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* [PATCH 0/6] staging: Remove a bounch set of set but not used variables
@ 2019-10-08  5:38 zhengbin
  2019-10-08  5:38 ` [PATCH 1/6] staging: bcm2835-audio: Remove set but not used variable 'status' zhengbin
                   ` (5 more replies)
  0 siblings, 6 replies; 10+ messages in thread
From: zhengbin @ 2019-10-08  5:38 UTC (permalink / raw)
  To: gregkh, eric, wahrenst, abbotti, hsweeten, devel; +Cc: zhengbin13

zhengbin (6):
  staging: bcm2835-audio: Remove set but not used variable 'status'
  staging: sm750fb: Remove set but not used variable 'uiActualPixelClk'
  staging: sm750fb: Remove set but not used variable 'actual_mx_clk'
  staging: comedi: Remove set but not used variable 'data'
  staging: comedi: Remove set but not used variable 'hi'
  staging: comedi: Remove set but not used variable 'aref'

 drivers/staging/comedi/drivers/dt2814.c                     | 3 ---
 drivers/staging/comedi/drivers/dt2815.c                     | 3 +--
 drivers/staging/comedi/drivers/dt3000.c                     | 3 +--
 drivers/staging/sm750fb/ddk750_chip.c                       | 3 +--
 drivers/staging/sm750fb/ddk750_mode.c                       | 3 +--
 drivers/staging/vc04_services/bcm2835-audio/bcm2835-vchiq.c | 5 ++---
 6 files changed, 6 insertions(+), 14 deletions(-)

--
2.7.4

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^ permalink raw reply	[flat|nested] 10+ messages in thread

* [PATCH 1/6] staging: bcm2835-audio: Remove set but not used variable 'status'
  2019-10-08  5:38 [PATCH 0/6] staging: Remove a bounch set of set but not used variables zhengbin
@ 2019-10-08  5:38 ` zhengbin
  2019-10-08  6:04   ` Dan Carpenter
  2019-10-08  5:38 ` [PATCH 2/6] staging: sm750fb: Remove set but not used variable 'uiActualPixelClk' zhengbin
                   ` (4 subsequent siblings)
  5 siblings, 1 reply; 10+ messages in thread
From: zhengbin @ 2019-10-08  5:38 UTC (permalink / raw)
  To: gregkh, eric, wahrenst, abbotti, hsweeten, devel; +Cc: zhengbin13

Fixes gcc '-Wunused-but-set-variable' warning:

drivers/staging/vc04_services/bcm2835-audio/bcm2835-vchiq.c: In function audio_vchi_callback:
drivers/staging/vc04_services/bcm2835-audio/bcm2835-vchiq.c:99:6: warning: variable status set but not used [-Wunused-but-set-variable]

It is not used since commit 23b028c871e1 ("staging:
bcm2835-audio: initial staging submission")

Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: zhengbin <zhengbin13@huawei.com>
---
 drivers/staging/vc04_services/bcm2835-audio/bcm2835-vchiq.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/drivers/staging/vc04_services/bcm2835-audio/bcm2835-vchiq.c b/drivers/staging/vc04_services/bcm2835-audio/bcm2835-vchiq.c
index c6f9cf1..8a94c5b 100644
--- a/drivers/staging/vc04_services/bcm2835-audio/bcm2835-vchiq.c
+++ b/drivers/staging/vc04_services/bcm2835-audio/bcm2835-vchiq.c
@@ -96,13 +96,12 @@ static void audio_vchi_callback(void *param,
 	struct bcm2835_audio_instance *instance = param;
 	struct vc_audio_msg m;
 	int msg_len;
-	int status;

 	if (reason != VCHI_CALLBACK_MSG_AVAILABLE)
 		return;

-	status = vchi_msg_dequeue(instance->vchi_handle,
-				  &m, sizeof(m), &msg_len, VCHI_FLAGS_NONE);
+	vchi_msg_dequeue(instance->vchi_handle,
+			 &m, sizeof(m), &msg_len, VCHI_FLAGS_NONE);
 	if (m.type == VC_AUDIO_MSG_TYPE_RESULT) {
 		instance->result = m.result.success;
 		complete(&instance->msg_avail_comp);
--
2.7.4

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^ permalink raw reply	[flat|nested] 10+ messages in thread

* [PATCH 2/6] staging: sm750fb: Remove set but not used variable 'uiActualPixelClk'
  2019-10-08  5:38 [PATCH 0/6] staging: Remove a bounch set of set but not used variables zhengbin
  2019-10-08  5:38 ` [PATCH 1/6] staging: bcm2835-audio: Remove set but not used variable 'status' zhengbin
@ 2019-10-08  5:38 ` zhengbin
  2019-10-08  6:06   ` Dan Carpenter
  2019-10-08  5:38 ` [PATCH 3/6] staging: sm750fb: Remove set but not used variable 'actual_mx_clk' zhengbin
                   ` (3 subsequent siblings)
  5 siblings, 1 reply; 10+ messages in thread
From: zhengbin @ 2019-10-08  5:38 UTC (permalink / raw)
  To: gregkh, eric, wahrenst, abbotti, hsweeten, devel; +Cc: zhengbin13

Fixes gcc '-Wunused-but-set-variable' warning:

drivers/staging/sm750fb/ddk750_mode.c: In function ddk750_setModeTiming:
drivers/staging/sm750fb/ddk750_mode.c:212:15: warning: variable uiActualPixelClk set but not used [-Wunused-but-set-variable]

It is not used since commit 81dee67e215b ("staging:
sm750fb: add sm750 to staging")

Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: zhengbin <zhengbin13@huawei.com>
---
 drivers/staging/sm750fb/ddk750_mode.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/staging/sm750fb/ddk750_mode.c b/drivers/staging/sm750fb/ddk750_mode.c
index 9722692..e0230f4 100644
--- a/drivers/staging/sm750fb/ddk750_mode.c
+++ b/drivers/staging/sm750fb/ddk750_mode.c
@@ -209,12 +209,11 @@ static int programModeRegisters(struct mode_parameter *pModeParam,
 int ddk750_setModeTiming(struct mode_parameter *parm, enum clock_type clock)
 {
 	struct pll_value pll;
-	unsigned int uiActualPixelClk;

 	pll.input_freq = DEFAULT_INPUT_CLOCK;
 	pll.clock_type = clock;

-	uiActualPixelClk = sm750_calc_pll_value(parm->pixel_clock, &pll);
+	sm750_calc_pll_value(parm->pixel_clock, &pll);
 	if (sm750_get_chip_type() == SM750LE) {
 		/* set graphic mode via IO method */
 		outb_p(0x88, 0x3d4);
--
2.7.4

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^ permalink raw reply	[flat|nested] 10+ messages in thread

* [PATCH 3/6] staging: sm750fb: Remove set but not used variable 'actual_mx_clk'
  2019-10-08  5:38 [PATCH 0/6] staging: Remove a bounch set of set but not used variables zhengbin
  2019-10-08  5:38 ` [PATCH 1/6] staging: bcm2835-audio: Remove set but not used variable 'status' zhengbin
  2019-10-08  5:38 ` [PATCH 2/6] staging: sm750fb: Remove set but not used variable 'uiActualPixelClk' zhengbin
@ 2019-10-08  5:38 ` zhengbin
  2019-10-08  5:39 ` [PATCH 4/6] staging: comedi: Remove set but not used variable 'data' zhengbin
                   ` (2 subsequent siblings)
  5 siblings, 0 replies; 10+ messages in thread
From: zhengbin @ 2019-10-08  5:38 UTC (permalink / raw)
  To: gregkh, eric, wahrenst, abbotti, hsweeten, devel; +Cc: zhengbin13

Fixes gcc '-Wunused-but-set-variable' warning:

drivers/staging/sm750fb/ddk750_chip.c: In function set_chip_clock:
drivers/staging/sm750fb/ddk750_chip.c:59:15: warning: variable actual_mx_clk set but not used [-Wunused-but-set-variable]

It is not used since commit f0977109a577 ("staging:
sm750fb: lower case to fix camelcase checkpatch warning")

Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: zhengbin <zhengbin13@huawei.com>
---
 drivers/staging/sm750fb/ddk750_chip.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/staging/sm750fb/ddk750_chip.c b/drivers/staging/sm750fb/ddk750_chip.c
index e5988813..02860d3 100644
--- a/drivers/staging/sm750fb/ddk750_chip.c
+++ b/drivers/staging/sm750fb/ddk750_chip.c
@@ -56,7 +56,6 @@ static unsigned int get_mxclk_freq(void)
 static void set_chip_clock(unsigned int frequency)
 {
 	struct pll_value pll;
-	unsigned int actual_mx_clk;

 	/* Cheok_0509: For SM750LE, the chip clock is fixed. Nothing to set. */
 	if (sm750_get_chip_type() == SM750LE)
@@ -76,7 +75,7 @@ static void set_chip_clock(unsigned int frequency)
 		 * Return value of sm750_calc_pll_value gives the actual
 		 * possible clock.
 		 */
-		actual_mx_clk = sm750_calc_pll_value(frequency, &pll);
+		sm750_calc_pll_value(frequency, &pll);

 		/* Master Clock Control: MXCLK_PLL */
 		poke32(MXCLK_PLL_CTRL, sm750_format_pll_reg(&pll));
--
2.7.4

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^ permalink raw reply	[flat|nested] 10+ messages in thread

* [PATCH 4/6] staging: comedi: Remove set but not used variable 'data'
  2019-10-08  5:38 [PATCH 0/6] staging: Remove a bounch set of set but not used variables zhengbin
                   ` (2 preceding siblings ...)
  2019-10-08  5:38 ` [PATCH 3/6] staging: sm750fb: Remove set but not used variable 'actual_mx_clk' zhengbin
@ 2019-10-08  5:39 ` zhengbin
  2019-10-08  5:39 ` [PATCH 5/6] staging: comedi: Remove set but not used variable 'hi' zhengbin
  2019-10-08  5:39 ` [PATCH 6/6] staging: comedi: Remove set but not used variable 'aref' zhengbin
  5 siblings, 0 replies; 10+ messages in thread
From: zhengbin @ 2019-10-08  5:39 UTC (permalink / raw)
  To: gregkh, eric, wahrenst, abbotti, hsweeten, devel; +Cc: zhengbin13

Fixes gcc '-Wunused-but-set-variable' warning:

drivers/staging/comedi/drivers/dt2814.c: In function dt2814_interrupt:
drivers/staging/comedi/drivers/dt2814.c:193:6: warning: variable data set but not used [-Wunused-but-set-variable]

It is not used since commit 7806012e97ed ("staging:
comedi: refactor dt2814 driver and use module_comedi_driver")

Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: zhengbin <zhengbin13@huawei.com>
---
 drivers/staging/comedi/drivers/dt2814.c | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/drivers/staging/comedi/drivers/dt2814.c b/drivers/staging/comedi/drivers/dt2814.c
index d2c7157..4825168 100644
--- a/drivers/staging/comedi/drivers/dt2814.c
+++ b/drivers/staging/comedi/drivers/dt2814.c
@@ -190,7 +190,6 @@ static irqreturn_t dt2814_interrupt(int irq, void *d)
 	struct comedi_device *dev = d;
 	struct dt2814_private *devpriv = dev->private;
 	struct comedi_subdevice *s = dev->read_subdev;
-	int data;

 	if (!dev->attached) {
 		dev_err(dev->class_dev, "spurious interrupt\n");
@@ -200,8 +199,6 @@ static irqreturn_t dt2814_interrupt(int irq, void *d)
 	hi = inb(dev->iobase + DT2814_DATA);
 	lo = inb(dev->iobase + DT2814_DATA);

-	data = (hi << 4) | (lo >> 4);
-
 	if (!(--devpriv->ntrig)) {
 		int i;

--
2.7.4

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^ permalink raw reply	[flat|nested] 10+ messages in thread

* [PATCH 5/6] staging: comedi: Remove set but not used variable 'hi'
  2019-10-08  5:38 [PATCH 0/6] staging: Remove a bounch set of set but not used variables zhengbin
                   ` (3 preceding siblings ...)
  2019-10-08  5:39 ` [PATCH 4/6] staging: comedi: Remove set but not used variable 'data' zhengbin
@ 2019-10-08  5:39 ` zhengbin
  2019-10-08  5:39 ` [PATCH 6/6] staging: comedi: Remove set but not used variable 'aref' zhengbin
  5 siblings, 0 replies; 10+ messages in thread
From: zhengbin @ 2019-10-08  5:39 UTC (permalink / raw)
  To: gregkh, eric, wahrenst, abbotti, hsweeten, devel; +Cc: zhengbin13

Fixes gcc '-Wunused-but-set-variable' warning:

drivers/staging/comedi/drivers/dt2815.c: In function dt2815_ao_insn:
drivers/staging/comedi/drivers/dt2815.c:91:19: warning: variable hi set but not used [-Wunused-but-set-variable]

It is not used since commit d6a929b7608a ("Staging:
comedi: add dt2815 driver")

Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: zhengbin <zhengbin13@huawei.com>
---
 drivers/staging/comedi/drivers/dt2815.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/staging/comedi/drivers/dt2815.c b/drivers/staging/comedi/drivers/dt2815.c
index 83026ba..bcf85ec 100644
--- a/drivers/staging/comedi/drivers/dt2815.c
+++ b/drivers/staging/comedi/drivers/dt2815.c
@@ -88,12 +88,11 @@ static int dt2815_ao_insn(struct comedi_device *dev, struct comedi_subdevice *s,
 	struct dt2815_private *devpriv = dev->private;
 	int i;
 	int chan = CR_CHAN(insn->chanspec);
-	unsigned int lo, hi;
+	unsigned int lo;
 	int ret;

 	for (i = 0; i < insn->n; i++) {
 		lo = ((data[i] & 0x0f) << 4) | (chan << 1) | 0x01;
-		hi = (data[i] & 0xff0) >> 4;

 		ret = comedi_timeout(dev, s, insn, dt2815_ao_status, 0x00);
 		if (ret)
--
2.7.4

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^ permalink raw reply	[flat|nested] 10+ messages in thread

* [PATCH 6/6] staging: comedi: Remove set but not used variable 'aref'
  2019-10-08  5:38 [PATCH 0/6] staging: Remove a bounch set of set but not used variables zhengbin
                   ` (4 preceding siblings ...)
  2019-10-08  5:39 ` [PATCH 5/6] staging: comedi: Remove set but not used variable 'hi' zhengbin
@ 2019-10-08  5:39 ` zhengbin
  5 siblings, 0 replies; 10+ messages in thread
From: zhengbin @ 2019-10-08  5:39 UTC (permalink / raw)
  To: gregkh, eric, wahrenst, abbotti, hsweeten, devel; +Cc: zhengbin13

Fixes gcc '-Wunused-but-set-variable' warning:

drivers/staging/comedi/drivers/dt3000.c: In function dt3k_ai_insn_read:
drivers/staging/comedi/drivers/dt3000.c:511:27: warning: variable aref set but not used [-Wunused-but-set-variable]

It is not used since commit 2e310235ca8f ("staging:
comedi: dt3000: rename dt3k_ai_insn()")

Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: zhengbin <zhengbin13@huawei.com>
---
 drivers/staging/comedi/drivers/dt3000.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/staging/comedi/drivers/dt3000.c b/drivers/staging/comedi/drivers/dt3000.c
index caf4d4d..f7c365b 100644
--- a/drivers/staging/comedi/drivers/dt3000.c
+++ b/drivers/staging/comedi/drivers/dt3000.c
@@ -508,12 +508,11 @@ static int dt3k_ai_insn_read(struct comedi_device *dev,
 			     unsigned int *data)
 {
 	int i;
-	unsigned int chan, gain, aref;
+	unsigned int chan, gain;

 	chan = CR_CHAN(insn->chanspec);
 	gain = CR_RANGE(insn->chanspec);
 	/* XXX docs don't explain how to select aref */
-	aref = CR_AREF(insn->chanspec);

 	for (i = 0; i < insn->n; i++)
 		data[i] = dt3k_readsingle(dev, DPR_SUBSYS_AI, chan, gain);
--
2.7.4

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^ permalink raw reply	[flat|nested] 10+ messages in thread

* Re: [PATCH 1/6] staging: bcm2835-audio: Remove set but not used variable 'status'
  2019-10-08  5:38 ` [PATCH 1/6] staging: bcm2835-audio: Remove set but not used variable 'status' zhengbin
@ 2019-10-08  6:04   ` Dan Carpenter
  0 siblings, 0 replies; 10+ messages in thread
From: Dan Carpenter @ 2019-10-08  6:04 UTC (permalink / raw)
  To: zhengbin; +Cc: devel, eric, gregkh, abbotti, wahrenst

On Tue, Oct 08, 2019 at 01:38:57PM +0800, zhengbin wrote:
> diff --git a/drivers/staging/vc04_services/bcm2835-audio/bcm2835-vchiq.c b/drivers/staging/vc04_services/bcm2835-audio/bcm2835-vchiq.c
> index c6f9cf1..8a94c5b 100644
> --- a/drivers/staging/vc04_services/bcm2835-audio/bcm2835-vchiq.c
> +++ b/drivers/staging/vc04_services/bcm2835-audio/bcm2835-vchiq.c
> @@ -96,13 +96,12 @@ static void audio_vchi_callback(void *param,
>  	struct bcm2835_audio_instance *instance = param;
>  	struct vc_audio_msg m;
>  	int msg_len;
> -	int status;
> 
>  	if (reason != VCHI_CALLBACK_MSG_AVAILABLE)
>  		return;
> 
> -	status = vchi_msg_dequeue(instance->vchi_handle,
> -				  &m, sizeof(m), &msg_len, VCHI_FLAGS_NONE);
> +	vchi_msg_dequeue(instance->vchi_handle,
> +			 &m, sizeof(m), &msg_len, VCHI_FLAGS_NONE);

This looks like a bug in the code.  flags is VCHI_FLAGS_NONE so it can
return -1 and we should check for that.

>  	if (m.type == VC_AUDIO_MSG_TYPE_RESULT) {

regards,
dan carpenter

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^ permalink raw reply	[flat|nested] 10+ messages in thread

* Re: [PATCH 2/6] staging: sm750fb: Remove set but not used variable 'uiActualPixelClk'
  2019-10-08  5:38 ` [PATCH 2/6] staging: sm750fb: Remove set but not used variable 'uiActualPixelClk' zhengbin
@ 2019-10-08  6:06   ` Dan Carpenter
  2019-10-08  6:08     ` Dan Carpenter
  0 siblings, 1 reply; 10+ messages in thread
From: Dan Carpenter @ 2019-10-08  6:06 UTC (permalink / raw)
  To: zhengbin; +Cc: devel, eric, gregkh, abbotti, wahrenst

On Tue, Oct 08, 2019 at 01:38:58PM +0800, zhengbin wrote:
> diff --git a/drivers/staging/sm750fb/ddk750_mode.c b/drivers/staging/sm750fb/ddk750_mode.c
> index 9722692..e0230f4 100644
> --- a/drivers/staging/sm750fb/ddk750_mode.c
> +++ b/drivers/staging/sm750fb/ddk750_mode.c
> @@ -209,12 +209,11 @@ static int programModeRegisters(struct mode_parameter *pModeParam,
>  int ddk750_setModeTiming(struct mode_parameter *parm, enum clock_type clock)
>  {
>  	struct pll_value pll;
> -	unsigned int uiActualPixelClk;
> 
>  	pll.input_freq = DEFAULT_INPUT_CLOCK;
>  	pll.clock_type = clock;
> 
> -	uiActualPixelClk = sm750_calc_pll_value(parm->pixel_clock, &pll);
> +	sm750_calc_pll_value(parm->pixel_clock, &pll);

Get rid of this function as well.

regards,
dan carpenter


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http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel

^ permalink raw reply	[flat|nested] 10+ messages in thread

* Re: [PATCH 2/6] staging: sm750fb: Remove set but not used variable 'uiActualPixelClk'
  2019-10-08  6:06   ` Dan Carpenter
@ 2019-10-08  6:08     ` Dan Carpenter
  0 siblings, 0 replies; 10+ messages in thread
From: Dan Carpenter @ 2019-10-08  6:08 UTC (permalink / raw)
  To: zhengbin; +Cc: devel, eric, gregkh, abbotti, wahrenst

On Tue, Oct 08, 2019 at 09:06:11AM +0300, Dan Carpenter wrote:
> On Tue, Oct 08, 2019 at 01:38:58PM +0800, zhengbin wrote:
> > diff --git a/drivers/staging/sm750fb/ddk750_mode.c b/drivers/staging/sm750fb/ddk750_mode.c
> > index 9722692..e0230f4 100644
> > --- a/drivers/staging/sm750fb/ddk750_mode.c
> > +++ b/drivers/staging/sm750fb/ddk750_mode.c
> > @@ -209,12 +209,11 @@ static int programModeRegisters(struct mode_parameter *pModeParam,
> >  int ddk750_setModeTiming(struct mode_parameter *parm, enum clock_type clock)
> >  {
> >  	struct pll_value pll;
> > -	unsigned int uiActualPixelClk;
> > 
> >  	pll.input_freq = DEFAULT_INPUT_CLOCK;
> >  	pll.clock_type = clock;
> > 
> > -	uiActualPixelClk = sm750_calc_pll_value(parm->pixel_clock, &pll);
> > +	sm750_calc_pll_value(parm->pixel_clock, &pll);
> 
> Get rid of this function as well.

Oops.  I'm wrong.  Sorry for the noise.  Leave the function.

regards,
dan carpenter
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^ permalink raw reply	[flat|nested] 10+ messages in thread

end of thread, back to index

Thread overview: 10+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2019-10-08  5:38 [PATCH 0/6] staging: Remove a bounch set of set but not used variables zhengbin
2019-10-08  5:38 ` [PATCH 1/6] staging: bcm2835-audio: Remove set but not used variable 'status' zhengbin
2019-10-08  6:04   ` Dan Carpenter
2019-10-08  5:38 ` [PATCH 2/6] staging: sm750fb: Remove set but not used variable 'uiActualPixelClk' zhengbin
2019-10-08  6:06   ` Dan Carpenter
2019-10-08  6:08     ` Dan Carpenter
2019-10-08  5:38 ` [PATCH 3/6] staging: sm750fb: Remove set but not used variable 'actual_mx_clk' zhengbin
2019-10-08  5:39 ` [PATCH 4/6] staging: comedi: Remove set but not used variable 'data' zhengbin
2019-10-08  5:39 ` [PATCH 5/6] staging: comedi: Remove set but not used variable 'hi' zhengbin
2019-10-08  5:39 ` [PATCH 6/6] staging: comedi: Remove set but not used variable 'aref' zhengbin

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