Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
soc: mediatek: mtk-dvfsrc: Change error check for DVFSRCv4 START cmd
In preparation for adding support for DVFSRC Version 4, change the
error check for the MTK_SIP_DVFSRC_START command in the probe
function to error out only if BIT(0) is set: this is still valid
for the previous DVFSRC versions, as those always set this bit in
a fail reply anyway.
Signed-off-by: Nicolas Frattaroli <nicolas.frattaroli@collabora.com>
Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
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drivers/soc/mediatek/mtk-dvfsrc.c
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-1
drivers/soc/mediatek/mtk-dvfsrc.c
···
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/* Everything is set up - make it run! */
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arm_smccc_smc(MTK_SIP_DVFSRC_VCOREFS_CONTROL, MTK_SIP_DVFSRC_START,
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0, 0, 0, 0, 0, 0, &ares);
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-
if (ares.a0)
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+
if (ares.a0 & BIT(0))
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return dev_err_probe(&pdev->dev, -EINVAL, "Cannot start DVFSRC: %lu\n", ares.a0);
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return 0;