libertas: remove ps_supported flag, use fwcapinfo

Power save support depends on the firmware capabilities rather than the
card's hardware interface.  Use the FW_CAPINFO_PS bit in the firmware
capabilities mask throughout the driver in place of the redundant
ps_supported flag and don't make decisions about PS support in the
interface drivers (with the exception of a special case in the USB
driver).

V2: put the USB special case in the right place.

Signed-off-by: Andrey Yurovsky <andrey@cozybit.com>
Acked-by: Dan Williams <dcbw@redhat.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

diff --git a/drivers/net/wireless/libertas/dev.h b/drivers/net/wireless/libertas/dev.h
index f9ec69e..578c697 100644 (file)
--- a/drivers/net/wireless/libertas/dev.h
+++ b/drivers/net/wireless/libertas/dev.h
@@ -260,7 +260,6 @@ struct lbs_private {
        u16 psmode;             /* Wlan802_11PowermodeCAM=disable
                                   Wlan802_11PowermodeMAX_PSP=enable */
        u32 psstate;
-       char ps_supported;
        u8 needtowakeup;
 
        struct assoc_request * pending_assoc_req;

diff --git a/drivers/net/wireless/libertas/if_cs.c b/drivers/net/wireless/libertas/if_cs.c
index 2a5b083..f658fd6 100644 (file)
--- a/drivers/net/wireless/libertas/if_cs.c
+++ b/drivers/net/wireless/libertas/if_cs.c
@@ -933,9 +933,6 @@ static int if_cs_probe(struct pcmcia_device *p_dev)
                goto out3;
        }
 
-       /* The firmware for the CF card supports powersave */
-       priv->ps_supported = 1;
-
        ret = 0;
        goto out;
 

diff --git a/drivers/net/wireless/libertas/if_sdio.c b/drivers/net/wireless/libertas/if_sdio.c
index 8cdb88c..89396a7 100644 (file)
--- a/drivers/net/wireless/libertas/if_sdio.c
+++ b/drivers/net/wireless/libertas/if_sdio.c
@@ -1039,9 +1039,6 @@ static int if_sdio_probe(struct sdio_func *func,
        if (ret)
                goto err_activate_card;
 
-       if (priv->fwcapinfo & FW_CAPINFO_PS)
-               priv->ps_supported = 1;
-
 out:
        lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret);
 

diff --git a/drivers/net/wireless/libertas/if_spi.c b/drivers/net/wireless/libertas/if_spi.c
index 6564282..b213de4 100644 (file)
--- a/drivers/net/wireless/libertas/if_spi.c
+++ b/drivers/net/wireless/libertas/if_spi.c
@@ -1118,7 +1118,6 @@ static int __devinit if_spi_probe(struct spi_device *spi)
        priv->card = card;
        priv->hw_host_to_card = if_spi_host_to_card;
        priv->fw_ready = 1;
-       priv->ps_supported = 1;
 
        /* Initialize interrupt handling stuff. */
        card->run_thread = 1;

diff --git a/drivers/net/wireless/libertas/if_usb.c b/drivers/net/wireless/libertas/if_usb.c
index 1844c5a..92bc8c5 100644 (file)
--- a/drivers/net/wireless/libertas/if_usb.c
+++ b/drivers/net/wireless/libertas/if_usb.c
@@ -181,13 +181,14 @@ static void if_usb_setup_firmware(struct lbs_private *priv)
        wake_method.action = cpu_to_le16(CMD_ACT_GET);
        if (lbs_cmd_with_response(priv, CMD_802_11_FW_WAKE_METHOD, &wake_method)) {
                lbs_pr_info("Firmware does not seem to support PS mode\n");
+               priv->fwcapinfo &= ~FW_CAPINFO_PS;
        } else {
                if (le16_to_cpu(wake_method.method) == CMD_WAKE_METHOD_COMMAND_INT) {
                        lbs_deb_usb("Firmware seems to support PS with wake-via-command\n");
-                       priv->ps_supported = 1;
                } else {
                        /* The versions which boot up this way don't seem to
                           work even if we set it to the command interrupt */
+                       priv->fwcapinfo &= ~FW_CAPINFO_PS;
                        lbs_pr_info("Firmware doesn't wake via command interrupt; disabling PS mode\n");
                }
        }

diff --git a/drivers/net/wireless/libertas/wext.c b/drivers/net/wireless/libertas/wext.c
index 8bc1907..e96451c 100644 (file)
--- a/drivers/net/wireless/libertas/wext.c
+++ b/drivers/net/wireless/libertas/wext.c
@@ -712,7 +712,7 @@ static int lbs_set_power(struct net_device *dev, struct iw_request_info *info,
 
        lbs_deb_enter(LBS_DEB_WEXT);
 
-       if (!priv->ps_supported) {
+       if (!(priv->fwcapinfo & FW_CAPINFO_PS)) {
                if (vwrq->disabled)
                        return 0;
                else