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drm/etnaviv: Simplify clock enable/disable

Browse source 
All the NULL checks are pointless, clk_*() routines already deal with NULL
just fine.

Signed-off-by: Lubomir Rintel <lkundrak@v3.sk>
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
This commit is contained in:
Lubomir Rintel 2020-06-16 23:21:27 +02:00 • committed by Lucas Stach
parent a59052d274
commit 6a5ef3b224
1 changed files with 19 additions and 34 deletions
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53
drivers/gpu/drm/etnaviv/etnaviv_gpu.c
View file

@ -1487,55 +1487,40 @@ static int etnaviv_gpu_clk_enable(struct etnaviv_gpu *gpu)
{
int ret;
if (gpu->clk_reg) {
ret = clk_prepare_enable(gpu->clk_reg);
if (ret)
return ret;
}
ret = clk_prepare_enable(gpu->clk_reg);
if (ret)
return ret;
if (gpu->clk_bus) {
ret = clk_prepare_enable(gpu->clk_bus);
if (ret)
goto disable_clk_reg;
}
ret = clk_prepare_enable(gpu->clk_bus);
if (ret)
goto disable_clk_reg;
if (gpu->clk_core) {
ret = clk_prepare_enable(gpu->clk_core);
if (ret)
goto disable_clk_bus;
}
ret = clk_prepare_enable(gpu->clk_core);
if (ret)
goto disable_clk_bus;
if (gpu->clk_shader) {
ret = clk_prepare_enable(gpu->clk_shader);
if (ret)
goto disable_clk_core;
}
ret = clk_prepare_enable(gpu->clk_shader);
if (ret)
goto disable_clk_core;
return 0;
disable_clk_core:
if (gpu->clk_core)
clk_disable_unprepare(gpu->clk_core);
clk_disable_unprepare(gpu->clk_core);
disable_clk_bus:
if (gpu->clk_bus)
clk_disable_unprepare(gpu->clk_bus);
clk_disable_unprepare(gpu->clk_bus);
disable_clk_reg:
if (gpu->clk_reg)
clk_disable_unprepare(gpu->clk_reg);
clk_disable_unprepare(gpu->clk_reg);
return ret;
}
static int etnaviv_gpu_clk_disable(struct etnaviv_gpu *gpu)
{
if (gpu->clk_shader)
clk_disable_unprepare(gpu->clk_shader);
if (gpu->clk_core)
clk_disable_unprepare(gpu->clk_core);
if (gpu->clk_bus)
clk_disable_unprepare(gpu->clk_bus);
if (gpu->clk_reg)
clk_disable_unprepare(gpu->clk_reg);
clk_disable_unprepare(gpu->clk_shader);
clk_disable_unprepare(gpu->clk_core);
clk_disable_unprepare(gpu->clk_bus);
clk_disable_unprepare(gpu->clk_reg);
return 0;
}