09 Sep, 2016

16 commits


07 Sep, 2016

15 commits


06 Sep, 2016

9 commits

  • The clock framework is generally so well supported that there's no reason
    to keep this one around.

    Signed-off-by: Sakari Ailus
    Reviewed-by: Sebastian Reichel
    Signed-off-by: Mauro Carvalho Chehab

    Sakari Ailus
     
  • Switch from the old gpio API to the new descriptor based gpiod API.

    Signed-off-by: Sakari Ailus
    Reviewed-by: Sebastian Reichel
    Signed-off-by: Mauro Carvalho Chehab

    Sakari Ailus
     
  • The data may now be const as well.

    Signed-off-by: Sakari Ailus
    Reviewed-by: Sebastian Reichel
    Signed-off-by: Mauro Carvalho Chehab

    Sakari Ailus
     
  • The clock may be provided by a driver which is yet to probe. Print the
    actual error code as well.

    Signed-off-by: Sakari Ailus
    Reviewed-by: Sebastian Reichel
    Signed-off-by: Mauro Carvalho Chehab

    Sakari Ailus
     
  • This is really configuration to the driver originating from DT or
    elsewhere. Do not call it platform data.

    Signed-off-by: Sakari Ailus
    Reviewed-by: Sebastian Reichel
    Signed-off-by: Mauro Carvalho Chehab

    Sakari Ailus
     
  • Unify enforced 8-bit read access with that based on actual need.

    Signed-off-by: Sakari Ailus
    Reviewed-by: Sebastian Reichel
    Signed-off-by: Mauro Carvalho Chehab

    Sakari Ailus
     
  • Without this patch, a bug is issued when the module is removed:

    [ 1417.425863] cx231xx 1-3.1.4:1.1: Cx231xx dvb Extension removed
    [ 1417.571923] BUG: unable to handle kernel paging request at ffffffffc081a024
    [ 1417.571962] IP: [] string+0x24/0x80
    [ 1417.571987] PGD 1c09067 PUD 1c0b067 PMD 88e653067 PTE 0
    [ 1417.572013] Oops: 0000 [#1] SMP
    [ 1417.572026] Modules linked in: mb86a20s dvb_core cx231xx_alsa ir_kbd_i2c(-) tda18271 tea5767 tuner cx25840 cx231xx i2c_mux videobuf_vmalloc tveeprom cx2341x videobuf_core rc_core v4l2_common videodev media bnep usblp fuse xt_CHECKSUM iptable_mangle tun ebtable_filter ebtables ip6table_filter ip6_tables xt_physdev br_netfilter bridge nf_log_ipv4 nf_log_common xt_LOG xt_conntrack ipt_MASQUERADE nf_nat_masquerade_ipv4 iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack cpufreq_stats vfat fat snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic intel_rapl x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel snd_hda_intel snd_hda_codec kvm snd_hda_core snd_hwdep snd_seq snd_seq_device snd_pcm irqbypass crct10dif_pclmul iTCO_wdt crc32_pclmul nfsd hci_uart iTCO_vendor_support
    [ 1417.572317] snd_timer ghash_clmulni_intel btbcm intel_cstate btqca snd intel_uncore btintel intel_rapl_perf mei_me bluetooth mei shpchp soundcore pcspkr i2c_i801 auth_rpcgss wmi acpi_als kfifo_buf nfs_acl industrialio rfkill lockd pinctrl_sunrisepoint pinctrl_intel tpm_tis tpm intel_lpss_acpi intel_lpss acpi_pad grace sunrpc binfmt_misc hid_logitech_hidpp hid_logitech_dj 8021q garp stp llc mrp i915 i2c_algo_bit drm_kms_helper drm e1000e sdhci_pci sdhci mmc_core crc32c_intel ptp pps_core video i2c_hid fjes analog gameport joydev [last unloaded: rc_pixelview_002t]
    [ 1417.572487] CPU: 4 PID: 24493 Comm: rmmod Tainted: G W 4.7.0+ #2
    [ 1417.572504] Hardware name: /NUC6i7KYB, BIOS KYSKLi70.86A.0041.2016.0817.1130 08/17/2016
    [ 1417.572526] task: ffff880894b81e80 ti: ffff880896bdc000 task.ti: ffff880896bdc000
    [ 1417.572544] RIP: 0010:[] [] string+0x24/0x80
    [ 1417.572564] RSP: 0018:ffff880896bdfbe8 EFLAGS: 00010286
    [ 1417.572577] RAX: ffffffffc081a025 RBX: ffff8808935aa15c RCX: ffff0a00ffffff04
    [ 1417.572594] RDX: ffffffffc081a024 RSI: ffffffffffffffff RDI: ffff8808935aa15c
    [ 1417.572610] RBP: ffff880896bdfbe8 R08: fffffffffffffffe R09: ffff8808935aa91c
    [ 1417.572628] R10: ffffffffc07b85d6 R11: 0000000000000000 R12: ffff8808935aa91c
    [ 1417.572644] R13: 00000000000007c5 R14: ffffffffc07b85dd R15: ffffffffc07b85dd
    [ 1417.572662] FS: 00007f5a5392d700(0000) GS:ffff8808bed00000(0000) knlGS:0000000000000000
    [ 1417.572681] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
    [ 1417.572705] CR2: ffffffffc081a024 CR3: 0000000897188000 CR4: 00000000003406e0
    [ 1417.572735] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
    [ 1417.572761] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
    [ 1417.572778] Stack:
    [ 1417.572785] ffff880896bdfc48 ffffffff813dcf77 0000000000000005 ffff8808935aa157
    [ 1417.572806] ffff880896bdfc58 ffff0a00ffffff04 000000009d27375e ffff8808935aa000
    [ 1417.572829] 0000000000000800 ffff880896182800 0000000000000000 ffff88089e898ae0
    [ 1417.572850] Call Trace:
    [ 1417.572860] [] vsnprintf+0x2d7/0x500
    [ 1417.572873] [] add_uevent_var+0x82/0x120
    [ 1417.572890] [] rc_dev_uevent+0x2d/0x60 [rc_core]
    [ 1417.572907] [] dev_uevent+0xd9/0x2d0
    [ 1417.572921] [] kobject_uevent_env+0x2d9/0x4f0
    [ 1417.572938] [] kobject_uevent+0xb/0x10
    [ 1417.572954] [] device_del+0x18f/0x260
    [ 1417.572974] [] ? kobject_put+0x27/0x50
    [ 1417.572998] [] rc_unregister_device+0x75/0xb0 [rc_core]
    [ 1417.573028] [] ir_remove+0x23/0x30 [ir_kbd_i2c]
    [ 1417.573055] [] i2c_device_remove+0x58/0xb0
    [ 1417.573078] [] __device_release_driver+0xa1/0x160
    [ 1417.573102] [] driver_detach+0xa6/0xb0
    [ 1417.573122] [] bus_remove_driver+0x55/0xd0
    [ 1417.573146] [] driver_unregister+0x2c/0x50
    [ 1417.573168] [] i2c_del_driver+0x22/0x50
    [ 1417.573194] [] ir_kbd_driver_exit+0x10/0x46c [ir_kbd_i2c]
    [ 1417.573227] [] SyS_delete_module+0x1b8/0x220
    [ 1417.573254] [] entry_SYSCALL_64_fastpath+0x1a/0xa4
    [ 1417.573279] Code: eb e9 76 ff ff ff 90 55 49 89 f1 48 89 ce 48 c1 fe 30 48 81 fa ff 0f 00 00 48 89 e5 4c 8d 46 ff 76 40 48 85 f6 74 4e 48 8d 42 01 b6 12 84 d2 74 43 49 01 c0 31 f6 eb 0c 48 83 c0 01 0f b6 50
    [ 1417.573437] RIP [] string+0x24/0x80
    [ 1417.573455] RSP
    [ 1417.573465] CR2: ffffffffc081a024
    [ 1417.580053] ---[ end trace 4ca9e2eced326a62 ]---

    Signed-off-by: Mauro Carvalho Chehab

    Mauro Carvalho Chehab
     
  • The driver should not ignore errors while registering the I2C
    bus, as this device can't even minimally work without the buses,
    as it uses those buses internally to talk with the several IP
    blocks inside the chip.

    Cc: stable@vger.kernel.org
    Signed-off-by: Mauro Carvalho Chehab

    Mauro Carvalho Chehab
     
  • The cx231xx_get_i2c_adap() function should return the I2C
    adapter that will be used to talk with a device. It should never
    be NULL, as otherwise the driver will try to dereference a
    null pointer.

    We might instead fix the callers, but if this condition
    ever happens, it is really a driver bug, because i2c_port
    should always be a value from enum CX231XX_I2C_MASTER_PORT.

    Found when checking the code due to this bug:

    [ 39.769021] BUG: unable to handle kernel NULL pointer dereference at 0000000000000002
    [ 39.769105] IP: [] i2c_master_send+0x13/0x70

    Signed-off-by: Mauro Carvalho Chehab

    Mauro Carvalho Chehab