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arm64: zynqmp: Check return value in zynqmp_mmio_rawwrite()

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There should be return value check from zynqmp_mmio_read() in
zynqmp_mmio_rawwrite() to make sure that errors are propagated properly.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
This commit is contained in:
Michal Simek 2018-06-13 10:38:33 +02:00
parent 1e3e68f109
commit e3c26b8d95
1 changed files with 5 additions and 1 deletions
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6
arch/arm/cpu/armv8/zynqmp/cpu.c
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@ -212,8 +212,12 @@ static int zynqmp_mmio_rawwrite(const u32 address,
{
u32 data;
u32 value_local = value;
int ret;
ret = zynqmp_mmio_read(address, &data);
if (ret)
return ret;
zynqmp_mmio_read(address, &data);
data &= ~mask;
value_local &= mask;
value_local |= data;