[PATCH v3] libertas: prioritize usb8388_olpc.bin firmware on OLPC machines
From: Andres Salomon <hidden>
Date: 2011-09-09 00:35:21
Normally, the v9 firmware will be loaded if it's available. However, on OLPC XO-1 machines, the olpc-specific firmware supports extra functionality. This makes the libertas driver attempt to load the custom firmware first if the machine is an OLPC machine; if that fails (or it's not an OLPC machine), fall back to attempting to load the other firmwares. usb8388_olpc.bin is currently found in the linux-firmware repository. Signed-off-by: Andres Salomon <redacted> --- v3: changed firmware path to include libertas/ subdirectory. Since the last submission (v2), usb8388_olpc.bin has found its way into wireless-firmware. It'd be nice to get this into the next merge window. drivers/net/wireless/libertas/if_usb.c | 21 +++++++++++++++++++++ 1 files changed, 21 insertions(+), 0 deletions(-)
diff --git a/drivers/net/wireless/libertas/if_usb.c b/drivers/net/wireless/libertas/if_usb.c
index b5acc39..94f8f3e 100644
--- a/drivers/net/wireless/libertas/if_usb.c
+++ b/drivers/net/wireless/libertas/if_usb.c@@ -973,6 +973,23 @@ static const struct { { MODEL_8682, "libertas/usb8682.bin" } }; +#ifdef CONFIG_OLPC + +static int try_olpc_fw(struct if_usb_card *cardp) +{ + int retval = -ENOENT; + + /* try the OLPC firmware first; fall back to fw_table list */ + if (machine_is_olpc() && cardp->model == MODEL_8388) + retval = request_firmware(&cardp->fw, + "libertas/usb8388_olpc.bin", &cardp->udev->dev); + return retval; +} + +#else +static int try_olpc_fw(struct if_usb_card *cardp) { return -ENOENT; } +#endif /* !CONFIG_OLPC */ + static int get_fw(struct if_usb_card *cardp, const char *fwname) { int i;
@@ -981,6 +998,10 @@ static int get_fw(struct if_usb_card *cardp, const char *fwname) if (fwname) return request_firmware(&cardp->fw, fwname, &cardp->udev->dev); + /* Handle OLPC firmware */ + if (try_olpc_fw(cardp) == 0) + return 0; + /* Otherwise search for firmware to use */ for (i = 0; i < ARRAY_SIZE(fw_table); i++) { if (fw_table[i].model != cardp->model)
--
1.7.2.5