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brcm80211: smac: bugfix for tx mute in brcms_b_init()

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Transmit can only be muted if the mac core is enabled. When brcms_b_init()
is called, the mac core is suspended. Brcms_b_init() calls a transmit mute
function that requires an enabled mac core. This code path is never taken,
but would have been taken in subsequent patches.

Reviewed-by: Alwin Beukers <alwin@broadcom.com>
Reviewed-by: Arend van Spriel <arend@broadcom.com>
Reviewed-by: Pieter-Paul Giesberts <pieterpg@broadcom.com>
Signed-off-by: Roland Vossen <rvossen@broadcom.com>
Signed-off-by: Arend van Spriel <arend@broadcom.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Roland Vossen 2011-10-21 16:16:25 +02:00 • committed by John W. Linville
parent 43ac09722f
commit a8bc4917ed
1 changed files with 8 additions and 8 deletions
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16
drivers/net/wireless/brcm80211/brcmsmac/main.c
View file

@ -2452,6 +2452,7 @@ static void brcms_b_tx_fifo_resume(struct brcms_hardware *wlc_hw,
} }
} }
/* precondition: requires the mac core to be enabled */
static void brcms_b_mute(struct brcms_hardware *wlc_hw, bool on, u32 flags) static void brcms_b_mute(struct brcms_hardware *wlc_hw, bool on, u32 flags)
{ {
static const u8 null_ether_addr[ETH_ALEN] = {0, 0, 0, 0, 0, 0}; static const u8 null_ether_addr[ETH_ALEN] = {0, 0, 0, 0, 0, 0};
@ -3354,8 +3355,7 @@ static void brcms_b_coreinit(struct brcms_c_info *wlc)
} }
void void
static brcms_b_init(struct brcms_hardware *wlc_hw, u16 chanspec, static brcms_b_init(struct brcms_hardware *wlc_hw, u16 chanspec) {
bool mute) {
u32 macintmask; u32 macintmask;
bool fastclk; bool fastclk;
struct brcms_c_info *wlc = wlc_hw->wlc; struct brcms_c_info *wlc = wlc_hw->wlc;
@ -3380,10 +3380,6 @@ static brcms_b_init(struct brcms_hardware *wlc_hw, u16 chanspec,
/* core-specific initialization */ /* core-specific initialization */
brcms_b_coreinit(wlc); brcms_b_coreinit(wlc);
/* suspend the tx fifos and mute the phy for preism cac time */
if (mute)
brcms_b_mute(wlc_hw, ON, PHY_MUTE_FOR_PREISM);
/* band-specific inits */ /* band-specific inits */
brcms_b_bsinit(wlc, chanspec); brcms_b_bsinit(wlc, chanspec);
@ -8261,7 +8257,7 @@ void brcms_c_init(struct brcms_c_info *wlc)
{ {
struct d11regs __iomem *regs; struct d11regs __iomem *regs;
u16 chanspec; u16 chanspec;
bool mute = false; bool mute_tx = false;
BCMMSG(wlc->wiphy, "wl%d\n", wlc->pub->unit); BCMMSG(wlc->wiphy, "wl%d\n", wlc->pub->unit);
@ -8277,7 +8273,7 @@ void brcms_c_init(struct brcms_c_info *wlc)
else else
chanspec = brcms_c_init_chanspec(wlc); chanspec = brcms_c_init_chanspec(wlc);
brcms_b_init(wlc->hw, chanspec, mute); brcms_b_init(wlc->hw, chanspec);
/* update beacon listen interval */ /* update beacon listen interval */
brcms_c_bcn_li_upd(wlc); brcms_c_bcn_li_upd(wlc);
@ -8343,6 +8339,10 @@ void brcms_c_init(struct brcms_c_info *wlc)
/* ..now really unleash hell (allow the MAC out of suspend) */ /* ..now really unleash hell (allow the MAC out of suspend) */
brcms_c_enable_mac(wlc); brcms_c_enable_mac(wlc);
/* suspend the tx fifos and mute the phy for preism cac time */
if (mute_tx)
brcms_b_mute(wlc->hw, ON, PHY_MUTE_FOR_PREISM);
/* clear tx flow control */ /* clear tx flow control */
brcms_c_txflowcontrol_reset(wlc); brcms_c_txflowcontrol_reset(wlc);