Hi Greg,
Thanks for feedback.
Subject: FAILED: patch "[PATCH] serial: 8250_em: Fix UART port type" failed to apply to 5.4-stable tree
The patch below does not apply to the 5.4-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to stable@vger.kernel.org.
To reproduce the conflict and resubmit, you may use the following commands:
git fetch https://jpn01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgit.kernel .org%2Fpub%2Fscm%2Flinux%2Fkernel%2Fgit%2Fstable%2Flinux.git%2F&data=05%7C01 %7Cbiju.das.jz%40bp.renesas.com%7C05314cf919e7472983e208db29233b43%7C53d8257 1da1947e49cb4625a166a4a2a%7C0%7C0%7C638149003512485403%7CUnknown%7CTWFpbGZsb 3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000 %7C%7C%7C&sdata=eLxnB6PHZsrF3%2BUbZ4r90nz5se5HFps6MGCXbzNpudk%3D&reserved=0 linux-5.4.y git checkout FETCH_HEAD git cherry-pick -x 32e293be736b853f168cd065d9cbc1b0c69f545d # <resolve conflicts, build, test, etc.> git commit -s git send-email --to 'stable@vger.kernel.org' --in-reply-to '167930353815674@kroah.com' -- subject-prefix 'PATCH 5.4.y' HEAD^..
Possible dependencies:
32e293be736b ("serial: 8250_em: Fix UART port type") 2a1dbd259e63 ("serial: 8250_em: Switch to use platform_get_irq()")
OK, will send these fixes to 5.4 and similarly for 4.19 and 4.14.
Cheers, Biju
------------------ original commit in Linus's tree ------------------
From 32e293be736b853f168cd065d9cbc1b0c69f545d Mon Sep 17 00:00:00 2001 From: Biju Das biju.das.jz@bp.renesas.com Date: Mon, 27 Feb 2023 11:41:46 +0000 Subject: [PATCH] serial: 8250_em: Fix UART port type
As per HW manual for EMEV2 "R19UH0040EJ0400 Rev.4.00", the UART IP found on EMMA mobile SoC is Register-compatible with the general-purpose 16750 UART chip. Fix UART port type as 16750 and enable 64-bytes fifo support.
Fixes: 22886ee96895 ("serial8250-em: Emma Mobile UART driver V2") Cc: stable@vger.kernel.org Signed-off-by: Biju Das biju.das.jz@bp.renesas.com Link: Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
diff --git a/drivers/tty/serial/8250/8250_em.c b/drivers/tty/serial/8250/8250_em.c index f8e99995eee9..d94c3811a8f7 100644 --- a/drivers/tty/serial/8250/8250_em.c +++ b/drivers/tty/serial/8250/8250_em.c @@ -106,8 +106,8 @@ static int serial8250_em_probe(struct platform_device *pdev) memset(&up, 0, sizeof(up)); up.port.mapbase = regs->start; up.port.irq = irq;
- up.port.type = PORT_UNKNOWN;
- up.port.flags = UPF_BOOT_AUTOCONF | UPF_FIXED_PORT | UPF_IOREMAP;
- up.port.type = PORT_16750;
- up.port.flags = UPF_FIXED_PORT | UPF_IOREMAP | UPF_FIXED_TYPE; up.port.dev = &pdev->dev; up.port.private_data = priv;