media: staging: media: atomisp: Fix oops by unbalanced clk enable/disable call
The common-clk core expects clk consumers to always call enable/disable
in a balanced manner. The atomisp driver does not call gmin_flisclk_ctrl()
in a balanced manner, so add a clock_on bool and skip redundant calls.
This fixes kernel oops like this one:
[ 19.811613] gc0310_s_config S
[ 19.811655] ------------[ cut here ]------------
[ 19.811664] WARNING: CPU: 1 PID: 720 at drivers/clk/clk.c:594 clk_core_disabl
[ 19.811666] Modules linked in: tpm_crb(+) snd_soc_sst_atom_hifi2_platform tpm
[ 19.811744] CPU: 1 PID: 720 Comm: systemd-udevd Tainted: G C OE 4.1
[ 19.811746] Hardware name: Insyde T701/T701, BIOS BYT70A.YNCHENG.WIN.007 08/2
[ 19.811749] task:
ffff988df7ab2500 task.stack:
ffffac1400474000
[ 19.811752] RIP: 0010:clk_core_disable+0xc0/0x130
...
[ 19.811775] Call Trace:
[ 19.811783] clk_core_disable_lock+0x1f/0x30
[ 19.811788] clk_disable+0x1f/0x30
[ 19.811794] gmin_flisclk_ctrl+0x87/0xf0
[ 19.811801] 0xffffffffc0528512
[ 19.811805] 0xffffffffc05295e2
[ 19.811811] ? acpi_device_wakeup_disable+0x50/0x60
[ 19.811815] ? acpi_dev_pm_attach+0x8e/0xd0
[ 19.811818] ? 0xffffffffc05294d0
[ 19.811823] i2c_device_probe+0x1cd/0x280
[ 19.811828] driver_probe_device+0x2ff/0x450
Fixes: "staging: atomisp: use clock framework for camera clocks"
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
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