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Subject: media: atomisp: Fix eed1_8 code assigning signed values to an unsigned variable Author: Hans de Goede <hdego...@redhat.com> Date: Sat Sep 7 13:17:01 2024 +0200 ia_css_eed1_8_vmem_encode() is assigning values with a range of -8192 - 8191 to e_dew_enh_y and e_dew_enh_a both of which are of the VMEM_ARRAY type which maps to u16. This causes the following smatch warnings: drivers/staging/media/atomisp/pci/isp/kernels/eed1_8/ia_css_eed1_8.host.c: drivers/staging/media/atomisp/pci/isp/kernels/eed1_8/ia_css_eed1_8.host.c:177 ia_css_eed1_8_vmem_encode() warn: assigning (-8192) to unsigned variable 'to->e_dew_enh_y[0][base + j]' drivers/staging/media/atomisp/pci/isp/kernels/eed1_8/ia_css_eed1_8.host.c: drivers/staging/media/atomisp/pci/isp/kernels/eed1_8/ia_css_eed1_8.host.c:182 ia_css_eed1_8_vmem_encode() warn: assigning (-8192) to unsigned variable 'to->e_dew_enh_a[0][base + j]' Convert the e_dew_enh_y and e_dew_enh_a arrays to a new SVMEM_ARRAY type which maps to s16 to fix this. Link: https://lore.kernel.org/linux-media/20240907111701.8493-1-hdego...@redhat.com Reported-by: Mauro Carvalho Chehab <mche...@kernel.org> Closes: https://lore.kernel.org/linux-media/20240906081542.5cb0c...@foz.lan/ Signed-off-by: Hans de Goede <hdego...@redhat.com> Signed-off-by: Mauro Carvalho Chehab <mchehab+hua...@kernel.org> .../staging/media/atomisp/pci/hive_isp_css_common/host/vmem_local.h | 4 +++- .../media/atomisp/pci/isp/kernels/eed1_8/ia_css_eed1_8_param.h | 4 ++-- 2 files changed, 5 insertions(+), 3 deletions(-) --- diff --git a/drivers/staging/media/atomisp/pci/hive_isp_css_common/host/vmem_local.h b/drivers/staging/media/atomisp/pci/hive_isp_css_common/host/vmem_local.h index d0ba59cedc92..6f0a8fe868bd 100644 --- a/drivers/staging/media/atomisp/pci/hive_isp_css_common/host/vmem_local.h +++ b/drivers/staging/media/atomisp/pci/hive_isp_css_common/host/vmem_local.h @@ -20,8 +20,10 @@ #include "vmem_global.h" typedef u16 t_vmem_elem; +typedef s16 t_svmem_elem; -#define VMEM_ARRAY(x, s) t_vmem_elem x[s / ISP_NWAY][ISP_NWAY] +#define VMEM_ARRAY(x, s) t_vmem_elem x[(s) / ISP_NWAY][ISP_NWAY] +#define SVMEM_ARRAY(x, s) t_svmem_elem x[(s) / ISP_NWAY][ISP_NWAY] void isp_vmem_load( const isp_ID_t ID, diff --git a/drivers/staging/media/atomisp/pci/isp/kernels/eed1_8/ia_css_eed1_8_param.h b/drivers/staging/media/atomisp/pci/isp/kernels/eed1_8/ia_css_eed1_8_param.h index 6fb3b38f49e7..b9eeeb592ec8 100644 --- a/drivers/staging/media/atomisp/pci/isp/kernels/eed1_8/ia_css_eed1_8_param.h +++ b/drivers/staging/media/atomisp/pci/isp/kernels/eed1_8/ia_css_eed1_8_param.h @@ -94,8 +94,8 @@ struct eed1_8_vmem_params { VMEM_ARRAY(e_dew_enh_x, ISP_VEC_NELEMS); - VMEM_ARRAY(e_dew_enh_y, ISP_VEC_NELEMS); - VMEM_ARRAY(e_dew_enh_a, ISP_VEC_NELEMS); + SVMEM_ARRAY(e_dew_enh_y, ISP_VEC_NELEMS); + SVMEM_ARRAY(e_dew_enh_a, ISP_VEC_NELEMS); VMEM_ARRAY(e_dew_enh_f, ISP_VEC_NELEMS); VMEM_ARRAY(chgrinv_x, ISP_VEC_NELEMS); VMEM_ARRAY(chgrinv_a, ISP_VEC_NELEMS);
