alright & safe :)
---
drivers/net/wireless/b43/main.c | 37 ++++++++++++++++++++-----------------
1 file changed, 20 insertions(+), 17 deletions(-)

diff --git a/drivers/net/wireless/b43/main.c b/drivers/net/wireless/b43/main.c
index 69fc3d6..cf84cf2 100644
--- a/drivers/net/wireless/b43/main.c
+++ b/drivers/net/wireless/b43/main.c
@@ -5486,39 +5486,42 @@ int b43_ssb_probe(struct ssb_device *sdev, const struct ssb_device_id *id)
struct b43_bus_dev *dev;
struct b43_wl *wl;
int err;
- int first = 0;

dev = b43_bus_dev_ssb_init(sdev);
if (!dev)
return -ENOMEM;

wl = ssb_get_devtypedata(sdev);
- if (!wl) {
- /* Probing the first core. Must setup common struct b43_wl */
- first = 1;
- b43_sprom_fixup(sdev->bus);
- wl = b43_wireless_init(dev);
- if (IS_ERR(wl)) {
- err = PTR_ERR(wl);
- goto out;
- }
- ssb_set_devtypedata(sdev, wl);
- B43_WARN_ON(ssb_get_devtypedata(sdev) != wl);
+ if (wl) {
+ b43err(NULL, "Dual-core devices are not supported\n");
+ err = -ENOTSUPP;
+ goto err_ssb_kfree_dev;
}
+
+ b43_sprom_fixup(sdev->bus);
+
+ wl = b43_wireless_init(dev);
+ if (IS_ERR(wl)) {
+ err = PTR_ERR(wl);
+ goto err_ssb_kfree_dev;
+ }
+ ssb_set_devtypedata(sdev, wl);
+ B43_WARN_ON(ssb_get_devtypedata(sdev) != wl);
+
err = b43_one_core_attach(dev, wl);
if (err)
- goto err_wireless_exit;
+ goto err_ssb_wireless_exit;

/* setup and start work to load firmware */
INIT_WORK(&wl->firmware_load, b43_request_firmware);
schedule_work(&wl->firmware_load);

- out:
return err;

- err_wireless_exit:
- if (first)
- b43_wireless_exit(dev, wl);
+err_ssb_wireless_exit:
+ b43_wireless_exit(dev, wl);
+err_ssb_kfree_dev:
+ kfree(dev);
return err;
}

--
1.8.4.5