All, I have a Cine CT V6.1 in my fedora 25 based media center. It is now running a default fedora 4.9 kernel. I install the driver as follows: hg clone https://linuxtv.org/hg/~endriss/media_build_experimental cd media_build_experimental make download make untar make menuconfig make make install However, I have to make two changes to the source to make it work. Change 1: in media_build_experimental/v4l/Kconfig line 6936 I have to remove the whitespace in '--- help ---', otherwise make menuconfig fails. Change 2: during compilation the following error occurs (since about kernel 4.5?): make -C /lib/modules/4.9.7-201.fc25.x86_64/build SUBDIRS=/home/htpc/Downloads/media_build_experimental/v4l modules make[2]: Entering directory '/usr/src/kernels/4.9.7-201.fc25.x86_64' CC [M] /home/htpc/Downloads/media_build_experimental/v4l/tuner-xc2028.o In file included from <command-line>:0:0: /home/htpc/Downloads/media_build_experimental/v4l/compat.h:1463:1: error: redefinition of 'pci_zalloc_consistent' pci_zalloc_consistent(struct pci_dev *hwdev, size_t size, ^~~~~~~~~~~~~~~~~~~~~ In file included from ./include/linux/pci.h:2145:0, from /home/htpc/Downloads/media_build_experimental/v4l/compat.h:1459, from <command-line>:0: ./include/linux/pci-dma-compat.h:23:1: note: previous definition of 'pci_zalloc_consistent' was here pci_zalloc_consistent(struct pci_dev *hwdev, size_t size, ^~~~~~~~~~~~~~~~~~~~~ In file included from <command-line>:0:0: /home/htpc/Downloads/media_build_experimental/v4l/compat.h:1552:0: warning: "DMA_ATTR_SKIP_CPU_SYNC" redefined #define DMA_ATTR_SKIP_CPU_SYNC 0 In file included from ./include/linux/pci-dma-compat.h:7:0, from ./include/linux/pci.h:2145, from /home/htpc/Downloads/media_build_experimental/v4l/compat.h:1459, from <command-line>:0: ./include/linux/dma-mapping.h:47:0: note: this is the location of the previous definition #define DMA_ATTR_SKIP_CPU_SYNC (1UL << 5) scripts/Makefile.build:299: recipe for target '/home/htpc/Downloads/media_build_experimental/v4l/tuner-xc2028.o' failed make[3]: *** [/home/htpc/Downloads/media_build_experimental/v4l/tuner-xc2028.o] Error 1 Makefile:1494: recipe for target '_module_/home/htpc/Downloads/media_build_experimental/v4l' failed make[2]: *** [_module_/home/htpc/Downloads/media_build_experimental/v4l] Error 2 make[2]: Leaving directory '/usr/src/kernels/4.9.7-201.fc25.x86_64' Makefile:51: recipe for target 'default' failed make[1]: *** [default] Error 2 make[1]: Leaving directory '/home/htpc/Downloads/media_build_experimental/v4l' Makefile:28: recipe for target 'all' failed make: *** [all] Error 2 Which I fix by commenting out lines 1462 up to 1468 in media_build_experimental/v4l/compat.h: //static inline void * //pci_zalloc_consistent(struct pci_dev *hwdev, size_t size, // dma_addr_t *dma_handle) //{ // return dma_alloc_coherent(hwdev == NULL ? NULL : &hwdev->dev, // size, dma_handle, GFP_ATOMIC | __GFP_ZERO); //} Now it compiles and works fine. I still get these warnings: media_build_experimental/v4l/compat.h:1552:0: warning: "DMA_ATTR_SKIP_CPU_SYNC" redefined #define DMA_ATTR_SKIP_CPU_SYNC 0 Which I can easily remove by commenting out the specific line as well. Now my questions are: - is this the correct way to fix these compile errors? (I'm definately not a professional developer) - what can I do to have this solved in the source? Besides that, I'm also wondering if these drivers have any change of getting into kernel mainline? Regards, Martin
