On Wed, Apr 17, 2019 at 01:59:34AM +0000, Anson Huang wrote: > 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) Applied to for-current, thanks!
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