2022-08-28 13:23:19

by kernel test robot

[permalink] [raw]
Subject: [pinchartl-media:drm/du/next 13/14] drivers/gpu/drm/rcar-du/rcar_mipi_dsi.c:614:6: warning: no previous prototype for function 'rcar_mipi_dsi_pclk_enable'

tree: git://linuxtv.org/pinchartl/media.git drm/du/next
head: 1a1ef49313becc3127e3bd2b6cdb27e5fc54f761
commit: 81c238208c6accde5592851b101986b8b91ec859 [13/14] drm: rcar-du: Fix DSI enable & disable sequence
config: riscv-randconfig-c006-20220828 (https://download.01.org/0day-ci/archive/20220828/[email protected]/config)
compiler: clang version 16.0.0 (https://github.com/llvm/llvm-project a2100daf12fb980a29fd1a9c85ccf8eaaaf79730)
reproduce (this is a W=1 build):
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# install riscv cross compiling tool for clang build
# apt-get install binutils-riscv-linux-gnu
git remote add pinchartl-media git://linuxtv.org/pinchartl/media.git
git fetch --no-tags pinchartl-media drm/du/next
git checkout 81c238208c6accde5592851b101986b8b91ec859
# save the config file
mkdir build_dir && cp config build_dir/.config
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=riscv SHELL=/bin/bash drivers/gpu/drm/rcar-du/

If you fix the issue, kindly add following tag where applicable
Reported-by: kernel test robot <[email protected]>

All warnings (new ones prefixed by >>):

>> drivers/gpu/drm/rcar-du/rcar_mipi_dsi.c:614:6: warning: no previous prototype for function 'rcar_mipi_dsi_pclk_enable' [-Wmissing-prototypes]
void rcar_mipi_dsi_pclk_enable(struct drm_bridge *bridge,
^
drivers/gpu/drm/rcar-du/rcar_mipi_dsi.c:614:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
void rcar_mipi_dsi_pclk_enable(struct drm_bridge *bridge,
^
static
>> drivers/gpu/drm/rcar-du/rcar_mipi_dsi.c:653:6: warning: no previous prototype for function 'rcar_mipi_dsi_pclk_disable' [-Wmissing-prototypes]
void rcar_mipi_dsi_pclk_disable(struct drm_bridge *bridge)
^
drivers/gpu/drm/rcar-du/rcar_mipi_dsi.c:653:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
void rcar_mipi_dsi_pclk_disable(struct drm_bridge *bridge)
^
static
2 warnings generated.


vim +/rcar_mipi_dsi_pclk_enable +614 drivers/gpu/drm/rcar-du/rcar_mipi_dsi.c

613
> 614 void rcar_mipi_dsi_pclk_enable(struct drm_bridge *bridge,
615 struct drm_atomic_state *state)
616 {
617 struct rcar_mipi_dsi *dsi = bridge_to_rcar_mipi_dsi(bridge);
618 const struct drm_display_mode *mode;
619 struct drm_connector *connector;
620 struct drm_crtc *crtc;
621 int ret;
622
623 connector = drm_atomic_get_new_connector_for_encoder(state,
624 bridge->encoder);
625 crtc = drm_atomic_get_new_connector_state(state, connector)->crtc;
626 mode = &drm_atomic_get_new_crtc_state(state, crtc)->adjusted_mode;
627
628 ret = rcar_mipi_dsi_clk_enable(dsi);
629 if (ret < 0) {
630 dev_err(dsi->dev, "failed to enable DSI clocks\n");
631 return;
632 }
633
634 ret = rcar_mipi_dsi_startup(dsi, mode);
635 if (ret < 0)
636 goto err_dsi_startup;
637
638 rcar_mipi_dsi_set_display_timing(dsi, mode);
639
640 ret = rcar_mipi_dsi_start_hs_clock(dsi);
641 if (ret < 0)
642 goto err_dsi_start_hs;
643
644 return;
645
646 err_dsi_start_hs:
647 rcar_mipi_dsi_shutdown(dsi);
648 err_dsi_startup:
649 rcar_mipi_dsi_clk_disable(dsi);
650 }
651 EXPORT_SYMBOL_GPL(rcar_mipi_dsi_pclk_enable);
652
> 653 void rcar_mipi_dsi_pclk_disable(struct drm_bridge *bridge)
654 {
655 struct rcar_mipi_dsi *dsi = bridge_to_rcar_mipi_dsi(bridge);
656
657 rcar_mipi_dsi_shutdown(dsi);
658 rcar_mipi_dsi_clk_disable(dsi);
659 }
660 EXPORT_SYMBOL_GPL(rcar_mipi_dsi_pclk_disable);
661

--
0-DAY CI Kernel Test Service
https://01.org/lkp


2022-08-28 17:32:23

by Laurent Pinchart

[permalink] [raw]
Subject: Re: [pinchartl-media:drm/du/next 13/14] drivers/gpu/drm/rcar-du/rcar_mipi_dsi.c:614:6: warning: no previous prototype for function 'rcar_mipi_dsi_pclk_enable'

Hi Tomi,

On Sun, Aug 28, 2022 at 08:52:39PM +0800, kernel test robot wrote:
> tree: git://linuxtv.org/pinchartl/media.git drm/du/next
> head: 1a1ef49313becc3127e3bd2b6cdb27e5fc54f761
> commit: 81c238208c6accde5592851b101986b8b91ec859 [13/14] drm: rcar-du: Fix DSI enable & disable sequence
> config: riscv-randconfig-c006-20220828 (https://download.01.org/0day-ci/archive/20220828/[email protected]/config)
> compiler: clang version 16.0.0 (https://github.com/llvm/llvm-project a2100daf12fb980a29fd1a9c85ccf8eaaaf79730)
> reproduce (this is a W=1 build):
> wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
> chmod +x ~/bin/make.cross
> # install riscv cross compiling tool for clang build
> # apt-get install binutils-riscv-linux-gnu
> git remote add pinchartl-media git://linuxtv.org/pinchartl/media.git
> git fetch --no-tags pinchartl-media drm/du/next
> git checkout 81c238208c6accde5592851b101986b8b91ec859
> # save the config file
> mkdir build_dir && cp config build_dir/.config
> COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=riscv SHELL=/bin/bash drivers/gpu/drm/rcar-du/
>
> If you fix the issue, kindly add following tag where applicable
> Reported-by: kernel test robot <[email protected]>
>
> All warnings (new ones prefixed by >>):
>
> >> drivers/gpu/drm/rcar-du/rcar_mipi_dsi.c:614:6: warning: no previous prototype for function 'rcar_mipi_dsi_pclk_enable' [-Wmissing-prototypes]
> void rcar_mipi_dsi_pclk_enable(struct drm_bridge *bridge,
> ^
> drivers/gpu/drm/rcar-du/rcar_mipi_dsi.c:614:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
> void rcar_mipi_dsi_pclk_enable(struct drm_bridge *bridge,
> ^
> static
> >> drivers/gpu/drm/rcar-du/rcar_mipi_dsi.c:653:6: warning: no previous prototype for function 'rcar_mipi_dsi_pclk_disable' [-Wmissing-prototypes]
> void rcar_mipi_dsi_pclk_disable(struct drm_bridge *bridge)
> ^
> drivers/gpu/drm/rcar-du/rcar_mipi_dsi.c:653:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
> void rcar_mipi_dsi_pclk_disable(struct drm_bridge *bridge)
> ^
> static
> 2 warnings generated.

I'll squash the following fix in "drm: rcar-du: Fix DSI enable & disable
sequence":

diff --git a/drivers/gpu/drm/rcar-du/rcar_mipi_dsi.c b/drivers/gpu/drm/rcar-du/rcar_mipi_dsi.c
index 90128d5e3d17..a7f2b7f66a17 100644
--- a/drivers/gpu/drm/rcar-du/rcar_mipi_dsi.c
+++ b/drivers/gpu/drm/rcar-du/rcar_mipi_dsi.c
@@ -25,6 +25,7 @@
#include <drm/drm_panel.h>
#include <drm/drm_probe_helper.h>

+#include "rcar_mipi_dsi.h"
#include "rcar_mipi_dsi_regs.h"

struct rcar_mipi_dsi {

> vim +/rcar_mipi_dsi_pclk_enable +614 drivers/gpu/drm/rcar-du/rcar_mipi_dsi.c
>
> 613
> > 614 void rcar_mipi_dsi_pclk_enable(struct drm_bridge *bridge,
> 615 struct drm_atomic_state *state)
> 616 {
> 617 struct rcar_mipi_dsi *dsi = bridge_to_rcar_mipi_dsi(bridge);
> 618 const struct drm_display_mode *mode;
> 619 struct drm_connector *connector;
> 620 struct drm_crtc *crtc;
> 621 int ret;
> 622
> 623 connector = drm_atomic_get_new_connector_for_encoder(state,
> 624 bridge->encoder);
> 625 crtc = drm_atomic_get_new_connector_state(state, connector)->crtc;
> 626 mode = &drm_atomic_get_new_crtc_state(state, crtc)->adjusted_mode;
> 627
> 628 ret = rcar_mipi_dsi_clk_enable(dsi);
> 629 if (ret < 0) {
> 630 dev_err(dsi->dev, "failed to enable DSI clocks\n");
> 631 return;
> 632 }
> 633
> 634 ret = rcar_mipi_dsi_startup(dsi, mode);
> 635 if (ret < 0)
> 636 goto err_dsi_startup;
> 637
> 638 rcar_mipi_dsi_set_display_timing(dsi, mode);
> 639
> 640 ret = rcar_mipi_dsi_start_hs_clock(dsi);
> 641 if (ret < 0)
> 642 goto err_dsi_start_hs;
> 643
> 644 return;
> 645
> 646 err_dsi_start_hs:
> 647 rcar_mipi_dsi_shutdown(dsi);
> 648 err_dsi_startup:
> 649 rcar_mipi_dsi_clk_disable(dsi);
> 650 }
> 651 EXPORT_SYMBOL_GPL(rcar_mipi_dsi_pclk_enable);
> 652
> > 653 void rcar_mipi_dsi_pclk_disable(struct drm_bridge *bridge)
> 654 {
> 655 struct rcar_mipi_dsi *dsi = bridge_to_rcar_mipi_dsi(bridge);
> 656
> 657 rcar_mipi_dsi_shutdown(dsi);
> 658 rcar_mipi_dsi_clk_disable(dsi);
> 659 }
> 660 EXPORT_SYMBOL_GPL(rcar_mipi_dsi_pclk_disable);
> 661

--
Regards,

Laurent Pinchart

2022-08-29 06:25:57

by Tomi Valkeinen

[permalink] [raw]
Subject: Re: [pinchartl-media:drm/du/next 13/14] drivers/gpu/drm/rcar-du/rcar_mipi_dsi.c:614:6: warning: no previous prototype for function 'rcar_mipi_dsi_pclk_enable'

On 28/08/2022 19:54, Laurent Pinchart wrote:
> Hi Tomi,
>
> On Sun, Aug 28, 2022 at 08:52:39PM +0800, kernel test robot wrote:
>> tree: git://linuxtv.org/pinchartl/media.git drm/du/next
>> head: 1a1ef49313becc3127e3bd2b6cdb27e5fc54f761
>> commit: 81c238208c6accde5592851b101986b8b91ec859 [13/14] drm: rcar-du: Fix DSI enable & disable sequence
>> config: riscv-randconfig-c006-20220828 (https://download.01.org/0day-ci/archive/20220828/[email protected]/config)
>> compiler: clang version 16.0.0 (https://github.com/llvm/llvm-project a2100daf12fb980a29fd1a9c85ccf8eaaaf79730)
>> reproduce (this is a W=1 build):
>> wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
>> chmod +x ~/bin/make.cross
>> # install riscv cross compiling tool for clang build
>> # apt-get install binutils-riscv-linux-gnu
>> git remote add pinchartl-media git://linuxtv.org/pinchartl/media.git
>> git fetch --no-tags pinchartl-media drm/du/next
>> git checkout 81c238208c6accde5592851b101986b8b91ec859
>> # save the config file
>> mkdir build_dir && cp config build_dir/.config
>> COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=riscv SHELL=/bin/bash drivers/gpu/drm/rcar-du/
>>
>> If you fix the issue, kindly add following tag where applicable
>> Reported-by: kernel test robot <[email protected]>
>>
>> All warnings (new ones prefixed by >>):
>>
>>>> drivers/gpu/drm/rcar-du/rcar_mipi_dsi.c:614:6: warning: no previous prototype for function 'rcar_mipi_dsi_pclk_enable' [-Wmissing-prototypes]
>> void rcar_mipi_dsi_pclk_enable(struct drm_bridge *bridge,
>> ^
>> drivers/gpu/drm/rcar-du/rcar_mipi_dsi.c:614:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
>> void rcar_mipi_dsi_pclk_enable(struct drm_bridge *bridge,
>> ^
>> static
>>>> drivers/gpu/drm/rcar-du/rcar_mipi_dsi.c:653:6: warning: no previous prototype for function 'rcar_mipi_dsi_pclk_disable' [-Wmissing-prototypes]
>> void rcar_mipi_dsi_pclk_disable(struct drm_bridge *bridge)
>> ^
>> drivers/gpu/drm/rcar-du/rcar_mipi_dsi.c:653:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
>> void rcar_mipi_dsi_pclk_disable(struct drm_bridge *bridge)
>> ^
>> static
>> 2 warnings generated.
>
> I'll squash the following fix in "drm: rcar-du: Fix DSI enable & disable
> sequence":
>
> diff --git a/drivers/gpu/drm/rcar-du/rcar_mipi_dsi.c b/drivers/gpu/drm/rcar-du/rcar_mipi_dsi.c
> index 90128d5e3d17..a7f2b7f66a17 100644
> --- a/drivers/gpu/drm/rcar-du/rcar_mipi_dsi.c
> +++ b/drivers/gpu/drm/rcar-du/rcar_mipi_dsi.c
> @@ -25,6 +25,7 @@
> #include <drm/drm_panel.h>
> #include <drm/drm_probe_helper.h>
>
> +#include "rcar_mipi_dsi.h"
> #include "rcar_mipi_dsi_regs.h"
>
> struct rcar_mipi_dsi {
>

Looks good to me.

Tomi