Heiko Stübner a5e1baf7dc clk: rockchip: fix deadlock possibility in cpuclk ...

Lockdep reported a possible deadlock between the cpuclk lock and for example
the i2c driver.

       CPU0                    CPU1
       ----                    ----
  lock(clk_lock);
                               local_irq_disable();
                               lock(&(&i2c->lock)->rlock);
                               lock(clk_lock);
  <Interrupt>
    lock(&(&i2c->lock)->rlock);

 *** DEADLOCK ***

The generic clock-types of the core ccf already use spin_lock_irqsave when
touching clock registers, so do the same for the cpuclk.

Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Reviewed-by: Doug Anderson <dianders@chromium.org>
Signed-off-by: Michael Turquette <mturquette@linaro.org>
[mturquette@linaro.org: removed initialization of "flags"]

2015-01-17 11:22:39 -08:00

..

clk-cpu.c

clk: rockchip: fix deadlock possibility in cpuclk

2015-01-17 11:22:39 -08:00

clk-mmc-phase.c

clk: rockchip: Add support for the mmc clock phases using the framework

2014-11-28 00:44:24 +01:00

clk-pll.c

clk: rockchip: add optional sync to pll rate parameters

2014-11-25 09:57:18 +01:00

clk-rk3188.c

clk: rockchip: fix rk3066 pll lock bit location

2014-12-28 23:30:08 +01:00

clk-rk3288.c

clk: rockchip: fix rk3288 cpuclk core dividers

2014-12-28 23:31:44 +01:00

clk-rockchip.c

clk: rockchip: fix function type for CLK_OF_DECLARE

2014-05-20 14:25:22 -05:00

clk.c

Merge tag 'v3.19-rockchip-clk2' of git://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip into clk-next

2014-11-28 21:00:16 -08:00

clk.h

clk: rockchip: Add support for the mmc clock phases using the framework

2014-11-28 00:44:24 +01:00

Makefile

clk: rockchip: Add support for the mmc clock phases using the framework

2014-11-28 00:44:24 +01:00

softrst.c

clk: rockchip: add reset controller

2014-07-13 12:17:07 -07:00