Re: [PATCH RFT] phy: exynos-mipi-video: Use spin_lock to protct state->regmap rmw operations

From: Kishon Vijay Abraham I
Date: Wed Mar 04 2015 - 07:25:01 EST


Hi,

On Friday 27 February 2015 06:57 PM, Sylwester Nawrocki wrote:
On 27/02/15 04:50, Axel Lin wrote:
he state->regmap is initialized by devm_regmap_init_mmio().
So it's fine to use spin_lock rather than mutex to protct state->regmap rmw
operations.

Signed-off-by: Axel Lin <axel.lin@xxxxxxxxxx>
---
Hi Sylwester,
I don't have this hardware handy, so can you test if this patch works.
This patch is on top of my previous patch (phy: exynos-mipi-video: Fixup
the test for state->regmap)

Thanks for the patch, it looks good to me. I somehow missed the syscon
already uses a spinlock for regmap protection.

v4.0-rc1 seems devastated as far as exynos4 is concerned, it may take
some time until I get around and fix all the issues so I tested your
patch on v3.19. It all works well as expected.

Acked-by: Sylwester Nawrocki <s.nawrocki@xxxxxxxxxxx>
Tested-by: Sylwester Nawrocki <s.nawrocki@xxxxxxxxxxx>

This patch doesn't apply on 4.0-rc1. Can to refresh it to mainline
latest?

Cheers
Kishon
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