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Date: Tue, 28 Jun 2016 17:54:24 -0700
From: Raghu Vatsavayi <rvatsavayi@...iumnetworks.com>
To: <davem@...emloft.net>
CC: <netdev@...r.kernel.org>,
Raghu Vatsavayi <rvatsavayi@...iumnetworks.com>,
Derek Chickles <derek.chickles@...iumnetworks.com>,
Satanand Burla <satananda.burla@...iumnetworks.com>,
Felix Manlunas <felix.manlunas@...iumnetworks.com>,
Raghu Vatsavayi <raghu.vatsavayi@...iumnetworks.com>
Subject: [PATCH net-next 02/10] liquidio: Macro replacements
This patch has minor replacements of ACCESS_ONCE macros with
WRITE_ONCE and replacement of BUG_ON with polite version WARN_ON.
Signed-off-by: Derek Chickles <derek.chickles@...iumnetworks.com>
Signed-off-by: Satanand Burla <satananda.burla@...iumnetworks.com>
Signed-off-by: Felix Manlunas <felix.manlunas@...iumnetworks.com>
Signed-off-by: Raghu Vatsavayi <raghu.vatsavayi@...iumnetworks.com>
---
.../net/ethernet/cavium/liquidio/cn66xx_device.c | 2 +-
drivers/net/ethernet/cavium/liquidio/lio_ethtool.c | 13 +++---
drivers/net/ethernet/cavium/liquidio/lio_main.c | 41 ++++++++++--------
.../net/ethernet/cavium/liquidio/octeon_console.c | 18 ++++----
.../net/ethernet/cavium/liquidio/octeon_device.h | 2 +-
drivers/net/ethernet/cavium/liquidio/octeon_droq.c | 5 +--
drivers/net/ethernet/cavium/liquidio/octeon_droq.h | 3 +-
drivers/net/ethernet/cavium/liquidio/octeon_main.h | 2 +-
.../net/ethernet/cavium/liquidio/octeon_mem_ops.c | 9 ++--
.../net/ethernet/cavium/liquidio/octeon_network.h | 2 +-
.../net/ethernet/cavium/liquidio/request_manager.c | 48 ++++------------------
11 files changed, 58 insertions(+), 87 deletions(-)
diff --git a/drivers/net/ethernet/cavium/liquidio/cn66xx_device.c b/drivers/net/ethernet/cavium/liquidio/cn66xx_device.c
index d35864a..b923c7f 100644
--- a/drivers/net/ethernet/cavium/liquidio/cn66xx_device.c
+++ b/drivers/net/ethernet/cavium/liquidio/cn66xx_device.c
@@ -579,7 +579,7 @@ int lio_cn6xxx_process_droq_intr_regs(struct octeon_device *oct)
continue;
droq = oct->droq[oq_no];
- pkt_count = octeon_droq_check_hw_for_pkts(oct, droq);
+ pkt_count = octeon_droq_check_hw_for_pkts(droq);
if (pkt_count) {
oct->droq_intr |= (1ULL << oq_no);
if (droq->ops.poll_mode) {
diff --git a/drivers/net/ethernet/cavium/liquidio/lio_ethtool.c b/drivers/net/ethernet/cavium/liquidio/lio_ethtool.c
index a060586..81c3b58 100644
--- a/drivers/net/ethernet/cavium/liquidio/lio_ethtool.c
+++ b/drivers/net/ethernet/cavium/liquidio/lio_ethtool.c
@@ -357,9 +357,9 @@ static void octnet_mdio_resp_callback(struct octeon_device *oct,
if (status) {
dev_err(&oct->pci_dev->dev, "MIDO instruction failed. Status: %llx\n",
CVM_CAST64(status));
- ACCESS_ONCE(mdio_cmd_ctx->cond) = -1;
+ WRITE_ONCE(mdio_cmd_ctx->cond, -1);
} else {
- ACCESS_ONCE(mdio_cmd_ctx->cond) = 1;
+ WRITE_ONCE(mdio_cmd_ctx->cond, 1);
}
wake_up_interruptible(&mdio_cmd_ctx->wc);
}
@@ -390,7 +390,7 @@ octnet_mdio45_access(struct lio *lio, int op, int loc, int *value)
mdio_cmd_rsp = (struct oct_mdio_cmd_resp *)sc->virtrptr;
mdio_cmd = (struct oct_mdio_cmd *)sc->virtdptr;
- ACCESS_ONCE(mdio_cmd_ctx->cond) = 0;
+ WRITE_ONCE(mdio_cmd_ctx->cond, 0);
mdio_cmd_ctx->octeon_id = lio_get_device_id(oct_dev);
mdio_cmd->op = op;
mdio_cmd->mdio_addr = loc;
@@ -429,7 +429,7 @@ octnet_mdio45_access(struct lio *lio, int op, int loc, int *value)
octeon_swap_8B_data((u64 *)(&mdio_cmd_rsp->resp),
sizeof(struct oct_mdio_cmd) / 8);
- if (ACCESS_ONCE(mdio_cmd_ctx->cond) == 1) {
+ if (READ_ONCE(mdio_cmd_ctx->cond) == 1) {
if (!op)
*value = mdio_cmd_rsp->resp.value1;
} else {
@@ -623,7 +623,8 @@ lio_get_pauseparam(struct net_device *netdev, struct ethtool_pauseparam *pause)
static void
lio_get_ethtool_stats(struct net_device *netdev,
- struct ethtool_stats *stats, u64 *data)
+ struct ethtool_stats *stats __attribute__((unused)),
+ u64 *data)
{
struct lio *lio = GET_LIO(netdev);
struct octeon_device *oct_dev = lio->oct_dev;
@@ -1552,7 +1553,7 @@ static int lio_nway_reset(struct net_device *netdev)
}
/* Return register dump len. */
-static int lio_get_regs_len(struct net_device *dev)
+static int lio_get_regs_len(struct net_device *dev __attribute__((unused)))
{
return OCT_ETHTOOL_REGDUMP_LEN;
}
diff --git a/drivers/net/ethernet/cavium/liquidio/lio_main.c b/drivers/net/ethernet/cavium/liquidio/lio_main.c
index 9530df8..eda593a 100644
--- a/drivers/net/ethernet/cavium/liquidio/lio_main.c
+++ b/drivers/net/ethernet/cavium/liquidio/lio_main.c
@@ -251,8 +251,7 @@ static int lio_wait_for_oq_pkts(struct octeon_device *oct)
for (i = 0; i < MAX_OCTEON_OUTPUT_QUEUES(oct); i++) {
if (!(oct->io_qmask.oq & (1ULL << i)))
continue;
- pkt_cnt += octeon_droq_check_hw_for_pkts(oct,
- oct->droq[i]);
+ pkt_cnt += octeon_droq_check_hw_for_pkts(oct->droq[i]);
}
if (pkt_cnt > 0) {
pending_pkts += pkt_cnt;
@@ -507,7 +506,8 @@ static pci_ers_result_t liquidio_pcie_error_detected(struct pci_dev *pdev,
* \brief mmio handler
* @param pdev Pointer to PCI device
*/
-static pci_ers_result_t liquidio_pcie_mmio_enabled(struct pci_dev *pdev)
+static pci_ers_result_t liquidio_pcie_mmio_enabled(
+ struct pci_dev *pdev __attribute__((unused)))
{
/* We should never hit this since we never ask for a reset for a Fatal
* Error. We always return DISCONNECT in io_error above.
@@ -523,7 +523,8 @@ static pci_ers_result_t liquidio_pcie_mmio_enabled(struct pci_dev *pdev)
* Restart the card from scratch, as if from a cold-boot. Implementation
* resembles the first-half of the octeon_resume routine.
*/
-static pci_ers_result_t liquidio_pcie_slot_reset(struct pci_dev *pdev)
+static pci_ers_result_t liquidio_pcie_slot_reset(
+ struct pci_dev *pdev __attribute__((unused)))
{
/* We should never hit this since we never ask for a reset for a Fatal
* Error. We always return DISCONNECT in io_error above.
@@ -540,7 +541,7 @@ static pci_ers_result_t liquidio_pcie_slot_reset(struct pci_dev *pdev)
* its OK to resume normal operation. Implementation resembles the
* second-half of the octeon_resume routine.
*/
-static void liquidio_pcie_resume(struct pci_dev *pdev)
+static void liquidio_pcie_resume(struct pci_dev *pdev __attribute__((unused)))
{
/* Nothing to be done here. */
}
@@ -551,7 +552,8 @@ static void liquidio_pcie_resume(struct pci_dev *pdev)
* @param pdev Pointer to PCI device
* @param state state to suspend to
*/
-static int liquidio_suspend(struct pci_dev *pdev, pm_message_t state)
+static int liquidio_suspend(struct pci_dev *pdev __attribute__((unused)),
+ pm_message_t state __attribute__((unused)))
{
return 0;
}
@@ -560,7 +562,7 @@ static int liquidio_suspend(struct pci_dev *pdev, pm_message_t state)
* \brief called when resuming
* @param pdev Pointer to PCI device
*/
-static int liquidio_resume(struct pci_dev *pdev)
+static int liquidio_resume(struct pci_dev *pdev __attribute__((unused)))
{
return 0;
}
@@ -1104,7 +1106,9 @@ static int octeon_setup_interrupt(struct octeon_device *oct)
* @param pdev PCI device structure
* @param ent unused
*/
-static int liquidio_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
+static int
+liquidio_probe(struct pci_dev *pdev,
+ const struct pci_device_id *ent __attribute__((unused)))
{
struct octeon_device *oct_dev = NULL;
struct handshake *hs;
@@ -1724,8 +1728,10 @@ static int liquidio_ptp_settime(struct ptp_clock_info *ptp,
* @param rq request
* @param on is it on
*/
-static int liquidio_ptp_enable(struct ptp_clock_info *ptp,
- struct ptp_clock_request *rq, int on)
+static int
+liquidio_ptp_enable(struct ptp_clock_info *ptp __attribute__((unused)),
+ struct ptp_clock_request *rq __attribute__((unused)),
+ int on __attribute__((unused)))
{
return -EOPNOTSUPP;
}
@@ -1866,7 +1872,7 @@ static int octeon_setup_droq(struct octeon_device *oct, int q_no, int num_descs,
* @param buf pointer to resp structure
*/
static void if_cfg_callback(struct octeon_device *oct,
- u32 status,
+ u32 status __attribute__((unused)),
void *buf)
{
struct octeon_soft_command *sc = (struct octeon_soft_command *)buf;
@@ -1880,7 +1886,7 @@ static void if_cfg_callback(struct octeon_device *oct,
if (resp->status)
dev_err(&oct->pci_dev->dev, "nic if cfg instruction failed. Status: %llx\n",
CVM_CAST64(resp->status));
- ACCESS_ONCE(ctx->cond) = 1;
+ WRITE_ONCE(ctx->cond, 1);
snprintf(oct->fw_info.liquidio_firmware_version, 32, "%s",
resp->cfg_info.liquidio_firmware_version);
@@ -1900,7 +1906,8 @@ static void if_cfg_callback(struct octeon_device *oct,
* @returns selected queue number
*/
static u16 select_q(struct net_device *dev, struct sk_buff *skb,
- void *accel_priv, select_queue_fallback_t fallback)
+ void *accel_priv __attribute__((unused)),
+ select_queue_fallback_t fallback __attribute__((unused)))
{
u32 qindex = 0;
struct lio *lio;
@@ -1920,7 +1927,7 @@ static u16 select_q(struct net_device *dev, struct sk_buff *skb,
* @param arg - farg registered in droq_ops
*/
static void
-liquidio_push_packet(u32 octeon_id,
+liquidio_push_packet(u32 octeon_id __attribute__((unused)),
void *skbuff,
u32 len,
union octeon_rh *rh,
@@ -2717,7 +2724,7 @@ static int liquidio_change_mtu(struct net_device *netdev, int new_mtu)
* @param ifr interface request
* @param cmd command
*/
-static int hwtstamp_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
+static int hwtstamp_ioctl(struct net_device *netdev, struct ifreq *ifr)
{
struct hwtstamp_config conf;
struct lio *lio = GET_LIO(netdev);
@@ -2778,7 +2785,7 @@ static int liquidio_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
{
switch (cmd) {
case SIOCSHWTSTAMP:
- return hwtstamp_ioctl(netdev, ifr, cmd);
+ return hwtstamp_ioctl(netdev, ifr);
default:
return -EOPNOTSUPP;
}
@@ -3560,7 +3567,7 @@ static int setup_nic_devices(struct octeon_device *octeon_dev)
dev_dbg(&octeon_dev->pci_dev->dev,
"requesting config for interface %d, iqs %d, oqs %d\n",
ifidx_or_pfnum, num_iqueues, num_oqueues);
- ACCESS_ONCE(ctx->cond) = 0;
+ WRITE_ONCE(ctx->cond, 0);
ctx->octeon_id = lio_get_device_id(octeon_dev);
init_waitqueue_head(&ctx->wc);
diff --git a/drivers/net/ethernet/cavium/liquidio/octeon_console.c b/drivers/net/ethernet/cavium/liquidio/octeon_console.c
index 466147e..f96a9d6 100644
--- a/drivers/net/ethernet/cavium/liquidio/octeon_console.c
+++ b/drivers/net/ethernet/cavium/liquidio/octeon_console.c
@@ -170,8 +170,8 @@ struct octeon_pci_console_desc {
offsetof(struct cvmx_bootmem_desc, field), \
SIZEOF_FIELD(struct cvmx_bootmem_desc, field))
-#define __cvmx_bootmem_lock(flags)
-#define __cvmx_bootmem_unlock(flags)
+#define __cvmx_bootmem_lock(flags) (flags = flags)
+#define __cvmx_bootmem_unlock(flags) (flags = flags)
/**
* This macro returns a member of the
@@ -440,8 +440,7 @@ int octeon_wait_for_bootloader(struct octeon_device *oct,
}
static void octeon_console_handle_result(struct octeon_device *oct,
- size_t console_num,
- char *buffer, s32 bytes_read)
+ size_t console_num)
{
struct octeon_console *console;
@@ -505,14 +504,11 @@ static void check_console(struct work_struct *work)
*/
bytes_read =
octeon_console_read(oct, console_num, console_buffer,
- sizeof(console_buffer) - 1, 0);
+ sizeof(console_buffer) - 1);
if (bytes_read > 0) {
total_read += bytes_read;
- if (console->waiting) {
- octeon_console_handle_result(oct, console_num,
- console_buffer,
- bytes_read);
- }
+ if (console->waiting)
+ octeon_console_handle_result(oct, console_num);
if (octeon_console_debug_enabled(console_num)) {
output_console_line(oct, console, console_num,
console_buffer, bytes_read);
@@ -676,7 +672,7 @@ static inline int octeon_console_avail_bytes(u32 buffer_size,
}
int octeon_console_read(struct octeon_device *oct, u32 console_num,
- char *buffer, u32 buf_size, u32 flags)
+ char *buffer, u32 buf_size)
{
int bytes_to_read;
u32 rd_idx, wr_idx;
diff --git a/drivers/net/ethernet/cavium/liquidio/octeon_device.h b/drivers/net/ethernet/cavium/liquidio/octeon_device.h
index b4e566d..d477222 100644
--- a/drivers/net/ethernet/cavium/liquidio/octeon_device.h
+++ b/drivers/net/ethernet/cavium/liquidio/octeon_device.h
@@ -586,7 +586,7 @@ int octeon_console_write(struct octeon_device *oct, u32 console_num,
char *buffer, u32 write_request_size, u32 flags);
int octeon_console_write_avail(struct octeon_device *oct, u32 console_num);
int octeon_console_read(struct octeon_device *oct, u32 console_num,
- char *buffer, u32 buf_size, u32 flags);
+ char *buffer, u32 buf_size);
int octeon_console_read_avail(struct octeon_device *oct, u32 console_num);
/** Removes all attached consoles. */
diff --git a/drivers/net/ethernet/cavium/liquidio/octeon_droq.c b/drivers/net/ethernet/cavium/liquidio/octeon_droq.c
index d9bb2f7..d37a314 100644
--- a/drivers/net/ethernet/cavium/liquidio/octeon_droq.c
+++ b/drivers/net/ethernet/cavium/liquidio/octeon_droq.c
@@ -104,8 +104,7 @@ static inline void *octeon_get_dispatch_arg(struct octeon_device *octeon_dev,
return fn_arg;
}
-u32 octeon_droq_check_hw_for_pkts(struct octeon_device *oct,
- struct octeon_droq *droq)
+u32 octeon_droq_check_hw_for_pkts(struct octeon_droq *droq)
{
u32 pkt_count = 0;
@@ -810,7 +809,7 @@ octeon_droq_process_poll_pkts(struct octeon_device *oct,
total_pkts_processed += pkts_processed;
- octeon_droq_check_hw_for_pkts(oct, droq);
+ octeon_droq_check_hw_for_pkts(droq);
}
spin_unlock(&droq->lock);
diff --git a/drivers/net/ethernet/cavium/liquidio/octeon_droq.h b/drivers/net/ethernet/cavium/liquidio/octeon_droq.h
index 886772c..78a411c 100644
--- a/drivers/net/ethernet/cavium/liquidio/octeon_droq.h
+++ b/drivers/net/ethernet/cavium/liquidio/octeon_droq.h
@@ -432,8 +432,7 @@ int octeon_unregister_dispatch_fn(struct octeon_device *oct,
void octeon_droq_print_stats(void);
-u32 octeon_droq_check_hw_for_pkts(struct octeon_device *oct,
- struct octeon_droq *droq);
+u32 octeon_droq_check_hw_for_pkts(struct octeon_droq *droq);
int octeon_create_droq(struct octeon_device *oct, u32 q_no,
u32 num_descs, u32 desc_size, void *app_ctx);
diff --git a/drivers/net/ethernet/cavium/liquidio/octeon_main.h b/drivers/net/ethernet/cavium/liquidio/octeon_main.h
index 0ff3efc..bc14e4c 100644
--- a/drivers/net/ethernet/cavium/liquidio/octeon_main.h
+++ b/drivers/net/ethernet/cavium/liquidio/octeon_main.h
@@ -174,7 +174,7 @@ sleep_cond(wait_queue_head_t *wait_queue, int *condition)
init_waitqueue_entry(&we, current);
add_wait_queue(wait_queue, &we);
- while (!(ACCESS_ONCE(*condition))) {
+ while (!(READ_ONCE(*condition))) {
set_current_state(TASK_INTERRUPTIBLE);
if (signal_pending(current))
goto out;
diff --git a/drivers/net/ethernet/cavium/liquidio/octeon_mem_ops.c b/drivers/net/ethernet/cavium/liquidio/octeon_mem_ops.c
index 5aecef8..39c07e9 100644
--- a/drivers/net/ethernet/cavium/liquidio/octeon_mem_ops.c
+++ b/drivers/net/ethernet/cavium/liquidio/octeon_mem_ops.c
@@ -44,18 +44,19 @@
#define MEMOPS_IDX MAX_BAR1_MAP_INDEX
+#ifdef __BIG_ENDIAN_BITFIELD
static inline void
-octeon_toggle_bar1_swapmode(struct octeon_device *oct __attribute__((unused)),
- u32 idx __attribute__((unused)))
+octeon_toggle_bar1_swapmode(struct octeon_device *oct, u32 idx)
{
-#ifdef __BIG_ENDIAN_BITFIELD
u32 mask;
mask = oct->fn_list.bar1_idx_read(oct, idx);
mask = (mask & 0x2) ? (mask & ~2) : (mask | 2);
oct->fn_list.bar1_idx_write(oct, idx, mask);
-#endif
}
+#else
+#define octeon_toggle_bar1_swapmode(oct, idx)
+#endif
static void
octeon_pci_fastwrite(struct octeon_device *oct, u8 __iomem *mapped_addr,
diff --git a/drivers/net/ethernet/cavium/liquidio/octeon_network.h b/drivers/net/ethernet/cavium/liquidio/octeon_network.h
index d0581e6..4489fc4 100644
--- a/drivers/net/ethernet/cavium/liquidio/octeon_network.h
+++ b/drivers/net/ethernet/cavium/liquidio/octeon_network.h
@@ -359,7 +359,7 @@ lio_map_ring_info(struct octeon_droq *droq, u32 i)
dma_addr = dma_map_single(&oct->pci_dev->dev, &droq->info_list[i],
OCT_DROQ_INFO_SIZE, DMA_FROM_DEVICE);
- BUG_ON(dma_mapping_error(&oct->pci_dev->dev, dma_addr));
+ WARN_ON(dma_mapping_error(&oct->pci_dev->dev, dma_addr));
return (u64)dma_addr;
}
diff --git a/drivers/net/ethernet/cavium/liquidio/request_manager.c b/drivers/net/ethernet/cavium/liquidio/request_manager.c
index 7eafa75..8c82ccf 100644
--- a/drivers/net/ethernet/cavium/liquidio/request_manager.c
+++ b/drivers/net/ethernet/cavium/liquidio/request_manager.c
@@ -301,40 +301,8 @@ static inline void __copy_cmd_into_iq(struct octeon_instr_queue *iq,
memcpy(iqptr, cmd, cmdsize);
}
-static inline int
-__post_command(struct octeon_device *octeon_dev __attribute__((unused)),
- struct octeon_instr_queue *iq,
- u32 force_db __attribute__((unused)), u8 *cmd)
-{
- u32 index = -1;
-
- /* This ensures that the read index does not wrap around to the same
- * position if queue gets full before Octeon could fetch any instr.
- */
- if (atomic_read(&iq->instr_pending) >= (s32)(iq->max_count - 1))
- return -1;
-
- __copy_cmd_into_iq(iq, cmd);
-
- /* "index" is returned, host_write_index is modified. */
- index = iq->host_write_index;
- INCR_INDEX_BY1(iq->host_write_index, iq->max_count);
- iq->fill_cnt++;
-
- /* Flush the command into memory. We need to be sure the data is in
- * memory before indicating that the instruction is pending.
- */
- wmb();
-
- atomic_inc(&iq->instr_pending);
-
- return index;
-}
-
static inline struct iq_post_status
-__post_command2(struct octeon_device *octeon_dev __attribute__((unused)),
- struct octeon_instr_queue *iq,
- u32 force_db __attribute__((unused)), u8 *cmd)
+__post_command2(struct octeon_instr_queue *iq, u8 *cmd)
{
struct iq_post_status st;
@@ -579,7 +547,7 @@ octeon_send_command(struct octeon_device *oct, u32 iq_no,
*/
spin_lock_bh(&iq->post_lock);
- st = __post_command2(oct, iq, force_db, cmd);
+ st = __post_command2(iq, cmd);
if (st.status != IQ_SEND_FAILED) {
octeon_report_sent_bytes_to_bql(buf, reqtype);
@@ -618,8 +586,8 @@ octeon_prepare_soft_command(struct octeon_device *oct,
struct octeon_instr_irh *irh;
struct octeon_instr_rdp *rdp;
- BUG_ON(opcode > 15);
- BUG_ON(subcode > 127);
+ WARN_ON(opcode > 15);
+ WARN_ON(subcode > 127);
oct_cfg = octeon_get_conf(oct);
@@ -671,8 +639,8 @@ int octeon_send_soft_command(struct octeon_device *oct,
}
irh = (struct octeon_instr_irh *)&sc->cmd.cmd2.irh;
if (irh->rflag) {
- BUG_ON(!sc->dmarptr);
- BUG_ON(!sc->status_word);
+ WARN_ON(!sc->dmarptr);
+ WARN_ON(!sc->status_word);
*sc->status_word = COMPLETION_WORD_INIT;
rdp = (struct octeon_instr_rdp *)&sc->cmd.cmd2.rdp;
@@ -748,7 +716,7 @@ struct octeon_soft_command *octeon_alloc_soft_command(struct octeon_device *oct,
struct octeon_soft_command *sc = NULL;
struct list_head *tmp;
- BUG_ON((offset + datasize + rdatasize + ctxsize) >
+ WARN_ON((offset + datasize + rdatasize + ctxsize) >
SOFT_COMMAND_BUFFER_SIZE);
spin_lock(&oct->sc_buf_pool.lock);
@@ -795,7 +763,7 @@ struct octeon_soft_command *octeon_alloc_soft_command(struct octeon_device *oct,
offset = (offset + datasize + 127) & 0xffffff80;
if (rdatasize) {
- BUG_ON(rdatasize < 16);
+ WARN_ON(rdatasize < 16);
sc->virtrptr = (u8 *)sc + offset;
sc->dmarptr = dma_addr + offset;
sc->rdatasize = rdatasize;
--
1.8.3.1
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