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Following error is seen during multiple unload/load of driver, Error creating socket tegra210-adsp: probe of tegra210-adsp failed with error -1 This is resulting in kernel panic and device reboot. Following is the crash, =============================================================================== Unable to handle kernel NULL pointer dereference at virtual address 00000010 Mem abort info: ESR = 0x96000005 Exception class = DABT (current EL), IL = 32 bits SET = 0, FnV = 0 EA = 0, S1PTW = 0 Data abort info: ISV = 0, ISS = 0x00000005 CM = 0, WnR = 0 user pgtable: 4k pages, 39-bit VAs, pgd = ffffffc3e5a09000 [0000000000000010] *pgd=0000000000000000, *pud=0000000000000000 Internal error: Oops: 96000005 [#1] PREEMPT SMP PC is at soc_probe_component+0x90/0x350 LR is at soc_probe_component+0x34/0x350 pc : [<ffffff8008d59fb0>] lr : [<ffffff8008d59f54>] pstate: 40400045 sp : ffffffc38bbab8c0 x29: ffffffc38bbab8c0 x28: 0000000000000000 x27: 0000000000000000 x26: ffffff80018f19b8 x25: ffffffc3e5acf800 x24: ffffffc3e8b44e00 x23: 00000000000000f8 x22: 0000000000000001 x21: ffffff80018f19b8 x20: ffffff800a067000 x19: ffffffc35b93aa50 x18: 000000003e48590c x17: 00000022d6c5fcd0 x16: ffffff8008153de0 x15: 0000000300000000 x14: 0000000000000000 x13: 0000000000000003 x12: 0000000000000026 x11: 0000000000000005 x10: 0101010101010101 x9 : 0000000000000000 x8 : 7f7f7f7f7f7f7f7f x7 : 2f30316071666473 x6 : 070b035f125d521d x5 : 1d525d125f030b07 x4 : 0000000000000000 x3 : 6dcc85ae6dec65a0 x2 : 000000000000008c x1 : ffffff80094aa810 x0 : 0000000000000000 Process insmod (pid: 5755, stack limit = 0xffffffc38bba8028) Call trace: [<ffffff8008d59fb0>] soc_probe_component+0x90/0x350 [<ffffff8008d5afc8>] snd_soc_instantiate_card+0x4d8/0xb58 [<ffffff8008d5b7a4>] snd_soc_register_card+0x15c/0x200 [<ffffff80018ed630>] tegra_machine_driver_probe+0x3d0/0x5a0 [<ffffff80087c3da0>] platform_drv_probe+0x60/0xc8 [<ffffff80087c1278>] driver_probe_device+0xd0/0x410 [<ffffff80087c16dc>] __driver_attach+0x124/0x128 [<ffffff80087beba8>] bus_for_each_dev+0x88/0xe8 [<ffffff80087c0a68>] driver_attach+0x30/0x40 [<ffffff80087c0438>] bus_add_driver+0x1f8/0x2b0 [<ffffff80087c2648>] driver_register+0x68/0x100 [<ffffff80087c3ce4>] __platform_driver_register+0x5c/0x68 [<ffffff8001276018>] tegra_asoc_machine_driver_init+0x18/0x30 [<ffffff80080832ac>] do_one_initcall+0x5c/0x170 [<ffffff80081ba740>] do_init_module+0x68/0x1b8 [<ffffff80081538dc>] load_module+0x1004/0x1320 [<ffffff8008153ef0>] SyS_finit_module+0x110/0x128 [<ffffff8008083040>] el0_svc_naked+0x34/0x38 ---[ end trace 39fa2dd2a3c341ef ]--- =============================================================================== Fix info, This patch releases the socket in device removal and adsp probe succeeds Thus avoid above crash during sound card registration. Bug 200453666 Change-Id: Idb113b9aca71f830cd33cd8f9c3d742ad86280bb Signed-off-by: spujar <spujar@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/1847927 Reviewed-by: Ravindra Lokhande <rlokhande@nvidia.com> Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com> GVS: Gerrit_Virtual_Submit Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>