[PATCH v3 15/30] staging: unisys: visorbus: Remove unused functions
From: David Kershner
Date: Sat Jun 04 2016 - 13:29:21 EST
From: Bryan Thompson <bryan.thompson@xxxxxxxxxx>
Remove visorbus_clear_channel, visorchannel_signalqueue_slots_avail,
visorchannel_signalqueue_max_slots, visorchannel_clear, and
visorchannel_debug which are no longer called by any driver.
Signed-off-by: Bryan Thompson <bryan.thompson@xxxxxxxxxx>
Signed-off-by: David Kershner <david.kershner@xxxxxxxxxx>
Reviewed-by: Tim Sell <Timothy.Sell@xxxxxxxxxx>
---
drivers/staging/unisys/include/visorbus.h | 9 --
drivers/staging/unisys/visorbus/visorbus_main.c | 7 --
drivers/staging/unisys/visorbus/visorchannel.c | 161 ------------------------
3 files changed, 177 deletions(-)
diff --git a/drivers/staging/unisys/include/visorbus.h b/drivers/staging/unisys/include/visorbus.h
index 3ba01cf..cbe240a 100644
--- a/drivers/staging/unisys/include/visorbus.h
+++ b/drivers/staging/unisys/include/visorbus.h
@@ -185,8 +185,6 @@ int visorbus_read_channel(struct visor_device *dev,
int visorbus_write_channel(struct visor_device *dev,
unsigned long offset, void *src,
unsigned long nbytes);
-int visorbus_clear_channel(struct visor_device *dev,
- unsigned long offset, u8 ch, unsigned long nbytes);
void visorbus_enable_channel_interrupts(struct visor_device *dev);
void visorbus_disable_channel_interrupts(struct visor_device *dev);
#endif
@@ -206,17 +204,12 @@ int visorchannel_read(struct visorchannel *channel, ulong offset,
void *local, ulong nbytes);
int visorchannel_write(struct visorchannel *channel, ulong offset,
void *local, ulong nbytes);
-int visorchannel_clear(struct visorchannel *channel, ulong offset,
- u8 ch, ulong nbytes);
bool visorchannel_signalremove(struct visorchannel *channel, u32 queue,
void *msg);
bool visorchannel_signalinsert(struct visorchannel *channel, u32 queue,
void *msg);
bool visorchannel_signalempty(struct visorchannel *channel, u32 queue);
-int visorchannel_signalqueue_slots_avail(struct visorchannel *channel,
- u32 queue);
-int visorchannel_signalqueue_max_slots(struct visorchannel *channel, u32 queue);
u64 visorchannel_get_physaddr(struct visorchannel *channel);
ulong visorchannel_get_nbytes(struct visorchannel *channel);
char *visorchannel_id(struct visorchannel *channel, char *s);
@@ -226,8 +219,6 @@ int visorchannel_set_clientpartition(struct visorchannel *channel,
u64 partition_handle);
uuid_le visorchannel_get_uuid(struct visorchannel *channel);
char *visorchannel_uuid_id(uuid_le *guid, char *s);
-void visorchannel_debug(struct visorchannel *channel, int num_queues,
- struct seq_file *seq, u32 off);
void __iomem *visorchannel_get_header(struct visorchannel *channel);
#define BUS_ROOT_DEVICE UINT_MAX
diff --git a/drivers/staging/unisys/visorbus/visorbus_main.c b/drivers/staging/unisys/visorbus/visorbus_main.c
index f7f5986..8c1754f9 100644
--- a/drivers/staging/unisys/visorbus/visorbus_main.c
+++ b/drivers/staging/unisys/visorbus/visorbus_main.c
@@ -715,13 +715,6 @@ visorbus_write_channel(struct visor_device *dev, unsigned long offset,
}
EXPORT_SYMBOL_GPL(visorbus_write_channel);
-int
-visorbus_clear_channel(struct visor_device *dev, unsigned long offset, u8 ch,
- unsigned long nbytes)
-{
- return visorchannel_clear(dev->visorchannel, offset, ch, nbytes);
-}
-
/** We don't really have a real interrupt, so for now we just call the
* interrupt function periodically...
*/
diff --git a/drivers/staging/unisys/visorbus/visorchannel.c b/drivers/staging/unisys/visorbus/visorchannel.c
index 1f626c3..43315c2 100644
--- a/drivers/staging/unisys/visorbus/visorchannel.c
+++ b/drivers/staging/unisys/visorbus/visorchannel.c
@@ -255,41 +255,6 @@ visorchannel_write(struct visorchannel *channel, ulong offset,
return 0;
}
-int
-visorchannel_clear(struct visorchannel *channel, ulong offset, u8 ch,
- ulong nbytes)
-{
- int err;
- int bufsize = PAGE_SIZE;
- int written = 0;
- u8 *buf;
-
- buf = (u8 *)__get_free_page(GFP_KERNEL);
- if (!buf)
- return -ENOMEM;
-
- memset(buf, ch, bufsize);
-
- while (nbytes > 0) {
- int thisbytes = bufsize;
-
- if (nbytes < thisbytes)
- thisbytes = nbytes;
- err = visorchannel_write(channel, offset + written,
- buf, thisbytes);
- if (err)
- goto out_free_page;
-
- written += thisbytes;
- nbytes -= thisbytes;
- }
- err = 0;
-
-out_free_page:
- free_page((unsigned long)buf);
- return err;
-}
-
void __iomem *
visorchannel_get_header(struct visorchannel *channel)
{
@@ -490,129 +455,3 @@ visorchannel_signalinsert(struct visorchannel *channel, u32 queue, void *msg)
return rc;
}
EXPORT_SYMBOL_GPL(visorchannel_signalinsert);
-
-int
-visorchannel_signalqueue_slots_avail(struct visorchannel *channel, u32 queue)
-{
- struct signal_queue_header sig_hdr;
- u32 slots_avail, slots_used;
- u32 head, tail;
-
- if (!sig_read_header(channel, queue, &sig_hdr))
- return 0;
- head = sig_hdr.head;
- tail = sig_hdr.tail;
- if (head < tail)
- head = head + sig_hdr.max_slots;
- slots_used = head - tail;
- slots_avail = sig_hdr.max_signals - slots_used;
- return (int)slots_avail;
-}
-
-int
-visorchannel_signalqueue_max_slots(struct visorchannel *channel, u32 queue)
-{
- struct signal_queue_header sig_hdr;
-
- if (!sig_read_header(channel, queue, &sig_hdr))
- return 0;
- return (int)sig_hdr.max_signals;
-}
-
-static void
-sigqueue_debug(struct signal_queue_header *q, int which, struct seq_file *seq)
-{
- seq_printf(seq, "Signal Queue #%d\n", which);
- seq_printf(seq, " VersionId = %lu\n", (ulong)q->version);
- seq_printf(seq, " Type = %lu\n", (ulong)q->chtype);
- seq_printf(seq, " oSignalBase = %llu\n",
- (long long)q->sig_base_offset);
- seq_printf(seq, " SignalSize = %lu\n", (ulong)q->signal_size);
- seq_printf(seq, " MaxSignalSlots = %lu\n",
- (ulong)q->max_slots);
- seq_printf(seq, " MaxSignals = %lu\n", (ulong)q->max_signals);
- seq_printf(seq, " FeatureFlags = %-16.16Lx\n",
- (long long)q->features);
- seq_printf(seq, " NumSignalsSent = %llu\n",
- (long long)q->num_sent);
- seq_printf(seq, " NumSignalsReceived = %llu\n",
- (long long)q->num_received);
- seq_printf(seq, " NumOverflows = %llu\n",
- (long long)q->num_overflows);
- seq_printf(seq, " Head = %lu\n", (ulong)q->head);
- seq_printf(seq, " Tail = %lu\n", (ulong)q->tail);
-}
-
-void
-visorchannel_debug(struct visorchannel *channel, int num_queues,
- struct seq_file *seq, u32 off)
-{
- u64 addr = 0;
- ulong nbytes = 0, nbytes_region = 0;
- struct channel_header hdr;
- struct channel_header *phdr = &hdr;
- int i = 0;
- int errcode = 0;
-
- if (!channel)
- return;
-
- addr = visorchannel_get_physaddr(channel);
- nbytes_region = visorchannel_get_nbytes(channel);
- errcode = visorchannel_read(channel, off,
- phdr, sizeof(struct channel_header));
- if (errcode < 0) {
- seq_printf(seq,
- "Read of channel header failed with errcode=%d)\n",
- errcode);
- if (off == 0) {
- phdr = &channel->chan_hdr;
- seq_puts(seq, "(following data may be stale)\n");
- } else {
- return;
- }
- }
- nbytes = (ulong)(phdr->size);
- seq_printf(seq, "--- Begin channel @0x%-16.16Lx for 0x%lx bytes (region=0x%lx bytes) ---\n",
- addr + off, nbytes, nbytes_region);
- seq_printf(seq, "Type = %pUL\n", &phdr->chtype);
- seq_printf(seq, "ZoneGuid = %pUL\n", &phdr->zone_uuid);
- seq_printf(seq, "Signature = 0x%-16.16Lx\n",
- (long long)phdr->signature);
- seq_printf(seq, "LegacyState = %lu\n", (ulong)phdr->legacy_state);
- seq_printf(seq, "SrvState = %lu\n", (ulong)phdr->srv_state);
- seq_printf(seq, "CliStateBoot = %lu\n", (ulong)phdr->cli_state_boot);
- seq_printf(seq, "CliStateOS = %lu\n", (ulong)phdr->cli_state_os);
- seq_printf(seq, "HeaderSize = %lu\n", (ulong)phdr->header_size);
- seq_printf(seq, "Size = %llu\n", (long long)phdr->size);
- seq_printf(seq, "Features = 0x%-16.16llx\n",
- (long long)phdr->features);
- seq_printf(seq, "PartitionHandle = 0x%-16.16llx\n",
- (long long)phdr->partition_handle);
- seq_printf(seq, "Handle = 0x%-16.16llx\n",
- (long long)phdr->handle);
- seq_printf(seq, "VersionId = %lu\n", (ulong)phdr->version_id);
- seq_printf(seq, "oChannelSpace = %llu\n",
- (long long)phdr->ch_space_offset);
- if ((phdr->ch_space_offset == 0) || (errcode < 0))
- ;
- else
- for (i = 0; i < num_queues; i++) {
- struct signal_queue_header q;
-
- errcode = visorchannel_read(channel,
- off +
- phdr->ch_space_offset +
- (i * sizeof(q)),
- &q, sizeof(q));
- if (errcode < 0) {
- seq_printf(seq,
- "failed to read signal queue #%d from channel @0x%-16.16Lx errcode=%d\n",
- i, addr, errcode);
- continue;
- }
- sigqueue_debug(&q, i, seq);
- }
- seq_printf(seq, "--- End channel @0x%-16.16Lx for 0x%lx bytes ---\n",
- addr + off, nbytes);
-}
--
1.9.1