Unknown pixelformat 0x2058554d

[metacomgd]

the Unknown pixelformat 0x2058554d error and resulting trace (below) seems to be caused by an endianness problem. 0x20 = " " 0x58 = "X" 0x55 ="U" 0x4d = "M"

I think the relevant part in the patch is this:
+/* definition for MUX format /
+#ifndef V4L2_PIX_FMT_MUX
+#define V4L2_PIX_FMT_MUX v4l2_fourcc('M', 'U', 'X', ' ') / MUX stream */
+#endif
+
I believe changing to v4l2_fourcc('M', 'U', 'X', ' ') to v4l2_fourcc_be('M', 'U', 'X', ' ') will solve it

(look at Linux/include/uapi/linux/videodev2.h ~ line 80 to see the def)

92.670342] ------------[ cut here ]------------ [ 92.670408] WARNING: CPU: 0 PID: 1996 at drivers/media/v4l2-core/v4l2-ioctl.c:1272 v4l_enum_fmt+0x10e0/0x1474() [ 92.670417] Unknown pixelformat 0x2058554d [ 92.670424] Modules linked in: snd_usb_audio snd_hwdep snd_usbmidi_lib snd_rawmidi snd_seq_device uvcvideo(O) videobuf2_vmalloc videobuf2_mem ops videobuf2_v4l2 videobuf2_core snd_soc_hdmi_codec spidev snd_soc_simple_card omap_aes_driver omap_sham omap_rng rng_core tilcdc snd_soc_davin ci_mcasp snd_soc_edma snd_soc_omap snd_soc_core snd_pcm_dmaengine snd_pcm snd_timer snd spi_omap2_mcspi soundcore evdev tda998x uio_pdrv_genirq uio 8021q garp mrp stp llc usb_f_acm u_serial usb_f_rndis u_ether bnep libcomposite bluetooth rfkill dummy [ 92.670577] CPU: 0 PID: 1996 Comm: v4l2-ctl Tainted: G O 4.4.30-ti-r65 #1 [ 92.670584] Hardware name: Generic AM33XX (Flattened Device Tree) [ 92.670625] [<c001acb8>] (unwind_backtrace) from [<c0015a14>] (show_stack+0x20/0x24) [ 92.670651] [<c0015a14>] (show_stack) from [<c05b9ab8>] (dump_stack+0x9c/0xb0) [ 92.670672] [<c05b9ab8>] (dump_stack) from [<c0042e24>] (warn_slowpath_common+0x98/0xc8) [ 92.670686] [<c0042e24>] (warn_slowpath_common) from [<c0042ea4>] (warn_slowpath_fmt+0x50/0x6c) [ 92.670701] [<c0042ea4>] (warn_slowpath_fmt) from [<c08334f8>] (v4l_enum_fmt+0x10e0/0x1474) [ 92.670718] [<c08334f8>] (v4l_enum_fmt) from [<c0834254>] (__video_do_ioctl+0x2c4/0x33c) [ 92.670731] [<c0834254>] (__video_do_ioctl) from [<c0833a34>] (video_usercopy+0x1a8/0x6e0) [ 92.670744] [<c0833a34>] (video_usercopy) from [<c0833f8c>] (video_ioctl2+0x20/0x24) [ 92.670758] [<c0833f8c>] (video_ioctl2) from [<c082e91c>] (v4l2_ioctl+0xb8/0xe8) [ 92.670777] [<c082e91c>] (v4l2_ioctl) from [<c01d6544>] (do_vfs_ioctl+0x4dc/0x714) [ 92.670792] [<c01d6544>] (do_vfs_ioctl) from [<c01d67f8>] (SyS_ioctl+0x7c/0x8c) [ 92.670812] [<c01d67f8>] (SyS_ioctl) from [<c0010e60>] (ret_fast_syscall+0x0/0x44) [ 92.670822] ---[ end trace b1958b0870bd25c2 ]---