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Revert "sunxi: psci: avoid error address-of-packed-member"

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Using memcpy() for some MMIO access is generally frowned upon and might
break things on some platforms. Allwinner H3, which fails to boot, being
an example here.

Moreover, fields being accessed are naturally aligned and warnings
produced by GCC have been quiesced for some time already by:

53dc8ae ("gcc-9: silence 'address-of-packed-member' warning")

That said, it should be okay to revert this commit.

This reverts commit 9bd34a69a4.

Cc: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Tomasz Duszynski <tduszyns@gmail.com>
Acked-by: Jagan Teki <jagan@amarulasolutions.com>
This commit is contained in:
Tomasz Duszynski 2020-02-16 13:17:16 +01:00 • committed by Jagan Teki
parent a4df9d8ab8
commit 3586cb8227
1 changed files with 5 additions and 11 deletions
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16
arch/arm/cpu/armv7/sunxi/psci.c
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@ -75,7 +75,7 @@ static void __secure __mdelay(u32 ms)
isb();
}
static void __secure clamp_release(void __maybe_unused *clamp)
static void __secure clamp_release(u32 __maybe_unused *clamp)
{
#if defined(CONFIG_MACH_SUN6I) || defined(CONFIG_MACH_SUN7I) || \
defined(CONFIG_MACH_SUN8I_H3) || \
@ -90,7 +90,7 @@ static void __secure clamp_release(void __maybe_unused *clamp)
#endif
}
static void __secure clamp_set(void __maybe_unused *clamp)
static void __secure clamp_set(u32 __maybe_unused *clamp)
{
#if defined(CONFIG_MACH_SUN6I) || defined(CONFIG_MACH_SUN7I) || \
defined(CONFIG_MACH_SUN8I_H3) || \
@ -99,28 +99,22 @@ static void __secure clamp_set(void __maybe_unused *clamp)
#endif
}
static void __secure sunxi_power_switch(void *clamp, void *pwroff_ptr, bool on,
static void __secure sunxi_power_switch(u32 *clamp, u32 *pwroff, bool on,
int cpu)
{
u32 pwroff;
memcpy(&pwroff, pwroff_ptr, sizeof(u32));
if (on) {
/* Release power clamp */
clamp_release(clamp);
/* Clear power gating */
clrbits_le32(&pwroff, BIT(cpu));
clrbits_le32(pwroff, BIT(cpu));
} else {
/* Set power gating */
setbits_le32(&pwroff, BIT(cpu));
setbits_le32(pwroff, BIT(cpu));
/* Activate power clamp */
clamp_set(clamp);
}
memcpy(pwroff_ptr, &pwroff, sizeof(u32));
}
#ifdef CONFIG_MACH_SUN8I_R40