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Message-ID: <20140509145408.GA8544@devel.8.8.4.4>
Date: Fri, 9 May 2014 23:54:08 +0900
From: Daeseok Youn <daeseok.youn@...il.com>
To: gregkh@...uxfoundation.org
Cc: himangi774@...il.com, sachin.kamat@...aro.org, fempsci@...il.com,
nandu.hgowda@...il.com, devel@...verdev.osuosl.org,
linux-kernel@...r.kernel.org, dan.carpenter@...cle.com
Subject: [PATCH 2/5 V2] staging: cxt1e1: remove dead code in musycc.c
Removes "#if 0" blocks.
And the musycc_dump_rxbuffer_ring(ch, 0) which is commented
out puts in RLD_DEBUG block and uncommented.
Because this function may be used for debugging.
Signed-off-by: Daeseok Youn <daeseok.youn@...il.com>
---
V2 : fix the changelog, added a log that musycc_dump_rxbuffer_ring()
is uncommented.
drivers/staging/cxt1e1/musycc.c | 136 ++-------------------------------------
1 files changed, 5 insertions(+), 131 deletions(-)
diff --git a/drivers/staging/cxt1e1/musycc.c b/drivers/staging/cxt1e1/musycc.c
index 2ddf889..91fab77 100644
--- a/drivers/staging/cxt1e1/musycc.c
+++ b/drivers/staging/cxt1e1/musycc.c
@@ -64,7 +64,6 @@ void musycc_update_timeslots(mpi_t *);
/*******************************************************************/
-#if 1
static int
musycc_dump_rxbuffer_ring(mch_t *ch, int lockit)
{
@@ -128,9 +127,7 @@ musycc_dump_rxbuffer_ring(mch_t *ch, int lockit)
spin_unlock_irqrestore(&ch->ch_rxlock, flags);
return 0;
}
-#endif
-#if 1
static int
musycc_dump_txbuffer_ring(mch_t *ch, int lockit)
{
@@ -188,8 +185,6 @@ musycc_dump_txbuffer_ring(mch_t *ch, int lockit)
spin_unlock_irqrestore(&ch->ch_txlock, flags);
return 0;
}
-#endif
-
/*
* The following supports a backdoor debug facility which can be used to
@@ -340,9 +335,6 @@ musycc_wq_chan_restart(void *arg) /* channel private structure */
mch_t *ch;
mpi_t *pi;
struct mdesc *md;
-#if 0
- unsigned long flags;
-#endif
ch = container_of(arg, struct c4_chan_info, ch_work);
pi = ch->up;
@@ -391,22 +383,14 @@ musycc_wq_chan_restart(void *arg) /* channel private structure */
/* find next unprocessed message, then set TX thp to it */
musycc_update_tx_thp(ch);
-#if 0
- spin_lock_irqsave(&ch->ch_txlock, flags);
-#endif
md = ch->txd_irq_srv;
if (!md) {
#ifdef RLD_TRANS_DEBUG
pr_info("-- musycc_wq_chan_restart[%d]: WARNING, starting NULL md\n", ch->channum);
#endif
-#if 0
- spin_unlock_irqrestore(&ch->ch_txlock, flags);
-#endif
} else if (md->data && ((le32_to_cpu(md->status)) & MUSYCC_TX_OWNED)) {
ch->ch_start_tx = 0;
-#if 0
- spin_unlock_irqrestore(&ch->ch_txlock, flags); /* allow interrupts for service request */
-#endif
+
#ifdef RLD_TRANS_DEBUG
pr_info("++ musycc_wq_chan_restart() CHAN TX ACTIVATE: chan %d txd_irq_srv %p = sts %x, txpkt %lu\n",
ch->channum, ch->txd_irq_srv, ch->txd_irq_srv->status, ch->s.tx_packets);
@@ -421,9 +405,6 @@ musycc_wq_chan_restart(void *arg) /* channel private structure */
le32_to_cpu(md->status),
le32_to_cpu(md->data), ch->ch_start_tx);
musycc_dump_txbuffer_ring(ch, 0);
-#if 0
- spin_unlock_irqrestore(&ch->ch_txlock, flags); /* allow interrupts for service request */
-#endif
}
#endif
}
@@ -831,12 +812,6 @@ musycc_bh_tx_eom(mpi_t *pi, int gchan)
mch_t *ch;
struct mdesc *md;
-#if 0
-#ifndef SBE_ISR_INLINE
- unsigned long flags;
-
-#endif
-#endif
volatile u_int32_t status;
ch = pi->chan[gchan];
@@ -849,13 +824,6 @@ musycc_bh_tx_eom(mpi_t *pi, int gchan)
return; /* note: mdt==0 implies a malloc()
* failure w/in chan_up() routine */
-#if 0
-#ifdef SBE_ISR_INLINE
- spin_lock_irq(&ch->ch_txlock);
-#else
- spin_lock_irqsave(&ch->ch_txlock, flags);
-#endif
-#endif
do {
FLUSH_MEM_READ();
md = ch->txd_irq_srv;
@@ -993,13 +961,6 @@ musycc_bh_tx_eom(mpi_t *pi, int gchan)
#endif
FLUSH_MEM_WRITE();
-#if 0
-#ifdef SBE_ISR_INLINE
- spin_unlock_irq(&ch->ch_txlock);
-#else
- spin_unlock_irqrestore(&ch->ch_txlock, flags);
-#endif
-#endif
}
@@ -1181,11 +1142,6 @@ musycc_intr_th_handler(void *devp)
* walking the chain. As the chain is walked, the interrupt will
* eventually be serviced by the correct driver/handler.
*/
-#if 0
- /* chained interrupt = not ours */
- pr_info(">> %s: intCnt NULL, sts %x, possibly a chained interrupt!\n",
- ci->devname, status);
-#endif
return IRQ_NONE;
}
@@ -1360,15 +1316,11 @@ musycc_intr_bh_tasklet(ci_t *ci)
musycc_bh_tx_eom(pi, gchan);
else
musycc_bh_rx_eom(pi, gchan);
-#if 0
- break;
-#else
/*
* MUSYCC Interrupt Descriptor section states that EOB and EOM
* can be combined with the NONE error (as well as others). So
* drop thru to catch this...
*/
-#endif
case EVE_NONE:
if (err == ERR_SHT)
ch->s.rx_length_errors++;
@@ -1444,7 +1396,9 @@ musycc_intr_bh_tasklet(ci_t *ci)
if (cxt1e1_log_level >= LOG_WARN) {
pr_info("%s: RX buffer overflow [ONR] on channel %d, mode %x\n",
ci->devname, ch->channum, ch->p.chan_mode);
- //musycc_dump_rxbuffer_ring (ch, 0); /* RLD DEBUG */
+#ifdef RLD_DEBUG
+ musycc_dump_rxbuffer_ring(ch, 0);
+#endif
}
}
musycc_chan_restart(ch);
@@ -1511,35 +1465,6 @@ musycc_intr_bh_tasklet(ci_t *ci)
/* else, nothing returned */
}
-#if 0
- int __init
-musycc_new_chan(ci_t *ci, int channum, void *user)
-{
- mch_t *ch;
-
- ch = ci->port[channum / MUSYCC_NCHANS].chan[channum % MUSYCC_NCHANS];
-
- if (ch->state != UNASSIGNED)
- return EEXIST;
- /* NOTE: mch_t already cleared during OS_kmalloc() */
- ch->state = DOWN;
- ch->user = user;
-#if 0
- ch->status = 0;
- ch->p.status = 0;
- ch->p.intr_mask = 0;
-#endif
- ch->p.chan_mode = CFG_CH_PROTO_HDLC_FCS16;
- ch->p.idlecode = CFG_CH_FLAG_7E;
- ch->p.pad_fill_count = 2;
- spin_lock_init(&ch->ch_rxlock);
- spin_lock_init(&ch->ch_txlock);
-
- return 0;
-}
-#endif
-
-
#ifdef SBE_PMCC4_ENABLE
status_t
musycc_chan_down(ci_t *dummy, int channum)
@@ -1592,52 +1517,12 @@ musycc_chan_down(ci_t *dummy, int channum)
}
#endif
-
-#if 0
-/* TODO: determine if these functions will not be needed and can be removed */
-int
-musycc_del_chan(ci_t *ci, int channum)
-{
- mch_t *ch;
-
- if ((channum < 0) || (channum >= (MUSYCC_NPORTS * MUSYCC_NCHANS))) /* sanity chk param */
- return ECHRNG;
- ch = sd_find_chan(ci, channum);
- if (!ch)
- return ENOENT;
- if (ch->state == UP)
- musycc_chan_down(ci, channum);
- ch->state = UNASSIGNED;
- return 0;
-}
-
-
-int
-musycc_del_chan_stats(ci_t *ci, int channum)
-{
- mch_t *ch;
-
- if (channum < 0 || channum >= (MUSYCC_NPORTS * MUSYCC_NCHANS)) /* sanity chk param */
- return ECHRNG;
- ch = sd_find_chan(ci, channum);
- if (!ch)
- return ENOENT;
-
- memset(&ch->s, 0, sizeof(struct sbecom_chan_stats));
- return 0;
-}
-#endif
-
-
int
musycc_start_xmit(ci_t *ci, int channum, void *mem_token)
{
mch_t *ch;
struct mdesc *md;
void *m2;
-#if 0
- unsigned long flags;
-#endif
int txd_need_cnt;
u_int32_t len;
@@ -1694,9 +1579,7 @@ musycc_start_xmit(ci_t *ci, int channum, void *mem_token)
OS_mem_token_free(mem_token);
return 0;
}
-#if 0
- spin_lock_irqsave(&ch->ch_txlock, flags);
-#endif
+
/************************************************************/
/** flow control the line if not enough descriptors remain **/
/************************************************************/
@@ -1707,9 +1590,6 @@ musycc_start_xmit(ci_t *ci, int channum, void *mem_token)
ch->tx_full = 1;
ch->txd_required = txd_need_cnt;
sd_disable_xmit(ch->user);
-#if 0
- spin_unlock_irqrestore(&ch->ch_txlock, flags);
-#endif
return -EBUSY; /* tell user to try again later */
}
/**************************************************/
@@ -1748,12 +1628,6 @@ musycc_start_xmit(ci_t *ci, int channum, void *mem_token)
/* last chunk in hdlc mode */
u |= (ch->p.idlecode << IDLE_CODE);
if (ch->p.pad_fill_count) {
-#if 0
- /* NOOP NOTE: u_int8_t cannot be > 0xFF */
- /* sanitize pad_fill_count for maximums allowed by hardware */
- if (ch->p.pad_fill_count > EXTRA_FLAGS_MASK)
- ch->p.pad_fill_count = EXTRA_FLAGS_MASK;
-#endif
u |= (PADFILL_ENABLE | (ch->p.pad_fill_count << EXTRA_FLAGS));
}
md->mem_token = len ? NULL : mem_token; /* Fill in mds on last
--
1.7.1
--
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