From: Kuan-Wei Chiu <visitorckw@gmail.com>
To: Daniel Palmer <daniel@thingy.jp>
Cc: angelo@kernel-space.org, bmeng.cn@gmail.com, u-boot@lists.denx.de
Subject: Re: [PATCH v2 1/5] sysreset: qemu virt: Use __raw_writel()
Date: Tue, 7 Apr 2026 00:57:03 +0800 [thread overview]
Message-ID: <adPl33dlbOFxQifT@google.com> (raw)
In-Reply-To: <20260406142411.2992618-2-daniel@thingy.jp>
On Mon, Apr 06, 2026 at 11:24:07PM +0900, Daniel Palmer wrote:
> The virt ctrl register seems to be native endian, currently this driver
> uses writel(), which works by luck because its currently broken on m68k.
>
> Use __raw_writel() instead to avoid breaking this driver when the
> endianness of writel() is fixed.
>
> Signed-off-by: Daniel Palmer <daniel@thingy.jp>
Acked-by: Kuan-Wei Chiu <visitorckw@gmail.com>
Regards,
Kuan-Wei
> ---
> drivers/sysreset/sysreset_qemu_virt_ctrl.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/sysreset/sysreset_qemu_virt_ctrl.c b/drivers/sysreset/sysreset_qemu_virt_ctrl.c
> index e7cacc9b6e98..5ab16001922b 100644
> --- a/drivers/sysreset/sysreset_qemu_virt_ctrl.c
> +++ b/drivers/sysreset/sysreset_qemu_virt_ctrl.c
> @@ -38,7 +38,7 @@ static int qemu_virt_ctrl_request(struct udevice *dev, enum sysreset_t type)
> return -EPROTONOSUPPORT;
> }
>
> - writel(val, plat->reg + VIRT_CTRL_REG_CMD);
> + __raw_writel(val, plat->reg + VIRT_CTRL_REG_CMD);
>
> return -EINPROGRESS;
> }
> --
> 2.51.0
>
next prev parent reply other threads:[~2026-04-06 16:57 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-04-06 14:24 [PATCH v2 0/5] Add virtio-mmio support to m68k virt machine Daniel Palmer
2026-04-06 14:24 ` [PATCH v2 1/5] sysreset: qemu virt: Use __raw_writel() Daniel Palmer
2026-04-06 16:57 ` Kuan-Wei Chiu [this message]
2026-04-08 12:15 ` Angelo Dureghello
2026-04-06 14:24 ` [PATCH v2 2/5] m68k: Fix writew(), writel(), readw(), readl() endianness Daniel Palmer
2026-04-06 17:15 ` Kuan-Wei Chiu
2026-04-07 0:58 ` Daniel Palmer
2026-04-08 12:12 ` Angelo Dureghello
2026-04-08 12:49 ` Daniel Palmer
2026-04-08 13:26 ` Angelo Dureghello
2026-04-08 13:40 ` Daniel Palmer
2026-04-08 14:18 ` Angelo Dureghello
2026-04-06 14:24 ` [PATCH v2 3/5] virtio: mmio: Keep vendor id little endian Daniel Palmer
2026-04-06 16:54 ` Kuan-Wei Chiu
2026-04-07 1:00 ` Daniel Palmer
2026-04-07 8:20 ` Daniel Palmer
2026-04-06 14:24 ` [PATCH v2 4/5] virtio: mmio: Allow instantiation via platform data Daniel Palmer
2026-04-08 1:47 ` Kuan-Wei Chiu
2026-04-08 9:39 ` Daniel Palmer
2026-04-06 14:24 ` [PATCH v2 5/5] board: qemu: m68k: Create virtio mmio instances Daniel Palmer
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