From: Arend van Spriel <arend@xxxxxxxxxxxx>
Several global variables that were set but never initialized have
been removed.
Reported-by: Johannes Berg <johannes@xxxxxxxxxxxxxxxx>
Reviewed-by: Franky (Zhenhui) Lin <frankyl@xxxxxxxxxxxx>
Reviewed-by: Roland Vossen <rvossen@xxxxxxxxxxxx>
Reviewed-by: Pieter-Paul Giesberts <pieterpg@xxxxxxxxxxxx>
Signed-off-by: Franky Lin <frankyl@xxxxxxxxxxxx>
---
drivers/staging/brcm80211/brcmfmac/dhd_sdio.c | 161 ++++++++++--------------
1 files changed, 67 insertions(+), 94 deletions(-)
diff --git a/drivers/staging/brcm80211/brcmfmac/dhd_sdio.c b/drivers/staging/brcm80211/brcmfmac/dhd_sdio.c
index dade3ec..720f567 100644
--- a/drivers/staging/brcm80211/brcmfmac/dhd_sdio.c
+++ b/drivers/staging/brcm80211/brcmfmac/dhd_sdio.c
@@ -761,26 +761,18 @@ module_param(brcmf_poll, uint, 0);
uint brcmf_intr = true;
module_param(brcmf_intr, uint, 0);
-/* IOCTL response timeout */
-static int brcmf_ioctl_timeout_msec = IOCTL_RESP_TIMEOUT;
-
/* override the RAM size if possible */
#define DONGLE_MIN_MEMSIZE (128 * 1024)
int brcmf_dongle_memsize;
module_param(brcmf_dongle_memsize, int, 0);
-static bool brcmf_alignctl;
-
-static bool retrydata;
-#define RETRYCHAN(chan) (((chan) == SDPCM_EVENT_CHANNEL) || retrydata)
-
-static const uint firstread = BRCMF_FIRSTREAD;
+#define RETRYCHAN(chan) ((chan) == SDPCM_EVENT_CHANNEL)
/* Retry count for register access failures */
static const uint retry_limit = 2;
-/* Force even SD lengths (some host controllers mess up on odd bytes) */
-static bool forcealign;
+/* Limit on rounding up frames */
+static const uint max_roundup = 512;
#define ALIGNMENT 4
@@ -794,12 +786,6 @@ static void pkt_align(struct sk_buff *p, int len, int align)
__skb_trim(p, len);
}
-/* Limit on rounding up frames */
-static const uint max_roundup = 512;
-
-/* Try doing readahead */
-static bool brcmf_readahead;
-
/* To check if there's window offered */
static bool data_ok(struct brcmf_bus *bus)
{
@@ -1697,7 +1683,7 @@ static int brcmf_sdbrcm_ioctl_resp_wait(struct brcmf_bus *bus, uint *condition,
bool *pending)
{
DECLARE_WAITQUEUE(wait, current);
- int timeout = msecs_to_jiffies(brcmf_ioctl_timeout_msec);
+ int timeout = msecs_to_jiffies(IOCTL_RESP_TIMEOUT);
/* Wait until control frame is available */
add_wait_queue(&bus->ioctl_resp_wait, &wait);
@@ -1733,21 +1719,19 @@ brcmf_sdbrcm_read_control(struct brcmf_bus *bus, u8 *hdr, uint len, uint doff)
/* Set rxctl for frame (w/optional alignment) */
bus->rxctl = bus->rxbuf;
- if (brcmf_alignctl) {
- bus->rxctl += firstread;
- pad = ((unsigned long)bus->rxctl % BRCMF_SDALIGN);
- if (pad)
- bus->rxctl += (BRCMF_SDALIGN - pad);
- bus->rxctl -= firstread;
- }
+ bus->rxctl += BRCMF_FIRSTREAD;
+ pad = ((unsigned long)bus->rxctl % BRCMF_SDALIGN);
+ if (pad)
+ bus->rxctl += (BRCMF_SDALIGN - pad);
+ bus->rxctl -= BRCMF_FIRSTREAD;
/* Copy the already-read portion over */
- memcpy(bus->rxctl, hdr, firstread);
- if (len <= firstread)
+ memcpy(bus->rxctl, hdr, BRCMF_FIRSTREAD);
+ if (len <= BRCMF_FIRSTREAD)
goto gotpkt;
/* Raise rdlen to next SDIO block to avoid tail command */
- rdlen = len - firstread;
+ rdlen = len - BRCMF_FIRSTREAD;
if (bus->roundup && bus->blocksize && (rdlen > bus->blocksize)) {
pad = bus->blocksize - (rdlen % bus->blocksize);
if ((pad <= bus->roundup) && (pad < bus->blocksize) &&
@@ -1758,11 +1742,11 @@ brcmf_sdbrcm_read_control(struct brcmf_bus *bus, u8 *hdr, uint len, uint doff)
}
/* Satisfy length-alignment requirements */
- if (forcealign && (rdlen & (ALIGNMENT - 1)))
+ if (rdlen & (ALIGNMENT - 1))
rdlen = roundup(rdlen, ALIGNMENT);
/* Drop if the read is too big or it exceeds our maximum */
- if ((rdlen + firstread) > bus->drvr->maxctl) {
+ if ((rdlen + BRCMF_FIRSTREAD) > bus->drvr->maxctl) {
brcmf_dbg(ERROR, "%d-byte control read exceeds %d-byte buffer\n",
rdlen, bus->drvr->maxctl);
bus->drvr->rx_errors++;
@@ -1783,7 +1767,7 @@ brcmf_sdbrcm_read_control(struct brcmf_bus *bus, u8 *hdr, uint len, uint doff)
sdret = brcmf_sdcard_recv_buf(bus->sdiodev,
bus->sdiodev->sbwad,
SDIO_FUNC_2,
- F2SYNC, (bus->rxctl + firstread), rdlen,
+ F2SYNC, (bus->rxctl + BRCMF_FIRSTREAD), rdlen,
NULL);
bus->f2rxdata++;
@@ -1857,7 +1841,7 @@ brcmf_sdbrcm_readframes(struct brcmf_bus *bus, uint maxframes, bool *finished)
}
/* Try doing single read if we can */
- if (brcmf_readahead && bus->nextlen) {
+ if (bus->nextlen) {
u16 nextlen = bus->nextlen;
bus->nextlen = 0;
@@ -1871,7 +1855,7 @@ brcmf_sdbrcm_readframes(struct brcmf_bus *bus, uint maxframes, bool *finished)
(rdlen % bus->blocksize);
if ((pad <= bus->roundup)
&& (pad < bus->blocksize)
- && ((rdlen + pad + firstread) <
+ && ((rdlen + pad + BRCMF_FIRSTREAD) <
MAX_RX_DATASZ))
rdlen += pad;
} else if (rdlen % BRCMF_SDALIGN) {
@@ -2055,8 +2039,8 @@ brcmf_sdbrcm_readframes(struct brcmf_bus *bus, uint maxframes, bool *finished)
/* Read frame header (hardware and software) */
sdret = brcmf_sdcard_recv_buf(bus->sdiodev, bus->sdiodev->sbwad,
- SDIO_FUNC_2, F2SYNC, bus->rxhdr, firstread,
- NULL);
+ SDIO_FUNC_2, F2SYNC, bus->rxhdr,
+ BRCMF_FIRSTREAD, NULL);
bus->f2rxhdrs++;
if (sdret < 0) {
@@ -2162,24 +2146,24 @@ brcmf_sdbrcm_readframes(struct brcmf_bus *bus, uint maxframes, bool *finished)
SDPCM_GLOM_CHANNEL */
/* Length to read */
- rdlen = (len > firstread) ? (len - firstread) : 0;
+ rdlen = (len > BRCMF_FIRSTREAD) ? (len - BRCMF_FIRSTREAD) : 0;
/* May pad read to blocksize for efficiency */
if (bus->roundup && bus->blocksize &&
(rdlen > bus->blocksize)) {
pad = bus->blocksize - (rdlen % bus->blocksize);
if ((pad <= bus->roundup) && (pad < bus->blocksize) &&
- ((rdlen + pad + firstread) < MAX_RX_DATASZ))
+ ((rdlen + pad + BRCMF_FIRSTREAD) < MAX_RX_DATASZ))
rdlen += pad;
} else if (rdlen % BRCMF_SDALIGN) {
rdlen += BRCMF_SDALIGN - (rdlen % BRCMF_SDALIGN);
}
/* Satisfy length-alignment requirements */
- if (forcealign && (rdlen & (ALIGNMENT - 1)))
+ if (rdlen & (ALIGNMENT - 1))
rdlen = roundup(rdlen, ALIGNMENT);
- if ((rdlen + firstread) > MAX_RX_DATASZ) {
+ if ((rdlen + BRCMF_FIRSTREAD) > MAX_RX_DATASZ) {
/* Too long -- skip this frame */
brcmf_dbg(ERROR, "too long: len %d rdlen %d\n",
len, rdlen);
@@ -2189,7 +2173,8 @@ brcmf_sdbrcm_readframes(struct brcmf_bus *bus, uint maxframes, bool *finished)
continue;
}
- pkt = brcmu_pkt_buf_get_skb(rdlen + firstread + BRCMF_SDALIGN);
+ pkt = brcmu_pkt_buf_get_skb(rdlen +
+ BRCMF_FIRSTREAD + BRCMF_SDALIGN);
if (!pkt) {
/* Give up on data, request rtx of events */
brcmf_dbg(ERROR, "brcmu_pkt_buf_get_skb failed: rdlen %d chan %d\n",
@@ -2200,7 +2185,7 @@ brcmf_sdbrcm_readframes(struct brcmf_bus *bus, uint maxframes, bool *finished)
}
/* Leave room for what we already read, and align remainder */
- skb_pull(pkt, firstread);
+ skb_pull(pkt, BRCMF_FIRSTREAD);
pkt_align(pkt, rdlen, BRCMF_SDALIGN);
/* Read the remaining frame data */
@@ -2221,8 +2206,8 @@ brcmf_sdbrcm_readframes(struct brcmf_bus *bus, uint maxframes, bool *finished)
}
/* Copy the already-read portion */
- skb_push(pkt, firstread);
- memcpy(pkt->data, bus->rxhdr, firstread);
+ skb_push(pkt, BRCMF_FIRSTREAD);
+ memcpy(pkt->data, bus->rxhdr, BRCMF_FIRSTREAD);
#ifdef BCMDBG
if (BRCMF_BYTES_ON() && BRCMF_DATA_ON()) {
@@ -2328,7 +2313,6 @@ static int brcmf_sdbrcm_txpkt(struct brcmf_bus *bus, struct sk_buff *pkt,
u8 *frame;
u16 len, pad = 0;
u32 swheader;
- uint retries = 0;
struct sk_buff *new;
int i;
@@ -2413,48 +2397,44 @@ static int brcmf_sdbrcm_txpkt(struct brcmf_bus *bus, struct sk_buff *pkt,
}
/* Some controllers have trouble with odd bytes -- round to even */
- if (forcealign && (len & (ALIGNMENT - 1)))
+ if (len & (ALIGNMENT - 1))
len = roundup(len, ALIGNMENT);
- do {
- ret = brcmf_sdbrcm_send_buf(bus, bus->sdiodev->sbwad,
- SDIO_FUNC_2, F2SYNC, frame,
- len, pkt);
- bus->f2txdata++;
+ ret = brcmf_sdbrcm_send_buf(bus, bus->sdiodev->sbwad,
+ SDIO_FUNC_2, F2SYNC, frame,
+ len, pkt);
+ bus->f2txdata++;
- if (ret < 0) {
- /* On failure, abort the command
- and terminate the frame */
- brcmf_dbg(INFO, "sdio error %d, abort command and terminate frame\n",
- ret);
- bus->tx_sderrs++;
+ if (ret < 0) {
+ /* On failure, abort the command and terminate the frame */
+ brcmf_dbg(INFO, "sdio error %d, abort command and terminate frame\n",
+ ret);
+ bus->tx_sderrs++;
- brcmf_sdcard_abort(bus->sdiodev, SDIO_FUNC_2);
- brcmf_sdcard_cfg_write(bus->sdiodev, SDIO_FUNC_1,
- SBSDIO_FUNC1_FRAMECTRL, SFC_WF_TERM,
- NULL);
- bus->f1regdata++;
-
- for (i = 0; i < 3; i++) {
- u8 hi, lo;
- hi = brcmf_sdcard_cfg_read(bus->sdiodev,
- SDIO_FUNC_1,
- SBSDIO_FUNC1_WFRAMEBCHI,
- NULL);
- lo = brcmf_sdcard_cfg_read(bus->sdiodev,
- SDIO_FUNC_1,
- SBSDIO_FUNC1_WFRAMEBCLO,
- NULL);
- bus->f1regdata += 2;
- if ((hi == 0) && (lo == 0))
- break;
- }
+ brcmf_sdcard_abort(bus->sdiodev, SDIO_FUNC_2);
+ brcmf_sdcard_cfg_write(bus->sdiodev, SDIO_FUNC_1,
+ SBSDIO_FUNC1_FRAMECTRL, SFC_WF_TERM,
+ NULL);
+ bus->f1regdata++;
+ for (i = 0; i < 3; i++) {
+ u8 hi, lo;
+ hi = brcmf_sdcard_cfg_read(bus->sdiodev,
+ SDIO_FUNC_1,
+ SBSDIO_FUNC1_WFRAMEBCHI,
+ NULL);
+ lo = brcmf_sdcard_cfg_read(bus->sdiodev,
+ SDIO_FUNC_1,
+ SBSDIO_FUNC1_WFRAMEBCLO,
+ NULL);
+ bus->f1regdata += 2;
+ if ((hi == 0) && (lo == 0))
+ break;
}
- if (ret == 0)
- bus->tx_seq = (bus->tx_seq + 1) % SDPCM_SEQUENCE_WRAP;
- } while ((ret < 0) && retrydata && retries++ < TXRETRIES);
+ }
+ if (ret == 0)
+ bus->tx_seq = (bus->tx_seq + 1) % SDPCM_SEQUENCE_WRAP;
done:
/* restore pkt buffer pointer before calling tx complete routine */
@@ -3259,16 +3239,14 @@ brcmf_sdbrcm_bus_txctl(struct brcmf_bus *bus, unsigned char *msg, uint msglen)
len = (msglen += SDPCM_HDRLEN);
/* Add alignment padding (optional for ctl frames) */
- if (brcmf_alignctl) {
- doff = ((unsigned long)frame % BRCMF_SDALIGN);
- if (doff) {
- frame -= doff;
- len += doff;
- msglen += doff;
- memset(frame, 0, doff + SDPCM_HDRLEN);
- }
- /* precondition: doff < BRCMF_SDALIGN */
+ doff = ((unsigned long)frame % BRCMF_SDALIGN);
+ if (doff) {
+ frame -= doff;
+ len += doff;
+ msglen += doff;
+ memset(frame, 0, doff + SDPCM_HDRLEN);
}
+ /* precondition: doff < BRCMF_SDALIGN */
doff += SDPCM_HDRLEN;
/* Round send length to next SDIO block */
@@ -3281,7 +3259,7 @@ brcmf_sdbrcm_bus_txctl(struct brcmf_bus *bus, unsigned char *msg, uint msglen)
}
/* Satisfy length-alignment requirements */
- if (forcealign && (len & (ALIGNMENT - 1)))
+ if (len & (ALIGNMENT - 1))
len = roundup(len, ALIGNMENT);
/* precondition: IS_ALIGNED((unsigned long)frame, 2) */
@@ -4825,14 +4803,9 @@ void *brcmf_sdbrcm_probe(u16 bus_no, u16 slot, u16 func, uint bustype,
*/
brcmf_txbound = BRCMF_TXBOUND;
brcmf_rxbound = BRCMF_RXBOUND;
- brcmf_alignctl = true;
- brcmf_readahead = true;
- retrydata = false;
brcmf_dongle_memsize = 0;
brcmf_txminmax = BRCMF_TXMINMAX;
- forcealign = true;
-
brcmf_c_init();
brcmf_dbg(TRACE, "Enter\n");
--
1.7.1
--
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