• Lubomir Rintel's avatar
    pxa168fb: prepare the clock · d85536cd
    Lubomir Rintel authored
    Add missing prepare/unprepare operations for fbi->clk,
    this fixes following kernel warning:
    
      ------------[ cut here ]------------
      WARNING: CPU: 0 PID: 1 at drivers/clk/clk.c:874 clk_core_enable+0x2c/0x1b0
      Enabling unprepared disp0_clk
      Modules linked in:
      CPU: 0 PID: 1 Comm: swapper Not tainted 4.18.0-rc8-00032-g02b43ddd4f21-dirty #25
      Hardware name: Marvell MMP2 (Device Tree Support)
      [<c010f7cc>] (unwind_backtrace) from [<c010cc6c>] (show_stack+0x10/0x14)
      [<c010cc6c>] (show_stack) from [<c011dab4>] (__warn+0xd8/0xf0)
      [<c011dab4>] (__warn) from [<c011db10>] (warn_slowpath_fmt+0x44/0x6c)
      [<c011db10>] (warn_slowpath_fmt) from [<c043898c>] (clk_core_enable+0x2c/0x1b0)
      [<c043898c>] (clk_core_enable) from [<c0439ec8>] (clk_core_enable_lock+0x18/0x2c)
      [<c0439ec8>] (clk_core_enable_lock) from [<c0436698>] (pxa168fb_probe+0x464/0x6ac)
      [<c0436698>] (pxa168fb_probe) from [<c04779a0>] (platform_drv_probe+0x48/0x94)
      [<c04779a0>] (platform_drv_probe) from [<c0475bec>] (driver_probe_device+0x328/0x470)
      [<c0475bec>] (driver_probe_device) from [<c0475de4>] (__driver_attach+0xb0/0x124)
      [<c0475de4>] (__driver_attach) from [<c0473c38>] (bus_for_each_dev+0x64/0xa0)
      [<c0473c38>] (bus_for_each_dev) from [<c0474ee0>] (bus_add_driver+0x1b8/0x230)
      [<c0474ee0>] (bus_add_driver) from [<c0476a20>] (driver_register+0xac/0xf0)
      [<c0476a20>] (driver_register) from [<c0102dd4>] (do_one_initcall+0xb8/0x1f0)
      [<c0102dd4>] (do_one_initcall) from [<c0b010a0>] (kernel_init_freeable+0x294/0x2e0)
      [<c0b010a0>] (kernel_init_freeable) from [<c07e9eb8>] (kernel_init+0x8/0x10c)
      [<c07e9eb8>] (kernel_init) from [<c01010e8>] (ret_from_fork+0x14/0x2c)
      Exception stack(0xd008bfb0 to 0xd008bff8)
      bfa0:                                     00000000 00000000 00000000 00000000
      bfc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
      bfe0: 00000000 00000000 00000000 00000000 00000013 00000000
      ---[ end trace c0af40f9e2ed7cb4 ]---
    Signed-off-by: default avatarLubomir Rintel <lkundrak@v3.sk>
    [b.zolnierkie: enhance patch description a bit]
    Signed-off-by: default avatarBartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
    d85536cd
pxa168fb.c 20.3 KB