On Fri, 22 Feb 2019, kbuild test robot <l...@intel.com> wrote:
> Hi David,
>
> Thank you for the patch! Perhaps something to improve:
>
> [auto build test WARNING on linus/master]
> [also build test WARNING on v5.0-rc4 next-20190221]
> [if your patch is applied to the wrong git tree, please drop us a note to
> help improve the system]
>
> url:
> https://github.com/0day-ci/linux/commits/David-Santamar-a-Rogado/drm-panel-orientation-quirks-Get-rid-of-superfluous-void-casting/20190222-044326
> config: i386-randconfig-x019-201907 (attached as .config)
> compiler: gcc-8 (Debian 8.2.0-20) 8.2.0
> reproduce:
> # save the attached .config to linux build tree
> make ARCH=i386
>
> All warnings (new ones prefixed by >>):
>
>>> drivers/gpu/drm/drm_panel_orientation_quirks.c:89:18: warning:
>>> initialization discards 'const' qualifier from pointer target type
>>> [-Wdiscarded-qualifiers]
> .driver_data = &acer_s1003,
*facepalm*
I overlooked that .driver_data is void *, not const void *. IMO it's
ugly to use (void *) to cast the const away, but it is what it is and
not doing so will lead to these warnings.
So I'm really sorry I'm going to have to ask you to revert back to just
patch 2/2 without this. My mistake.
BR,
Jani.
> ^
> drivers/gpu/drm/drm_panel_orientation_quirks.c:95:18: warning:
> initialization discards 'const' qualifier from pointer target type
> [-Wdiscarded-qualifiers]
> .driver_data = &asus_t100ha,
> ^
> drivers/gpu/drm/drm_panel_orientation_quirks.c:108:18: warning:
> initialization discards 'const' qualifier from pointer target type
> [-Wdiscarded-qualifiers]
> .driver_data = &gpd_pocket,
> ^
> drivers/gpu/drm/drm_panel_orientation_quirks.c:116:18: warning:
> initialization discards 'const' qualifier from pointer target type
> [-Wdiscarded-qualifiers]
> .driver_data = &gpd_win,
> ^
> drivers/gpu/drm/drm_panel_orientation_quirks.c:124:18: warning:
> initialization discards 'const' qualifier from pointer target type
> [-Wdiscarded-qualifiers]
> .driver_data = &gpd_win2,
> ^
> drivers/gpu/drm/drm_panel_orientation_quirks.c:132:18: warning:
> initialization discards 'const' qualifier from pointer target type
> [-Wdiscarded-qualifiers]
> .driver_data = &itworks_tw891,
> ^
> drivers/gpu/drm/drm_panel_orientation_quirks.c:143:18: warning:
> initialization discards 'const' qualifier from pointer target type
> [-Wdiscarded-qualifiers]
> .driver_data = &lcd800x1280_rightside_up,
> ^
> drivers/gpu/drm/drm_panel_orientation_quirks.c:150:18: warning:
> initialization discards 'const' qualifier from pointer target type
> [-Wdiscarded-qualifiers]
> .driver_data = &lcd800x1280_rightside_up,
> ^
> drivers/gpu/drm/drm_panel_orientation_quirks.c:156:18: warning:
> initialization discards 'const' qualifier from pointer target type
> [-Wdiscarded-qualifiers]
> .driver_data = &lcd800x1280_rightside_up,
> ^
>
> vim +/const +89 drivers/gpu/drm/drm_panel_orientation_quirks.c
>
> 82
> 83 static const struct dmi_system_id orientation_data[] = {
> 84 { /* Acer One 10 (S1003) */
> 85 .matches = {
> 86 DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Acer"),
> 87 DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "One
> S1003"),
> 88 },
> > 89 .driver_data = &acer_s1003,
> 90 }, { /* Asus T100HA */
> 91 .matches = {
> 92 DMI_EXACT_MATCH(DMI_SYS_VENDOR, "ASUSTeK
> COMPUTER INC."),
> 93 DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "T100HAN"),
> 94 },
> 95 .driver_data = &asus_t100ha,
> 96 }, { /*
> 97 * GPD Pocket, note that the the DMI data is
> less generic then
> 98 * it seems, devices with a board-vendor of
> "AMI Corporation"
> 99 * are quite rare, as are devices which have
> both board- *and*
> 100 * product-id set to "Default String"
> 101 */
> 102 .matches = {
> 103 DMI_EXACT_MATCH(DMI_BOARD_VENDOR, "AMI
> Corporation"),
> 104 DMI_EXACT_MATCH(DMI_BOARD_NAME, "Default
> string"),
> 105 DMI_EXACT_MATCH(DMI_BOARD_SERIAL, "Default
> string"),
> 106 DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Default
> string"),
> 107 },
> 108 .driver_data = &gpd_pocket,
> 109 }, { /* GPD Win (same note on DMI match as GPD
> Pocket) */
> 110 .matches = {
> 111 DMI_EXACT_MATCH(DMI_BOARD_VENDOR, "AMI
> Corporation"),
> 112 DMI_EXACT_MATCH(DMI_BOARD_NAME, "Default
> string"),
> 113 DMI_EXACT_MATCH(DMI_BOARD_SERIAL, "Default
> string"),
> 114 DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Default
> string"),
> 115 },
> 116 .driver_data = &gpd_win,
> 117 }, { /* GPD Win 2 (too generic strings, also match
> on bios date) */
> 118 .matches = {
> 119 DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Default
> string"),
> 120 DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Default
> string"),
> 121 DMI_EXACT_MATCH(DMI_BOARD_VENDOR, "Default
> string"),
> 122 DMI_EXACT_MATCH(DMI_BOARD_NAME, "Default
> string"),
> 123 },
> 124 .driver_data = &gpd_win2,
> 125 }, { /* I.T.Works TW891 */
> 126 .matches = {
> 127 DMI_EXACT_MATCH(DMI_SYS_VENDOR, "To be filled
> by O.E.M."),
> 128 DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "TW891"),
> 129 DMI_EXACT_MATCH(DMI_BOARD_VENDOR, "To be
> filled by O.E.M."),
> 130 DMI_EXACT_MATCH(DMI_BOARD_NAME, "TW891"),
> 131 },
> 132 .driver_data = &itworks_tw891,
> 133 }, { /*
> 134 * Lenovo Ideapad Miix 310 laptop, only some
> production batches
> 135 * have a portrait screen, the resolution
> checks makes the quirk
> 136 * apply only to those batches.
> 137 */
> 138 .matches = {
> 139 DMI_EXACT_MATCH(DMI_SYS_VENDOR, "LENOVO"),
> 140 DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "80SG"),
> 141 DMI_EXACT_MATCH(DMI_PRODUCT_VERSION, "MIIX
> 310-10ICR"),
> 142 },
> 143 .driver_data = &lcd800x1280_rightside_up,
> 144 }, { /* Lenovo Ideapad Miix 320 */
> 145 .matches = {
> 146 DMI_EXACT_MATCH(DMI_SYS_VENDOR, "LENOVO"),
> 147 DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "80XF"),
> 148 DMI_EXACT_MATCH(DMI_PRODUCT_VERSION, "Lenovo
> MIIX 320-10ICR"),
> 149 },
> 150 .driver_data = &lcd800x1280_rightside_up,
> 151 }, { /* VIOS LTH17 */
> 152 .matches = {
> 153 DMI_EXACT_MATCH(DMI_SYS_VENDOR, "VIOS"),
> 154 DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "LTH17"),
> 155 },
> 156 .driver_data = &lcd800x1280_rightside_up,
> 157 },
> 158 {}
> 159 };
> 160
>
> ---
> 0-DAY kernel test infrastructure Open Source Technology Center
> https://lists.01.org/pipermail/kbuild-all Intel Corporation
--
Jani Nikula, Intel Open Source Graphics Center
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