* [chrome-os:chromeos-5.4 7/42] drivers/gpu/drm/msm/dp/dp_aux.c:34:8: warning: type qualifiers ignored on function return type
@ 2020-07-24 4:16 kernel test robot
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From: kernel test robot @ 2020-07-24 4:16 UTC (permalink / raw)
To: kbuild-all
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tree: https://chromium.googlesource.com/chromiumos/third_party/kernel chromeos-5.4
head: 56c29f07e1d917570df2ace3faabc5e18df5ae8c
commit: 154b5a7da0fdc0340180a211f692be70a09ea2c4 [7/42] FROMLIST: drm/msm/dp: add displayPort driver support
config: arm64-allyesconfig (attached as .config)
compiler: aarch64-linux-gcc (GCC) 9.3.0
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
git checkout 154b5a7da0fdc0340180a211f692be70a09ea2c4
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=arm64
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>
All warnings (new ones prefixed by >>):
>> drivers/gpu/drm/msm/dp/dp_aux.c:34:8: warning: type qualifiers ignored on function return type [-Wignored-qualifiers]
34 | static const char * const dp_aux_get_error(u32 aux_error)
| ^~~~~
--
>> drivers/gpu/drm/msm/dp/dp_catalog.c:370:6: warning: no previous prototype for 'dump_regs' [-Wmissing-prototypes]
370 | void dump_regs(void * __iomem *base, int len)
| ^~~~~~~~~
In file included from include/linux/printk.h:7,
from include/linux/kernel.h:15,
from include/linux/delay.h:22,
from drivers/gpu/drm/msm/dp/dp_catalog.c:8:
drivers/gpu/drm/msm/dp/dp_catalog.c: In function 'dump_regs':
>> include/linux/kern_levels.h:5:18: warning: '0' flag used with '%p' gnu_printf format [-Wformat=]
5 | #define KERN_SOH "\001" /* ASCII Start Of Header */
| ^~~~~~
include/linux/kern_levels.h:14:19: note: in expansion of macro 'KERN_SOH'
14 | #define KERN_INFO KERN_SOH "6" /* informational */
| ^~~~~~~~
include/linux/printk.h:306:9: note: in expansion of macro 'KERN_INFO'
306 | printk(KERN_INFO pr_fmt(fmt), ##__VA_ARGS__)
| ^~~~~~~~~
drivers/gpu/drm/msm/dp/dp_catalog.c:382:3: note: in expansion of macro 'pr_info'
382 | pr_info("%08p: %08x %08x %08x %08x", base, x0, x4, x8, xc);
| ^~~~~~~
drivers/gpu/drm/msm/dp/dp_catalog.c:382:15: note: format string is defined here
382 | pr_info("%08p: %08x %08x %08x %08x", base, x0, x4, x8, xc);
| ^
At top level:
drivers/gpu/drm/msm/dp/dp_catalog.c:77:17: warning: 'vm_voltage_swing_hbr3_hbr2' defined but not used [-Wunused-const-variable=]
77 | static u8 const vm_voltage_swing_hbr3_hbr2[4][4] = {
| ^~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/msm/dp/dp_catalog.c:70:17: warning: 'vm_pre_emphasis_hbr3_hbr2' defined but not used [-Wunused-const-variable=]
70 | static u8 const vm_pre_emphasis_hbr3_hbr2[4][4] = {
| ^~~~~~~~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/msm/dp/dp_catalog.c:63:17: warning: 'vm_voltage_swing' defined but not used [-Wunused-const-variable=]
63 | static u8 const vm_voltage_swing[4][4] = {
| ^~~~~~~~~~~~~~~~
drivers/gpu/drm/msm/dp/dp_catalog.c:55:17: warning: 'vm_pre_emphasis' defined but not used [-Wunused-const-variable=]
55 | static u8 const vm_pre_emphasis[4][4] = {
| ^~~~~~~~~~~~~~~
--
drivers/gpu/drm/msm/dp/dp_ctrl.c: In function '_tu_param_compare':
>> drivers/gpu/drm/msm/dp/dp_ctrl.c:254:13: warning: variable 'b_frac' set but not used [-Wunused-but-set-variable]
254 | u32 b_int, b_frac, b_sign;
| ^~~~~~
>> drivers/gpu/drm/msm/dp/dp_ctrl.c:254:6: warning: variable 'b_int' set but not used [-Wunused-but-set-variable]
254 | u32 b_int, b_frac, b_sign;
| ^~~~~
>> drivers/gpu/drm/msm/dp/dp_ctrl.c:253:13: warning: variable 'a_frac' set but not used [-Wunused-but-set-variable]
253 | u32 a_int, a_frac, a_sign;
| ^~~~~~
>> drivers/gpu/drm/msm/dp/dp_ctrl.c:253:6: warning: variable 'a_int' set but not used [-Wunused-but-set-variable]
253 | u32 a_int, a_frac, a_sign;
| ^~~~~
drivers/gpu/drm/msm/dp/dp_ctrl.c: In function 'dp_panel_update_tu_timings':
>> drivers/gpu/drm/msm/dp/dp_ctrl.c:301:6: warning: variable 'overhead_dsc' set but not used [-Wunused-but-set-variable]
301 | s64 overhead_dsc;
| ^~~~~~~~~~~~
--
drivers/gpu/drm/msm/dp/dp_link.c: In function 'dp_link_adjust_levels':
>> drivers/gpu/drm/msm/dp/dp_link.c:1106:26: warning: variable 'link' set but not used [-Wunused-but-set-variable]
1106 | struct dp_link_private *link;
| ^~~~
--
drivers/gpu/drm/msm/dp/dp_panel.c: In function 'dp_panel_read_dpcd':
drivers/gpu/drm/msm/dp/dp_panel.c:39:11: warning: comparison of unsigned expression < 0 is always false [-Wtype-limits]
39 | if (rlen < 0) {
| ^
drivers/gpu/drm/msm/dp/dp_panel.c: At top level:
>> drivers/gpu/drm/msm/dp/dp_panel.c:283:4: warning: no previous prototype for 'dp_panel_get_edid_checksum' [-Wmissing-prototypes]
283 | u8 dp_panel_get_edid_checksum(struct edid *edid)
| ^~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/msm/dp/dp_panel.c: In function 'dp_panel_put':
>> drivers/gpu/drm/msm/dp/dp_panel.c:482:27: warning: variable 'panel' set but not used [-Wunused-but-set-variable]
482 | struct dp_panel_private *panel;
| ^~~~~
--
drivers/gpu/drm/msm/dp/dp_parser.c: In function 'dp_parser_init_clk_data':
>> drivers/gpu/drm/msm/dp/dp_parser.c:131:26: warning: variable 'rc' set but not used [-Wunused-but-set-variable]
131 | int num_clk = 0, i = 0, rc = 0;
| ^~
--
drivers/gpu/drm/msm/dp/dp_power.c: In function 'dp_power_clk_enable':
>> drivers/gpu/drm/msm/dp/dp_power.c:164:27: warning: variable 'mp' set but not used [-Wunused-but-set-variable]
164 | struct dss_module_power *mp;
| ^~
vim +34 drivers/gpu/drm/msm/dp/dp_aux.c
33
> 34 static const char * const dp_aux_get_error(u32 aux_error)
35 {
36 switch (aux_error) {
37 case DP_AUX_ERR_NONE:
38 return DP_AUX_ENUM_STR(DP_AUX_ERR_NONE);
39 case DP_AUX_ERR_ADDR:
40 return DP_AUX_ENUM_STR(DP_AUX_ERR_ADDR);
41 case DP_AUX_ERR_TOUT:
42 return DP_AUX_ENUM_STR(DP_AUX_ERR_TOUT);
43 case DP_AUX_ERR_NACK:
44 return DP_AUX_ENUM_STR(DP_AUX_ERR_NACK);
45 case DP_AUX_ERR_DEFER:
46 return DP_AUX_ENUM_STR(DP_AUX_ERR_DEFER);
47 case DP_AUX_ERR_NACK_DEFER:
48 return DP_AUX_ENUM_STR(DP_AUX_ERR_NACK_DEFER);
49 default:
50 return "unknown";
51 }
52 }
53
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org
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2020-07-24 4:16 [chrome-os:chromeos-5.4 7/42] drivers/gpu/drm/msm/dp/dp_aux.c:34:8: warning: type qualifiers ignored on function return type kernel test robot
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