[PATCH] media: atomisp: Remove useless return statement

[PATCH] media: atomisp: Remove useless return statement

[Tomas Chimenti]

Fix checkpatch error 
"WARNING: void function return statements are not generally useful"

Signed-off-by: Tomas Chimenti <tach.365@gmail.com>
---
Hello

This is my first patch, any feedback would be very welcome. Thanks
---
 .../pci/runtime/inputfifo/src/inputfifo.c        | 16 ----------------
 1 file changed, 16 deletions(-)

diff --git a/drivers/staging/media/atomisp/pci/runtime/inputfifo/src/inputfifo.c b/drivers/staging/media/atomisp/pci/runtime/inputfifo/src/inputfifo.c
index 8e1efeb6372c..f0dcd839e33b 100644
--- a/drivers/staging/media/atomisp/pci/runtime/inputfifo/src/inputfifo.c
+++ b/drivers/staging/media/atomisp/pci/runtime/inputfifo/src/inputfifo.c
@@ -88,7 +88,6 @@ _sh_css_fifo_snd(unsigned int token)
 	while (!can_event_send_token(STR2MIPI_EVENT_ID))
 		udelay(1);
 	event_send_token(STR2MIPI_EVENT_ID, token);
-	return;
 }
 
 static void inputfifo_send_data_a(
@@ -98,7 +97,6 @@ static void inputfifo_send_data_a(
 	unsigned int token = (1 << HIVE_STR_TO_MIPI_VALID_A_BIT) |
 			     (data << HIVE_STR_TO_MIPI_DATA_A_LSB);
 	_sh_css_fifo_snd(token);
-	return;
 }
 
 static void inputfifo_send_data_b(
@@ -108,7 +106,6 @@ static void inputfifo_send_data_b(
 	unsigned int token = (1 << HIVE_STR_TO_MIPI_VALID_B_BIT) |
 			     (data << _HIVE_STR_TO_MIPI_DATA_B_LSB);
 	_sh_css_fifo_snd(token);
-	return;
 }
 
 static void inputfifo_send_data(
@@ -121,7 +118,6 @@ static void inputfifo_send_data(
 			      (a << HIVE_STR_TO_MIPI_DATA_A_LSB) |
 			      (b << _HIVE_STR_TO_MIPI_DATA_B_LSB));
 	_sh_css_fifo_snd(token);
-	return;
 }
 
 static void inputfifo_send_sol(void)
@@ -131,7 +127,6 @@ static void inputfifo_send_sol(void)
 				1 << HIVE_STR_TO_MIPI_SOL_BIT);
 
 	_sh_css_fifo_snd(token);
-	return;
 }
 
 static void inputfifo_send_eol(void)
@@ -140,7 +135,6 @@ static void inputfifo_send_eol(void)
 	hrt_data	token = inputfifo_wrap_marker(
 				1 << HIVE_STR_TO_MIPI_EOL_BIT);
 	_sh_css_fifo_snd(token);
-	return;
 }
 
 static void inputfifo_send_sof(void)
@@ -150,7 +144,6 @@ static void inputfifo_send_sof(void)
 				1 << HIVE_STR_TO_MIPI_SOF_BIT);
 
 	_sh_css_fifo_snd(token);
-	return;
 }
 
 static void inputfifo_send_eof(void)
@@ -159,7 +152,6 @@ static void inputfifo_send_eof(void)
 	hrt_data	token = inputfifo_wrap_marker(
 				1 << HIVE_STR_TO_MIPI_EOF_BIT);
 	_sh_css_fifo_snd(token);
-	return;
 }
 
 static void inputfifo_send_ch_id_and_fmt_type(
@@ -177,7 +169,6 @@ static void inputfifo_send_ch_id_and_fmt_type(
 	 */
 	token = inputfifo_wrap_marker(0);
 	_sh_css_fifo_snd(token);
-	return;
 }
 
 static void inputfifo_send_empty_token(void)
@@ -186,7 +177,6 @@ static void inputfifo_send_empty_token(void)
 	hrt_data	token = inputfifo_wrap_marker(0);
 
 	_sh_css_fifo_snd(token);
-	return;
 }
 
 static void inputfifo_start_frame(
@@ -196,7 +186,6 @@ static void inputfifo_start_frame(
 {
 	inputfifo_send_ch_id_and_fmt_type(ch_id, fmt_type);
 	inputfifo_send_sof();
-	return;
 }
 
 static void inputfifo_end_frame(
@@ -207,7 +196,6 @@ static void inputfifo_end_frame(
 	for (i = 0; i < marker_cycles; i++)
 		inputfifo_send_empty_token();
 	inputfifo_send_eof();
-	return;
 }
 
 static void inputfifo_send_line2(
@@ -297,7 +285,6 @@ static void inputfifo_send_line2(
 	for (i = 0; i < hblank_cycles; i++)
 		inputfifo_send_empty_token();
 	inputfifo_send_eol();
-	return;
 }
 
 static void
@@ -377,7 +364,6 @@ static void inputfifo_send_frame(
 		}
 	}
 	inputfifo_end_frame(marker_cycles);
-	return;
 }
 
 static enum inputfifo_mipi_data_type inputfifo_determine_type(
@@ -453,7 +439,6 @@ void ia_css_inputfifo_start_frame(
 	s2mi->streaming = true;
 
 	inputfifo_start_frame(ch_id, s2mi->fmt_type);
-	return;
 }
 
 void ia_css_inputfifo_send_line(
@@ -516,5 +501,4 @@ void ia_css_inputfifo_end_frame(
 	inputfifo_end_frame(s2mi->marker_cycles);
 
 	s2mi->streaming = false;
-	return;
 }
-- 
2.39.5

Re: [PATCH] media: atomisp: Remove useless return statement

[Andy Shevchenko]

On Thu, Jul 23, 2026 at 12:21:46PM -0300, Tomas Chimenti wrote:
> Fix checkpatch error 
> "WARNING: void function return statements are not generally useful"
> 
> Signed-off-by: Tomas Chimenti <tach.365@gmail.com>
> ---
> Hello
> 
> This is my first patch, any feedback would be very welcome. Thanks

Right.
Please, read lore.kernel.org linux-media@ archives against this driver to
understand what to do with this patch.

Also, if you are in a group that is mentored, tell to the mentors to stop
looking into this driver by a newbie. This driver has much more urgent tasks
to do and it's not trivial, it also requires a real HW to be at hand to test.

-- 
With Best Regards,
Andy Shevchenko