| Message ID | 1494387348-41170-1-git-send-email-bibby.hsieh@mediatek.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
Hi Bibby,
[auto build test ERROR on v4.9-rc8]
[cannot apply to drm/drm-next next-20170510]
[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/Bibby-Hsieh/drm-mediatek-change-the-variable-type-of-rdma-threshold/20170510-114823
config: arm-allmodconfig (attached as .config)
compiler: arm-linux-gnueabi-gcc (Debian 6.1.1-9) 6.1.1 20160705
reproduce:
wget https://raw.githubusercontent.com/01org/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# save the attached .config to linux build tree
make.cross ARCH=arm
All errors (new ones prefixed by >>):
>> ERROR: "__aeabi_uldivmod" [drivers/gpu/drm/mediatek/mediatek-drm.ko] undefined!
---
0-DAY kernel test infrastructure Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all Intel Corporation
diff --git a/drivers/gpu/drm/mediatek/mtk_disp_rdma.c b/drivers/gpu/drm/mediatek/mtk_disp_rdma.c index 0df05f9..2718413 100644 --- a/drivers/gpu/drm/mediatek/mtk_disp_rdma.c +++ b/drivers/gpu/drm/mediatek/mtk_disp_rdma.c @@ -109,7 +109,7 @@ static void mtk_rdma_config(struct mtk_ddp_comp *comp, unsigned int width, unsigned int height, unsigned int vrefresh, unsigned int bpc) { - unsigned int threshold; + unsigned long long threshold; unsigned int reg; rdma_update_bits(comp, DISP_REG_RDMA_SIZE_CON_0, 0xfff, width); @@ -121,10 +121,11 @@ static void mtk_rdma_config(struct mtk_ddp_comp *comp, unsigned int width, * output threshold to 6 microseconds with 7/6 overhead to * account for blanking, and with a pixel depth of 4 bytes: */ - threshold = width * height * vrefresh * 4 * 7 / 1000000; + threshold = (unsigned long long)width * height * vrefresh * + 4 * 7 / 1000000; reg = RDMA_FIFO_UNDERFLOW_EN | RDMA_FIFO_PSEUDO_SIZE(SZ_8K) | - RDMA_OUTPUT_VALID_FIFO_THRESHOLD(threshold); + (unsigned int)RDMA_OUTPUT_VALID_FIFO_THRESHOLD(threshold); writel(reg, comp->regs + DISP_REG_RDMA_FIFO_CON); }
For some greater resolution, the rdma threshold variable will overflow. Signed-off-by: Bibby Hsieh <bibby.hsieh@mediatek.com> --- drivers/gpu/drm/mediatek/mtk_disp_rdma.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-)