1. 24 Aug, 2017 1 commit
    • Masaki Ota's avatar
      Input: ALPS - fix two-finger scroll breakage in right side on ALPS touchpad · 4a646580
      Masaki Ota authored
      Fixed the issue that two finger scroll does not work correctly
      on V8 protocol. The cause is that V8 protocol X-coordinate decode
      is wrong at SS4 PLUS device. I added SS4 PLUS X decode definition.
      
      Mote notes:
      the problem manifests itself by the commit e7348396 ("Input: ALPS
      - fix V8+ protocol handling (73 03 28)"), where a fix for the V8+
      protocol was applied.  Although the culprit must have been present
      beforehand, the two-finger scroll worked casually even with the
      wrongly reported values by some reason.  It got broken by the commit
      above just because it changed x_max value, and this made libinput
      correctly figuring the MT events.  Since the X coord is reported as
      falsely doubled, the events on the right-half side go outside the
      boundary, thus they are no longer handled.  This resulted as a broken
      two-finger scroll.
      
      One finger event is decoded differently, and it didn't suffer from
      this problem.  The problem was only about MT events. --tiwai
      
      Fixes: e7348396 ("Input: ALPS - fix V8+ protocol handling (73 03 28)")
      Signed-off-by: default avatarMasaki Ota <masaki.ota@jp.alps.com>
      Tested-by: default avatarTakashi Iwai <tiwai@suse.de>
      Tested-by: default avatarPaul Donohue <linux-kernel@PaulSD.com>
      Cc: <stable@vger.kernel.org>
      Signed-off-by: default avatarTakashi Iwai <tiwai@suse.de>
      Signed-off-by: default avatarDmitry Torokhov <dmitry.torokhov@gmail.com>
      4a646580
  2. 20 Aug, 2017 1 commit
  3. 19 Aug, 2017 2 commits
  4. 15 Aug, 2017 2 commits
  5. 19 Jul, 2017 1 commit
  6. 12 Jul, 2017 2 commits
    • Dmitry Torokhov's avatar
      Merge branch 'next' into for-linus · dda5202b
      Dmitry Torokhov authored
      Prepare second round of input updates for 4.13 merge window.
      dda5202b
    • Chen Hong's avatar
      Input: i8042 - fix crash at boot time · 340d394a
      Chen Hong authored
      The driver checks port->exists twice in i8042_interrupt(), first when
      trying to assign temporary "serio" variable, and second time when deciding
      whether it should call serio_interrupt(). The value of port->exists may
      change between the 2 checks, and we may end up calling serio_interrupt()
      with a NULL pointer:
      
      BUG: unable to handle kernel NULL pointer dereference at 0000000000000050
      IP: [<ffffffff8150feaf>] _spin_lock_irqsave+0x1f/0x40
      PGD 0
      Oops: 0002 [#1] SMP
      last sysfs file:
      CPU 0
      Modules linked in:
      
      Pid: 1, comm: swapper Not tainted 2.6.32-358.el6.x86_64 #1 QEMU Standard PC (i440FX + PIIX, 1996)
      RIP: 0010:[<ffffffff8150feaf>]  [<ffffffff8150feaf>] _spin_lock_irqsave+0x1f/0x40
      RSP: 0018:ffff880028203cc0  EFLAGS: 00010082
      RAX: 0000000000010000 RBX: 0000000000000000 RCX: 0000000000000000
      RDX: 0000000000000282 RSI: 0000000000000098 RDI: 0000000000000050
      RBP: ffff880028203cc0 R08: ffff88013e79c000 R09: ffff880028203ee0
      R10: 0000000000000298 R11: 0000000000000282 R12: 0000000000000050
      R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000098
      FS:  0000000000000000(0000) GS:ffff880028200000(0000) knlGS:0000000000000000
      CS:  0010 DS: 0018 ES: 0018 CR0: 000000008005003b
      CR2: 0000000000000050 CR3: 0000000001a85000 CR4: 00000000001407f0
      DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
      DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
      Process swapper (pid: 1, threadinfo ffff88013e79c000, task ffff88013e79b500)
      Stack:
      ffff880028203d00 ffffffff813de186 ffffffffffffff02 0000000000000000
      <d> 0000000000000000 0000000000000000 0000000000000000 0000000000000098
      <d> ffff880028203d70 ffffffff813e0162 ffff880028203d20 ffffffff8103b8ac
      Call Trace:
      <IRQ>
       [<ffffffff813de186>] serio_interrupt+0x36/0xa0
      [<ffffffff813e0162>] i8042_interrupt+0x132/0x3a0
      [<ffffffff8103b8ac>] ? kvm_clock_read+0x1c/0x20
      [<ffffffff8103b8b9>] ? kvm_clock_get_cycles+0x9/0x10
      [<ffffffff810e1640>] handle_IRQ_event+0x60/0x170
      [<ffffffff8103b154>] ? kvm_guest_apic_eoi_write+0x44/0x50
      [<ffffffff810e3d8e>] handle_edge_irq+0xde/0x180
      [<ffffffff8100de89>] handle_irq+0x49/0xa0
      [<ffffffff81516c8c>] do_IRQ+0x6c/0xf0
      [<ffffffff8100b9d3>] ret_from_intr+0x0/0x11
      [<ffffffff81076f63>] ? __do_softirq+0x73/0x1e0
      [<ffffffff8109b75b>] ? hrtimer_interrupt+0x14b/0x260
      [<ffffffff8100c1cc>] ? call_softirq+0x1c/0x30
      [<ffffffff8100de05>] ? do_softirq+0x65/0xa0
      [<ffffffff81076d95>] ? irq_exit+0x85/0x90
      [<ffffffff81516d80>] ? smp_apic_timer_interrupt+0x70/0x9b
      [<ffffffff8100bb93>] ? apic_timer_interrupt+0x13/0x20
      
      To avoid the issue let's change the second check to test whether serio is
      NULL or not.
      
      Also, let's take i8042_lock in i8042_start() and i8042_stop() instead of
      trying to be overly smart and using memory barriers.
      Signed-off-by: default avatarChen Hong <chenhong3@huawei.com>
      [dtor: take lock in i8042_start()/i8042_stop()]
      Cc: stable@vger.kernel.org
      Signed-off-by: default avatarDmitry Torokhov <dmitry.torokhov@gmail.com>
      340d394a
  7. 09 Jul, 2017 2 commits
  8. 06 Jul, 2017 1 commit
  9. 02 Jul, 2017 2 commits
  10. 23 Jun, 2017 1 commit
  11. 20 Jun, 2017 1 commit
  12. 18 Jun, 2017 3 commits
  13. 09 Jun, 2017 3 commits
  14. 07 Jun, 2017 1 commit
  15. 05 Jun, 2017 2 commits
  16. 03 Jun, 2017 5 commits
  17. 02 Jun, 2017 2 commits
  18. 30 May, 2017 8 commits