1. 02 May, 2019 4 commits
  2. 23 Apr, 2019 1 commit
    • Anson Huang's avatar
      i2c: imx: correct the method of getting private data in notifier_call · d386bb90
      Anson Huang authored
      The way of getting private imx_i2c_struct in i2c_imx_clk_notifier_call()
      is incorrect, should use clk_change_nb element to get correct address
      and avoid below kernel dump during POST_RATE_CHANGE notify by clk
      framework:
      
      Unable to handle kernel paging request at virtual address 03ef1488
      pgd = (ptrval)
      [03ef1488] *pgd=00000000
      Internal error: Oops: 5 [#1] PREEMPT SMP ARM
      Hardware name: Freescale i.MX6 Quad/DualLite (Device Tree)
      Workqueue: events reduce_bus_freq_handler
      PC is at i2c_imx_set_clk+0x10/0xb8
      LR is at i2c_imx_clk_notifier_call+0x20/0x28
      pc : [<806a893c>]    lr : [<806a8a04>]    psr: a0080013
      sp : bf399dd8  ip : bf3432ac  fp : bf7c1dc0
      r10: 00000002  r9 : 00000000  r8 : 00000000
      r7 : 03ef1480  r6 : bf399e50  r5 : ffffffff  r4 : 00000000
      r3 : bf025300  r2 : bf399e50  r1 : 00b71b00  r0 : bf399be8
      Flags: NzCv  IRQs on  FIQs on  Mode SVC_32  ISA ARM  Segment none
      Control: 10c5387d  Table: 4e03004a  DAC: 00000051
      Process kworker/2:1 (pid: 38, stack limit = 0x(ptrval))
      Stack: (0xbf399dd8 to 0xbf39a000)
      9dc0:                                                       806a89e4 00000000
      9de0: ffffffff bf399e50 00000002 806a8a04 806a89e4 80142900 ffffffff 00000000
      9e00: bf34ef18 bf34ef04 00000000 ffffffff bf399e50 80142d84 00000000 bf399e6c
      9e20: bf34ef00 80f214c4 bf025300 00000002 80f08d08 bf017480 00000000 80142df0
      9e40: 00000000 80166ed8 80c27638 8045de58 bf352340 03ef1480 00b71b00 0f82e242
      9e60: bf025300 00000002 03ef1480 80f60e5c 00000001 8045edf0 00000002 8045eb08
      9e80: bf025300 00000002 03ef1480 8045ee10 03ef1480 8045eb08 bf01be40 00000002
      9ea0: 03ef1480 8045ee10 07de2900 8045eb08 bf01b780 00000002 07de2900 8045ee10
      9ec0: 80c27898 bf399ee4 bf020a80 00000002 1f78a400 8045ee10 80f60e5c 80460514
      9ee0: 80f60e5c bf01b600 bf01b480 80460460 0f82e242 bf383a80 bf383a00 80f60e5c
      9f00: 00000000 bf7c1dc0 80f60e70 80460564 80f60df0 80f60d24 80f60df0 8011e72c
      9f20: 00000000 80f60df0 80f60e6c bf7c4f00 00000000 8011e7ac bf274000 8013bd84
      9f40: bf7c1dd8 80f03d00 bf274000 bf7c1dc0 bf274014 bf7c1dd8 80f03d00 bf398000
      9f60: 00000008 8013bfb4 00000000 bf25d100 bf25d0c0 00000000 bf274000 8013bf88
      9f80: bf25d11c bf0cfebc 00000000 8014140c bf25d0c0 801412ec 00000000 00000000
      9fa0: 00000000 00000000 00000000 801010e8 00000000 00000000 00000000 00000000
      9fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
      9fe0: 00000000 00000000 00000000 00000000 00000013 00000000 00000000 00000000
      [<806a893c>] (i2c_imx_set_clk) from [<806a8a04>] (i2c_imx_clk_notifier_call+0x20/0x28)
      [<806a8a04>] (i2c_imx_clk_notifier_call) from [<80142900>] (notifier_call_chain+0x44/0x84)
      [<80142900>] (notifier_call_chain) from [<80142d84>] (__srcu_notifier_call_chain+0x44/0x98)
      [<80142d84>] (__srcu_notifier_call_chain) from [<80142df0>] (srcu_notifier_call_chain+0x18/0x20)
      [<80142df0>] (srcu_notifier_call_chain) from [<8045de58>] (__clk_notify+0x78/0xa4)
      [<8045de58>] (__clk_notify) from [<8045edf0>] (__clk_recalc_rates+0x60/0xb4)
      [<8045edf0>] (__clk_recalc_rates) from [<8045ee10>] (__clk_recalc_rates+0x80/0xb4)
      Code: e92d40f8 e5903298 e59072a0 e1530001 (e5975008)
      ---[ end trace fc7f5514b97b6cbb ]---
      
      Fixes: 90ad2cbe ("i2c: imx: use clk notifier for rate changes")
      Signed-off-by: default avatarAnson Huang <Anson.Huang@nxp.com>
      Reviewed-by: default avatarDong Aisheng <aisheng.dong@nxp.com>
      Signed-off-by: default avatarWolfram Sang <wsa@the-dreams.de>
      Cc: stable@kernel.org
      d386bb90
  3. 21 Apr, 2019 1 commit
  4. 20 Apr, 2019 11 commits
  5. 19 Apr, 2019 23 commits