From f5ac2b9eb58f5efad83f2d0e7fa464e8980ecfc9 Mon Sep 17 00:00:00 2001 From: Bing Zhao Date: Wed, 4 Feb 2009 22:22:39 -0800 Subject: [PATCH] libertas: fix power save issue in libertas_sdio module The problem: "iwconfig ethX power on" returns error The cause: "ps_supported" flag was never set for SD8385/8686 The fix: check firmware capabilities returned by GET_HW_SPEC command. Set "ps_supported" to 1 if FW_CAPINFO_PS bit is on. This fix applies to SDIO interface only. Signed-off-by: Bing Zhao Acked-by: Dan Williams Signed-off-by: John W. Linville --- drivers/net/wireless/libertas/defs.h | 1 + drivers/net/wireless/libertas/if_sdio.c | 6 ++++++ 2 files changed, 7 insertions(+) diff --git a/drivers/net/wireless/libertas/defs.h b/drivers/net/wireless/libertas/defs.h index 6388b05df4fc..e8dfde39abfc 100644 --- a/drivers/net/wireless/libertas/defs.h +++ b/drivers/net/wireless/libertas/defs.h @@ -265,6 +265,7 @@ static inline void lbs_deb_hex(unsigned int grp, const char *prompt, u8 *buf, in #define CMD_F_HOSTCMD (1 << 0) #define FW_CAPINFO_WPA (1 << 0) +#define FW_CAPINFO_PS (1 << 1) #define FW_CAPINFO_FIRMWARE_UPGRADE (1 << 13) #define FW_CAPINFO_BOOT2_UPGRADE (1<<14) #define FW_CAPINFO_PERSISTENT_CONFIG (1<<15) diff --git a/drivers/net/wireless/libertas/if_sdio.c b/drivers/net/wireless/libertas/if_sdio.c index 4519d7314f47..987836865ea5 100644 --- a/drivers/net/wireless/libertas/if_sdio.c +++ b/drivers/net/wireless/libertas/if_sdio.c @@ -209,6 +209,9 @@ static int if_sdio_handle_event(struct if_sdio_card *card, event = sdio_readb(card->func, IF_SDIO_EVENT, &ret); if (ret) goto out; + + /* right shift 3 bits to get the event id */ + event >>= 3; } else { if (size < 4) { lbs_deb_sdio("event packet too small (%d bytes)\n", @@ -921,6 +924,9 @@ 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); -- 2.20.1