clk: ti: clkctrl: Fix returning uninitialized data
authorTony Lindgren <tony@atomide.com>
Thu, 30 May 2019 06:55:57 +0000 (23:55 -0700)
committerStephen Boyd <sboyd@kernel.org>
Thu, 6 Jun 2019 18:19:46 +0000 (11:19 -0700)
commit41b3588dba6ef4b7995735a97e47ff0aeea6c276
tree311704dfdd06f2d895d175b7d74148e8c8438e47
parent1cc54078d104f5b4d7e9f8d55362efa5a8daffdb
clk: ti: clkctrl: Fix returning uninitialized data

If we do a clk_get() for a clock that does not exists, we have
_ti_omap4_clkctrl_xlate() return uninitialized data if no match
is found. This can be seen in some cases with SLAB_DEBUG enabled:

Unable to handle kernel paging request at virtual address 5a5a5a5a
...
clk_hw_create_clk.part.33
sysc_notifier_call
notifier_call_chain
blocking_notifier_call_chain
device_add

Let's fix this by setting a found flag only when we find a match.

Reported-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Fixes: 88a172526c32 ("clk: ti: add support for clkctrl clocks")
Signed-off-by: Tony Lindgren <tony@atomide.com>
Tested-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Tested-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
drivers/clk/ti/clkctrl.c